Preparation of electrolyzed oxidizing water by TiO2 doped IrO2-Ta2O5 electrode with high selectivity and stability for chlorine evolution
作者：
Deng, Li;Liu, Yi;Zhao, Gan;Chen, Jiahao;He, Shufan;...
期刊：
Journal of Electroanalytical Chemistry ,2019年832:459-466 ISSN：1572-6657
通讯作者：
Ren, Zhandong
作者机构：
[Deng, Li; He, Shufan; Zhu, Yuchan; Liu, Yi; Chai, Bo; Chen, Jiahao; Ren, Zhandong; Zhao, Gan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Ren, Zhandong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Chlorine;Cyclic voltammetry;Decomposition;Iridium compounds;Scanning electron microscopy;Sodium chloride;Tantalum oxides;Titanium dioxide;Viruses;Chlorine content;Chlorine evolution;Electrolyzed oxidizing water;Oxygen evolution reaction;Service lifetime;Electrochemical electrodes
摘要：
Electrolyzed oxidizing water (EO water) is a new disinfectant, which has been proved to possess the high bactericidal efficiency against a wide variety of microorganisms ranging from bacteria to viruses. EO water is generated by electrolysis of an extremely dilute NaCl solution. Therefore, it is necessary to enhance the selectivity of chlorine evolution reaction (CER), which the oxygen evolution side reaction (OER) needs to be minimized. In the present study, the TiO2 doped IrO2-Ta2O5 (IrO2-Ta2O5-TiO2) electrode was prepared by the thermal decomposition method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence (XRF) characterizations were employed to study the performances the IrO2-Ta2O5-TiO2 electrode. The electrochemical behaviors and actives of the IrO2-Ta2O5-TiO2 electrode coupled with the IrO2-Ta2O5 electrode was investigated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Furthermore, the selectivity of CER was analyzed through the potential difference between the CER and OER at a constant current density to illustrate the discrepancy in available chlorine content (ACC) of two kinds of oxide electrodes in the EO water preparation. In addition, the accelerated service lifetime of the IrO2-Ta2O5-TiO2 electrode was also discussed in this article. © 2018 Elsevier B.V.
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英文
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Preparation of the Ordered Spherical Ru-RuO2 and Electrocatalysis toward Chlorine Evolution Reaction
作者：
Wang, Ju;Zhai, Conghui;Chen, Hanruo;Cong, Ning;Tan, Lingjun;...
期刊：
International Journal of Electrochemical Science ,2019年14(11):10187-10197 ISSN：1452-3981
通讯作者：
Zhu, Yuchan
作者机构：
[Chen, Hanruo; Zhu, Yuchan; Wang, Ju; Tan, Lingjun; Zhou, Xiaorong; Zhai, Conghui; Cong, Ning; Fang, Hua; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhu, Yuchan] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Chlorine evolution reaction;Ru-RuO2;ordered structure;electronic structure
摘要：
Chlorine evolution reaction (CER) is a very important electrochemical reaction process in modern electrochemical industry. To develop an efficient CER electrode, not only the active components but also the morphology of the electrode should be considered. In this work, the ordered spherical Ru-RuO2 electrode was prepared by hydrothermal reaction for improving the CER activity. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and X-ray diffraction (XRD) characterizations were employed to analyze the electrode structures. Compared with RuO2 electrode prepared by Adams method, the CER activity of Ru-RuO2 electrode is obviously improved. The improvement of activity should be attributed to the change of electronic structure and the ordered structure of electrode surface. The prepared Ru-RuO2 particles are spherical and evenly distributed, thus showing an orderly morphology. Such an unified structure can be conducive to the diffusion of Cl2. The diffraction peak of (101) crystal plane of Ru-RuO2 electrode has slightly positive shifted of 0.4°. It indicates that the lattice of RuO2 on the outside surface of Ru-RuO2 has been compressed to a certain extent, which may reduce the adsorption energy of Cl and accelerate the rate of chlorine desorption process. © 2019 The Authors. Published by ESG. All Rights Reserved.
语种：
英文
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Effect of platinum electrode materials and electrolysis processes on the preparation of acidic electrolyzed oxidizing water and slightly acidic electrolyzed water
作者：
Song, Xiang;Zhao, Hui;Fang, Keneng;Lou, Yongshan;Liu, Zongkui;...
期刊：
RSC Advances ,2019年9(6):3113-3119 ISSN：2046-2069
通讯作者：
Ren, Zhandong;Zhu, Yuchan
作者机构：
[Liu, Chifeng; Zhu, Yuchan; Song, Xiang; Lou, Yongshan; Ren, Zhandong; Zhu, YC; Zhao, Hui; Zhou, Xiaorong; Liu, Zongkui; Fang, Hua; Fang, Keneng] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Ren, ZD; Zhu, YC] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
摘要：
Electrolyzed oxidizing water (EOW) can be divided into acidic electrolyzed oxidizing water (AEOW) and slightly acidic electrolyzed water (SAEW). AEOW has the characteristics of low pH (pH < 2.7) and high oxidation-reduction potential (ORP > 1100 mV). SAEW is slightly acidic (pH = 5-6) and has an ORP of 700-900 mV. AEOW and SAEW both have a certain amount of active chlorine content (ACC), so they have the characteristics of broad spectrum, rapidity and high efficiency of sterilization. At present, there is little systematic research on AEOW and SAEW preparation. However, it is very important to study the preparation process, including electrode material and electrolytic process. First, the effects of Pt electrodes with different thermal decomposition temperatures on AEOW's pH, ORP and ACC values were investigated in detail. Next, for the SAEW preparation, the process is based on the preparation of AEOW by ion-exchange membrane electrolysis, reasonably mixing the electrolyzed cathode and anode solution. The effects of technological conditions such as electrolysis time, current density and electrolyte concentration have been systematically studied, and it is expected to get SAEW with a pH value slightly less than 7, a higher ORP value and a certain amount of ACC. © 2019 The Royal Society of Chemistry.
语种：
英文
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A silicon-doped iridium electrode prepared by magnetron-sputtering as an advanced electrocatalyst for overall water splitting in acidic media
作者：
Ren, Zhandong* ;Jin, Lingzhi;Deng, Li;Ming, Ruoxi;Zhang, Ailian;...
期刊：
Sustainable Energy & Fuels ,2019年3(9):2321-2328 ISSN：2398-4902
通讯作者：
Ren, Zhandong;Zhu, Yuchan
作者机构：
[Jin, Lingzhi; Deng, Li; Zhu, Yuchan; Ming, Ruoxi; Ren, Zhandong; Zhu, YC; Zhou, Xiaorong; Chai, Bo; Zhang, Ailian] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Ren, ZD; Zhu, YC] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
摘要：
With increasing demands for clean and renewable energy, electrocatalytic water splitting is considered as the most promising procedure of hydrogen production. Pt is the best catalyst for the hydrogen evolution reaction (HER). However, the low oxygen evolution reaction (OER) activity of Pt prevents it from becoming a bifunctional catalyst in practical application. Ir-based electrocatalysts with good OER activities are expected to become the most promising bifunctional catalysts once their HER activities are improved. Herein, we report a simple synthesis of a Si-doped Ir electrode using magnetron sputtering. The physical and electrochemical characterization of the materials is achieved by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray fluorescence (XRF), X-ray diffraction (XRD) and X-ray photoelectron spectrometry (XPS). The electrochemical catalytic activity of the Si-doped Ir electrode toward the HER is demonstrated for the first time. Cyclic voltammetry (CV) curves reveal that the addition of Si can improve the utilization rate of Ir and result in a large electrochemical surface area (ESA). The overpotential of the Si-doped Ir electrode for the HER (eta = 114 mV, 50 mA cm(-2)) is obviously lower than that of an Ir electrode (eta = 148 mV, 50 mA cm(-2)) and very close to that of a Pt electrode (eta = 106 mV, 50 mA cm(-2)). The mass specific activity of the Si-doped Ir electrode exceeds that of an Ir electrode by a factor of ca. 2 at an overpotential of eta = 200 mV. The superior HER activity of the Si-doped Ir electrode could be attributed to the electronic structure modification of Ir by the interaction effect with Si as studied through XPS analysis. Moreover, the Tafel slope of 36.5 mV dec(-1) suggests that the mechanism for the Si-doped Ir electrode-catalyzed HER is Volmer-Tafel, in which the recombination of two adsorbed hydrogen atoms is the rate-determining step. In addition, the OER activity of the Si-doped Ir electrode outperforms that of an Ir electrode, which enables the Si-doped Ir electrode to be used as a bifunctional catalyst for overall water electrolysis.
语种：
英文
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氧化电解水对油菜秸秆降解处理研究
作者：
郗腾;鲁明珠;袁敏;邓力;任占冬;...
期刊：
化工新型材料 ,2018年46(1):207-209,213 ISSN：1006-3536
作者机构：
[郗腾; 鲁明珠; 袁敏; 邓力; 任占冬; 张开诚; 朱玉婵] 武汉轻工大学化学与环境工程学院, 武汉, 430023
关键词：
酸性氧化电解水;油菜秸秆;预处理;还原糖得率
摘要：
为了提高油菜秸秆木质纤维素的能源化利用效率,研究了常压温和条件下利用氧化电解水(EOW)处理油菜秸秆的效果。研究结果表明,在处理时间3h,温度30℃,pH=2.04,EOW有效氯含量105mg/L条件下,EOW对油菜秸秆的还原糖得率达到16.88%,而对照组仅为11.35%,具有较好的处理效果。
语种：
中文
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Effect of electrode material and electrolysis process on the preparation of electrolyzed oxidizing water
作者：
Ming, Ruoxi;Zhu, Yuchan;Deng, Li;Zhang, Ailian;Wang, Ju;...
期刊：
NEW JOURNAL OF CHEMISTRY ,2018年42(14):12143-12151 ISSN：1144-0546
通讯作者：
Ren, Zhandong
作者机构：
[Deng, Li; Zhu, Yuchan; Ming, Ruoxi; Wang, Ju; Chai, Bo; Zhang, Ailian; Han, Yongqi; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Ren, Zhandong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
electrolyzed oxidizing water;iridium;oxidizing agent;platinum;ruthenium;unclassified drug;water;Article;chemical parameters;current density;electrolysis;energy consumption;heating;instrument sterilization;ion exchange;lifespan;physical parameters;priority journal;temperature
摘要：
Electrolyzed oxidizing water (EO water) bactericide is an indirect electrochemical sterilization technology, which is characterized by broad-spectrum, rapid and powerful sterilization. EO water, with a certain amount of available chlorine content (ACC), is generated by electrolysis of an extremely dilute NaCl solution. It is very important to study the preparation process of EO water, including electrode material and electrolytic process. In this paper, the effect of electrode material (platinum, iridium or ruthenium) on the physical and chemical parameters of EO water was investigated first. The effect of electrode composition and roasting temperature on the ACC of EO water was rigorously analyzed. The sterilization effect of EO water produced by different electrode materials was further discussed. In addition, the accelerated service lifetime of the electrode and exchange electrode polarity electrolysis were also investigated. Next, for the electrolysis process, the effects of ion exchange membrane type, current density and electrolyte concentration on the ACC of EO water, anode current efficiency and energy consumption were also studied. Finally, the stability of EO water, that is, the influence of illumination, heating and stirring on the physical and chemical parameters of EO water, was also observed in detail. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2018.
语种：
英文
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微酸性电解水对板栗仁的杀菌抑菌作用
作者：
何树钒;王乐;张欢;陈家豪;任占冬;...
期刊：
中国消毒学杂志 ,2017年34(8):726-729 ISSN：1001-7658
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[王乐; 任占冬; 陈家豪; 张开诚; 何树钒; 张欢; 朱玉婵] 武汉轻工大学
关键词：
微酸性电解水;板栗仁;食品保鲜;杀菌;抑菌
摘要：
目的考察微酸性电解水（SAEW）对板栗仁的杀菌抑菌作用。方法通过与常用杀菌剂进行对比,考察微酸性电解水对板栗仁的杀菌抑菌效果。考察有效氯浓度和杀菌时间等影响因素对微酸性电解水杀菌抑菌效果的影响。结果微酸性电解水具有高效的杀菌抑菌作用,明显优于Na HSO3和Na Cl O等常用杀菌剂。当SAEW有效氯含量为88.31 mg/L、杀菌时间为3 min时,对板栗仁上细菌的杀菌效率高达91.74%,杀灭对数值为1.08,杀菌后细菌含量为4.13 lg cfu/g。微酸性电解水同样表现出较好的抑菌效果。杀菌后第3 d,与对照组相比,细菌减少量为1.54 lg cfu/g;杀菌后第5 d,细菌减少量仍为1.17 lg cfu/g,比Na HSO3和Na Cl O分别提高了3.08和1.83倍。结论微酸性电解水是一种高效杀菌剂,其p H值接近中性,在食品保鲜领域有推广使用价值。
语种：
中文
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IrO2-TiO2 electrocatalysts for the hydrogen evolution reaction in acidic water electrolysis without activation
作者：
Yuan, Min;Zhu, Yuchan;Deng, Li;Ming, Ruoxi;Zhang, Ailian;...
期刊：
NEW JOURNAL OF CHEMISTRY ,2017年41(14):6152-6159 ISSN：1144-0546
通讯作者：
Ren, Zhandong
作者机构：
[Deng, Li; Yuan, Min; Zhu, Yuchan; Ming, Ruoxi; Chai, Bo; Zhang, Ailian; Li, Wenyang; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Ren, Zhandong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
hydrogen;iridium;iridium oxide;titanium dioxide;unclassified drug;water;Article;catalysis;catalyst;cyclic potentiometry;decomposition;electrochemical analysis;electrochemical impedance spectroscopy;electrochemistry;electrode;electrolysis;hydrogen evolution;hysteresis;particle size;potentiometry;priority journal;scanning electron microscopy;surface area;temperature;X ray diffraction;X ray fluorescence
摘要：
The development of highly active and long-term stable electrocatalysts for the hydrogen evolution reaction (HER) is very important. Because of the hysteresis phenomenon, IrO2 is rarely used as a cathode material for the HER. Herein, an IrO2-TiO2 composite oxide was prepared using the thermal decomposition method. The physical and electrochemical characterization of the materials was achieved by scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). In the process of the HER, the current of IrO2 is only 1.91 mA cm-2@-0.2 V in the first segment scan. However, at the 51, 101 and 151 segment scan, the HER current increases to 6.85, 15.7 and 18.2 mA cm-2@-0.2 V, respectively. During the activation process of IrO2, the HER current has increased ten times. Compared with the HER activity of IrO2, there is almost no hysteresis for the IrO2-TiO2 electrode. In the first segment scan, the HER current has already reached 27.9 mA cm-2@-0.2 V and further increased to 31.1, 33.1 and 35.0 mA cm-2 at the 51, 101 and 151 segment scan. The difference between them is not significant, which means that the IrO2-TiO2 electrode does not need activation. The IrO2-TiO2 electrode has exhibited a higher HER activity than the IrO2 electrode, which may be attributed to the electronic structure modification and the increase of the electrochemical area. © 2017 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
语种：
英文
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Synthesis and characterization of an IrO2-Fe2O3 electrocatalyst for the hydrogen evolution reaction in acidic water electrolysis
作者：
Yang, Xian;Li, Yande;Deng, Li;Li, Wenyang;Ren, Zhandong;...
期刊：
RSC Advances ,2017年7(33):20252-20258 ISSN：2046-2069
通讯作者：
Zhu, Yuchan
作者机构：
[Deng, Li; Zhu, Yuchan; Yang, Xian; Li, Yande; Li, Wenyang; Ren, Zhandong; Yang, Xiaohong; Yang, Ming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Zhu, Yuchan] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
Water electrolysis is one of the most promising processes for a hydrogen-based economy, so the development of highly active, durable, and inexpensive catalysts for the hydrogen evolution reaction (HER) is very important. IrO<inf>2</inf>is known to be one of the most active catalysts for the oxygen evolution reaction (OER) in a PEM electrolyzer, but the HER activity of IrO<inf>2</inf>is rarely studied because of its low cathodic current compared to platinum. Herein, an IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>composite oxide was prepared by a thermal decomposition method. The physical and electrochemical characterization of the material was achieved by scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Compared to that of IrO<inf>2</inf>, the CV curves of the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode reveal that hydrogen is more easily adsorbed on the surface, which would lead to the H underpotential deposition (H-UPD) redox current increasing significantly. Therefore, the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode exhibits higher HER activity than that of the IrO<inf>2</inf>electrode in 0.5 M H<inf>2</inf>SO<inf>4</inf>solution as shown by linear sweep voltammetry (LSV). It is attributed to the electronic structure modification of IrO<inf>2</inf>and synergetic effect between Ir and Fe in the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode. In addition, the Tafel slope of 36.2 mV dec<sup>-1</sup>suggests that the mechanism for the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>-catalyzed HER is Volmer-Heyrovsky. ©The Royal Society of Chemistry.
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英文
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High-efficiency electrochemical hydrogen evolution based on the intermetallic Pt2Si compound prepared by magnetron-sputtering
作者：
Zhu, Yuchan;Yuan, Min;Deng, Li;Ming, Ruoxi;Zhang, Ailian;...
期刊：
RSC Advances ,2017年7(3):1553-1560 ISSN：2046-2069
通讯作者：
Ren, Zhandong
作者机构：
[Deng, Li; Zhu, Yuchan; Yuan, Min; Ming, Ruoxi; Chai, Bo; Zhang, Ailian; Ren, Zhandong; Yang, Ming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Ren, Zhandong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
The development of highly active and stable electrocatalysts for the hydrogen evolution reaction (HER) is central to the area of renewable energy. Si nanocomposites exhibited high efficiency in a light-induced hydrogen evolution reaction. However, there are few reports on the experimental application of the electrochemical HER. Herein, we report a simple synthesis of an intermetallic Pt<inf>2</inf>Si electrode using magnetron sputtering (MS) synthesis. The physical and electrochemical characterization of the materials was achieved by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray fluorescence (XRF), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Herein, the electrochemical catalytic activity towards the HER of an intermetallic Pt<inf>2</inf>Si MS (IM-Pt<inf>2</inf>Si-MS) electrode is demonstrated for the first time. Cyclic voltammetry (CV) curves reveal that the H underpotential deposition (H-UPD) peaks of the IM-Pt<inf>2</inf>Si-MS electrode shift to higher potentials than those of a Pt electrode, which indicates that hydrogen is more easily adsorbed on the Pt<inf>2</inf>Si surface. Thus, the IM-Pt<inf>2</inf>Si-MS electrode exhibited a higher HER activity than that of a Pt electrode in 0.5 M H<inf>2</inf>SO<inf>4</inf>solution through linear sweep voltammetry (LSV). This is attributed to the electronic structure modification of Pt and the synergistic effect of the Pt-Si binary alloy in the IM-Pt<inf>2</inf>Si-MS electrode. In addition, the Tafel slope of 30.5 mV dec<sup>-1</sup>indicates that the mechanism for the Pt<inf>2</inf>Si-catalyzed HER is Volmer-Tafel, for which the combined desorption of hydrogen is the rate-limiting step. ©The Royal Society of Chemistry.
语种：
英文
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PBL-LBL相结合教学模式在材料化学课程教学中的应用探索
作者：
柴波;高新蕾;王婷婷;朱玉婵;杨晓鸿
期刊：
教育教学论坛 ,2017年(11):165-166 ISSN：1674-9324
作者机构：
武汉轻工大学 化学与环境工程学院,武汉,430023;[王婷婷; 柴波; 杨晓鸿; 高新蕾; 朱玉婵] 武汉轻工大学
关键词：
PBL-LBL教学模式;材料化学;创新
摘要：
针对《材料化学》课程的特点,在课程教学中实施PBL-LBL相结合的教学模式,探讨了实施该教学模式的必要性及具体实施过程,并对PBL—LBL相结合教学模式中应注意的问题进行探索。
语种：
中文
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Enhanced visible light photocatalytic degradation of Rhodamine B over phosphorus doped graphitic carbon nitride
作者：
Chai, Bo* ;Yan, Juntao;Wang, Chunlei;Ren, Zhandong;Zhu, Yuchan
期刊：
Applied Surface Science ,2017年391:376-383 ISSN：0169-4332
通讯作者：
Chai, Bo
作者机构：
[Zhu, Yuchan; Wang, Chunlei; Chai, Bo; Yan, Juntao; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Chai, Bo] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Charge carrier separation;Degradation;Phosphorus doped g-C 3 N 4;Photocatalytic activity
摘要：
Phosphorus doped graphitic carbon nitride (g-C<inf>3</inf>N<inf>4</inf>) was easily synthesized using ammonium hexafluorophosphate (NH<inf>4</inf>PF<inf>6</inf>) as phosphorus source, and ammonium thiocyanate (NH<inf>4</inf>SCN) as g-C<inf>3</inf>N<inf>4</inf>precursor, through a direct thermal co-polycondensation procedure. The obtained phosphorus doped g-C<inf>3</inf>N<inf>4</inf>was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectra (FTIR), UV–vis diffuse reflectance absorption spectra (UV-DRS), photoelectrochemical measurement and photoluminescence spectra (PL). The photocatalytic activities of phosphorus doped g-C<inf>3</inf>N<inf>4</inf>samples were evaluated by degradation of Rhodamine B (RhB) solution under visible light irradiation. The results showed that the phosphorus doped g-C<inf>3</inf>N<inf>4</inf>had a superior photocatalytic activity than that of pristine g-C<inf>3</inf>N<inf>4</inf>, attributing to the phosphorus atoms substituting carbon atoms of g-C<inf>3</inf>N<inf>4</inf>frameworks to result in light harvesting enhancement and delocalized π-conjugated system of this copolymer, beneficial for the increase of photocatalytic performance. The photoelectrochemical measurements also verified that the charge carrier separation efficiency was promoted by phosphorus doping g-C<inf>3</inf>N<inf>4</inf>. Moreover, the tests of radical scavengers demonstrated that the holes (h<sup>+</sup>) and superoxide radicals ([rad]O<inf>2</inf><sup>−</sup>) were the main active species for the degradation of RhB. ©2016 Elsevier B.V.
语种：
英文
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Preparation of electrolyzed oxidizing water with a platinum electrode prepared by magnetron sputtering technique
作者：
Wei, Shaonan;Shi, Liubin;Ren, Zhandong* ;Zhang, Ailian;Ming, Ruoxi;...
期刊：
RSC Advances ,2017年7(72):45377-45384 ISSN：2046-2069
通讯作者：
Ren, Zhandong;Zhu, Yuchan
作者机构：
[Shi, Liubin; Wei, Shaonan; Zhu, Yuchan; Ming, Ruoxi; Ren, Zhandong; Zhu, YC; Chai, Bo; Zhang, Ailian] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Ren, ZD; Zhu, YC] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
摘要：
Electrolyzed oxidizing water (EO water) with low pH (2.2-2.7), high oxidation-reduction potential (ORP > 1100 mV), and available chlorine content (ACC) of 30-80 mg L-1 has an efficiently bactericidal activity and wide adaptability against many food-borne pathogens. EO water could be generated by electrolysis of a dilute NaCl solution in an electrolysis chamber with a Pt/Ti electrode. In this study, the Pt/Ti electrode was prepared by magnetron sputtering technique. The electrode surface has the characteristic of specific growth along the [111] direction. At the same time, the platinum electrodes prepared through thermal decomposition and electrodeposition as the control were also investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to study the performances of these three types of Pt/Ti electrode. The effects of the physicochemical properties of the Pt electrodes on their electrochemical behaviors were studied. Furthermore, the values of pH, ORP, ACC, Cl- and the sterilization effect of EO water using these Pt electrodes as anode materials have been systematically discussed. In addition, the content of HClO, ClO-, O3 and dissolved oxygen in EO water using the Pt-MS electrode has also been reported in this article. © 2017 The Royal Society of Chemistry.
语种：
英文
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沿[111]方向择优生长Pt/Ti电极制备及析氯电催化活性
作者：
Zhu Yu-Chan;Yuan Min;Zhang Huan;Wang Le;Quan Shan-Shan;...
期刊：
无机材料学报 ,2016年31(5):510-516 ISSN：1000-324X
通讯作者：
Ren Zhan-Dong
作者机构：
[Quan Shan-Shan; Chai Bo; Wang Le; Ren Zhan-Dong; Zhang Huan; Zhu Yu-Chan; Yuan Min] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Ren Zhan-Dong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
氯析出;磁控溅射;形貌;机理
摘要：
针对目前低浓度氯化钠电解过程中存在的氧化物尺寸稳定阳极(DSA)使用寿命短以及Pt电极使用量高的问题,本研究通过磁控溅射法制备了具有沿[111]方向择优生长的Pt/Ti电极。SEM结果显示,磁控Pt表面平整,分散均匀,粒度大小为10 nm;通过XPS表征,未见到基体Ti的特征峰,说明其表面覆盖度好。电化学循环伏安曲线(CV)显示,磁控Pt的电化学面积最小,仅为1.08 cm~2,接近电极表观面积;磁控Pt氧区吸附电量和氢区吸附电量的比仅为0.83,说明其对氧吸附能力较差,不利于发生析氧反应。在单位电化学面积上,当电极电势为1.6 V时,磁控Pt的析氯电流达到0.085 A/cm~2,分别是电沉积Pt和热分解Pt的3.27和49.0倍,说明磁控Pt单位活性位点上具有很高的析氯反应活性。在此基础上,进一步研究表明磁控Pt电极析氯反应的Tafel斜率为44.3 mV/dec,其析氯反应机理符合Volmer-Heyrovsky机理,速控步骤为电化学复合脱附步骤。
语种：
中文
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改性MCM-41分子筛对阴离子偶氮染料的吸附作用机理
作者：
全姗姗;朱玉婵;任占海;郗腾;鲁明珠;...
期刊：
化工进展 ,2016年35(1):320-326 ISSN：1000-6613
通讯作者：
Zhu, Yuchan(zhuyuchan@163.com)
作者机构：
[全姗姗; 朱玉婵; 郗腾; 鲁明珠; 任占冬] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan;Hubei;430023, China;[任占海] PetroChina Jilin Petrochemical Company, Jilin;Jilin
关键词：
吸附;甲基红;分子筛;表面电荷
摘要：
制备了改性介孔分子筛NH_3~+-MCM-41,研究了其对阴离子偶氮染料甲基红的吸附效果。研究表明,通过氨基改性使介孔分子筛MCM-41表面电荷发生改变,从而利用静电吸附作用改善了脱除效果,使甲基红吸附率提高了1.1倍,达到90.4%。溶液pH值的改变会影响NH_3~+-MCM-41的表面电荷,从而影响吸附效率,其最佳pH值为4。溶液中的杂质离子均会对吸附产生影响,当溶液中含有Cl~-、NO_3~-时,对吸附效果影响不大;而当溶液中含有CO_3~(2-)和HPO_4~(2-)等高价弱酸根离子时,对吸附效果影响很大,基本不吸附染料。此外,通过其吸附动力学研究发现,吸附过程中不符合准一级动力学模型,而较好符合准二级动力学,说明在该过程中存在化学吸附,这种化学吸附涉及吸附剂与吸附质之间的电子共用或电子转移。
语种：
中文
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Biosorption of methylene blue from aqueous solution by natural Osmanthus fragrans powder
作者：
Chai, Bo* ;Cheng, Xianzhong;Ren, Zhandong;Zhu, Yuchan
期刊：
Desalination and Water Treatment ,2016年57(40):18868-18878 ISSN：1944-3994
通讯作者：
Chai, Bo
作者机构：
[Cheng, Xianzhong; Zhu, Yuchan; Chai, Bo; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Chai, Bo] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Adsorption;Methylene blue;Osmanthus fragrans powder;Isotherm;Kinetics
摘要：
The potential of Osmanthus fragrans powder as a natural biosorbent was investigated for the removal of methylene blue (MB) from aqueous solution. The effects of various experimental conditions including contact time, adsorbent dose, initial MB concentration, solution pH, salt ionic strength, and temperature on the adsorption properties of O. fragrans powder were discussed. The adsorption kinetic data were modeled using pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetics equations, indicating that the pseudo-second-order and intraparticle diffusion models could better describe the adsorption kinetics. Furthermore, adsorption equilibrium data were analyzed by Langmuir and Freundlich models, suggesting the Langmuir model presented a better correlation with the experimental data. The maximum adsorption capacities (qm) of O. fragrans powder for MB obtained from the Langmuir model were 155.52, 165.02, and 172.71mgg−1 at different temperatures of 288.15, 298.15, and 308.15K, respectively. Thermodynamic parameters such as standard free energy changes (ΔG°), standard enthalpy changes (ΔH°), and standard entropy changes (ΔS°) were also calculated. The results showed that the adsorption process was spontaneous and endothermic in nature. In addition, the possible adsorption mechanism of O. fragrans powder as adsorbent was proposed. The present study implies that O. fragrans powder were a promising candidate as novel biosorbents for the removal of MB from aqueous solution. © 2015 Balaban Desalination Publications. All rights reserved.
语种：
英文
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非晶态CuO/MCM-41制备及对H_2 S的深度脱除
作者：
朱玉婵;任占海;袁敏;刘毅;岳欢;...
期刊：
现代化工 ,2016年36(3):125-128 ISSN：0253-4320
通讯作者：
Ren, Z.-D.
作者机构：
武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023;中石油吉林石化分公司, 吉林, 吉林, 132021;[朱玉婵; 袁敏; 刘毅; 岳欢; 任占冬] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023;[任占海] 中石油吉林石化分公司, 吉林, 吉林, 132021
通讯机构：
School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
关键词：
非晶态;深度脱除;传质
摘要：
针对目前负载型金属氧化物在深度脱除H_2 S过程中存在的吸附剂孔径堵塞和传质限制的问题,通过络合配位法制备了非晶态CuO/MCM-41吸附剂,减小了CuO粒径,改善了载体孔结构堵塞情况。结果表明,非晶态CuO/MCM-41吸附剂对H_2 S脱除效果较好,能够使净化后H_2 S质量浓度小于1 mg/m~3,吸附容量达到12.5 mg(H_2 S)/(g吸附剂),是MCM-41的24倍,比常规CuO/AC高1.3倍。在此基础上,考察了CuO负载量、氧体积分数和吸附温度的影响。结果表明,当CuO负载量为6.4%,氧体积分数为0.4%时,吸附效果最好。在30~ 90℃范围内,吸附温度对脱除效果的影响呈先下降后上升的趋势,在60℃附近存在物理吸附向化学吸附的转变过程。
语种：
中文
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氧化电解水凝胶的制备及杀菌效果
作者：
朱玉婵;景莉;袁敏;刘毅;赵干;...
期刊：
现代化工 ,2016年36(5):106-109,111 ISSN：0253-4320
通讯作者：
Ren, Z.-D.
作者机构：
[朱玉婵; 景莉; 袁敏; 刘毅; 赵干; 吴祯祯; 任占冬] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023
通讯机构：
School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
关键词：
氧化电解水;水凝胶;有效氯;杀菌
摘要：
利用浸渍法制备了氧化电解水凝胶。结果表明,不同有效氯质量浓度氧化电解水凝胶释放曲线类似,随着浸渍时间的延长,浸渍液中有效氯质量浓度变化呈现2个峰值,分别对应着凝胶表层中氧化电解水快速释放出和凝胶内部的氧化电解水释放。氧化电解水有效氯质量浓度越高,释放出来有效氯的质量浓度越多,达到峰值时间越短。在此基础上,考察了氧化电解水凝胶的杀菌作用,随着杀菌时间的延长,氧化电解水凝胶的杀菌效果不断提高,当杀菌时间为60 min,杀菌效率达到79.76%;而对照组(普通水凝胶)的杀菌效率仅为23.01%,提高了近4倍,说明氧化电解水凝胶具有较好的杀菌作用,且明显优于无负载氧化电解水的水凝胶。
语种：
中文
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CuO/AC@SiO_2的制备及对H_2S的深度脱除
作者：
许芳;朱玉婵;魏少楠;宋翔;李永清;...
期刊：
化工环保 ,2016年36(2):200-204 ISSN：1006-1878
作者机构：
武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023;海军工程大学舰船工程系, 湖北, 武汉, 430033;[许芳; 朱玉婵; 魏少楠; 宋翔; 任占冬] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023;[李永清] 海军工程大学舰船工程系, 湖北, 武汉, 430033
关键词：
硫化氢;介孔结构;有效穿透时间;前驱体;吸附量
摘要：
采用模板法在CuO外包裹一层具有介孔结构的SiO_2,制备了CuO/AC@SiO_2。采用X射线衍射仪对CuO/AC@SiO_2的结构和催化活性位点进行了表征。通过固定床气固吸附实验,研究了CuO/AC@SiO_2对H_2S的吸附脱除性能。表征结果显示,CuO是催化氧化H_2S的活性中心,被氧化成Cu2O后吸附脱除H_2S的性能下降。实验结果表明:CuO/AC吸附H_2S时的有效穿透时间为117 min,CuO/AC@SiO_2的有效穿透时间提高到141 min,CuO/AC@SiO_2对H_2S的吸附性能明显提高;以Cu(NO_3)_2为前驱体的CuO/AC@SiO_2对H_2S的吸附量高于以Cu(AC)2为前驱体;在Cu(NO_3)_2为前驱体、m(正硅酸乙酯)∶m(CuO/AC)=0.7、吸附温度为90 ℃的最佳条件下,CuO/AC@SiO_2对H_2S的吸附量达17.40 mg/g。
语种：
中文
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The electrocatalytic activity of IrO2-Ta2O5 anode materials and electrolyzed oxidizing water preparation and sterilization effect
作者：
Ren, Zhandong* ;Quan, Shanshan;Gao, Jie;Li, Wenyang;Zhu, Yuchan;...
期刊：
RSC Advances ,2015年5(12):8778-8786 ISSN：2046-2069
通讯作者：
Ren, Zhandong
作者机构：
[Liu, Ye; Zhu, Yuchan; Wang, Yourong; Chai, Bo; Gao, Jie; Ren, Zhandong; Li, Wenyang; Quan, Shanshan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Ren, Zhandong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
Ti/IrO<inf>2</inf>-Ta<inf>2</inf>O<inf>5</inf>anode electrocatalysts with different contents and preparation temperatures were prepared by thermal decomposition in this work. The crystallite characterization and morphology were examined via XRD and SEM. The electrochemical properties were examined via cyclic voltammetry (CV) in 0.5 M H<inf>2</inf>SO<inf>4</inf>and linear sweep voltammetry (LSV) in saturated sodium chloride. Through the study of different series of Ti/IrO<inf>2</inf>-Ta<inf>2</inf>O<inf>5</inf>anodes, we find that the preparation conditions have a great impact on the electrode catalytic activity. Experimental results indicate that the electrochemically active surface area is determined by the content and morphology of the anode coating. When the IrO<inf>2</inf>content and the preparation temperature are 70% and 500 °C, the surface of the electrode is aggregated with segregated crystallite flower-like particles, which brings about the best electrode catalytic activity. The current density in the chlorine evolution reaction of IrO<inf>2</inf>-Ta<inf>2</inf>O<inf>5</inf>(70% and 500 °C) is 0.4 A cm<sup>-2</sup>in saturated sodium chloride. The properties and sterilization effect of EO water are closely related to the electrode catalytic activity. The higher the current density is in chlorine evolution, the higher the available chlorine and HClO content. When the IrO<inf>2</inf>content is 70% and the preparation temperature is 500 °C, the maximum values of the killing logarithm value and killing rate are 3.01-3.05 and 99.9023-99.9109%, respectively. In addition, when the Ti substrate undergoes 40 minutes of activation treatment, the Ti/IrO<inf>2</inf>-Ta<inf>2</inf>O<inf>5</inf>anodes have the highest stability. ©The Royal Society of Chemistry 2015.
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英文
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