摘要：
In this paper, the properties and evolution during the calcination process of hydrolysis by−products from Al‐water reaction for hydrogen generation were systematically investigated. The phase composition of by−products included AlOOH, InSn4, and trace phases. AlOOH constructed with flower‐like shape with micro/nano petals was obtained from the hydrolysis reaction. The phase transformation from AlOOH to γ−Al2O3, γ− Al2O3, and α−Al2O3 occurs during the calcination process. Discussion on the properties and evolution of hydrolysis by−products are beneficial to product reuse and recovery. Abstract In this paper, the properties and evolution during the calcination process of hydrolysis by−products from the reaction between Al−based composites and water for hydrogen generation were systematically investigated. The results showed that the main phases of by−products included AlOOH and InSn4. The amorphous product possessed a large Brunauer−Emmett−Teller (BET) surface area with 276.77 m2/g and high porosity properties with 0.37 cm3/g. The phase transformation of by−products from AlOOH to γ−Al2O3, δ−Al2O3, and α−Al2O3 occurred during the calcination process. It appears that the by−products can be used as raw materials for the preparation of Al2O3 with different crystal structures. Discussion on the properties and evolution of hydrolysis by−products are beneficial to product reuse and recovery. In this way, the cost reduction of hydrogen production via Al−water reaction can be realized, promoting the sustainable development of hydrogen production from Al−water reaction.
作者机构：
[张敏] College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan;430048, China;[张祥] The First Construction Company, CCCC Second Harbor Engineering Co., Ltd., Wuhan;430012, China;[赵延杰; 张伦平] China Ship Scientific Research Center, Wuxi
通讯机构：
[Zhang, M.] C;College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, China
作者机构：
[Hu, Zhigang; Li, Bin; Hao, Wenrui; Zhou, Mengjing; Ma, Ming] Wuhan Polytech Univ, Sch Mech Engn, Wuhan 430023, Hubei, Peoples R China.;[Wang, Peng] Wuhan Second Ship Design & Res Inst, Wuhan 430205, Peoples R China.;[Liu, Jizhen] Wuhan Univ Technol, Hubei Key Lab Theory & Applicat Adv Mat Mech, Wuhan 430070, Hubei, Peoples R China.
通讯机构：
[Peng Wang] W;Wuhan Second Ship Design and Research Institute, Wuhan, China
摘要：
A deep eutectic solvent (DES) was prepared from choline chloride (ChCl), acrylamide (AM) and acrylic acid (AA); chitosan (CS) was used as a filler, and CS/P(AM-co-AA) composite hydrogels were prepared by frontal polymerization (FP). The hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The mechanical properties, pH responsiveness and conductivity of the hydrogel were studied. The results showed that the mechanical properties of the hydrogel were significantly improved by adding CS, and the tensile strength and compressive strength were increased by 11.61 and 1.65 times respectively due to the increase in number of hydrogen bonds. At the same time, due to the presence of AA, the composite hydrogel has excellent pH response and super high swelling performance under alkaline conditions. The introduction of CS enhanced the conductivity of the hydrogel and gradually increased with the increase of CS content. The conductivity of the hydrogel with CS content of 10 wt% was nearly 160 times that of the hydrogel without CS. In this study, a more convenient and rapid method was proposed to prepare conductive composite hydrogels with excellent mechanical properties and pH responsiveness.
作者：
Chen, F.;Mei, Q. S.;Li, J. Y.;Li, C. L.;Wan, L.;...
期刊：
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing,2022年839:142859 ISSN：0921-5093
通讯作者：
Mei, QS
作者机构：
[Mei, Q. S.; Xu, T.; Chen, F.; Chen, Z. H.; Li, C. L.; Wang, Y. C.; Mei, X. M.; Tan, Y. Y.; Wan, L.] Wuhan Univ, Sch Power & Mech Engn, Wuhan 430072, Peoples R China.;[Li, J. Y.] Wuhan Polytech Univ, Sch Mech Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Mei, QS ] W;Wuhan Univ, Sch Power & Mech Engn, Wuhan 430072, Peoples R China.
关键词：
Cu matrix composites;Dual reinforcements;Synergistic strengthening;Accumulative roll-compositing
摘要：
Cu metal matrix composites (MMCs) incorporated with dual reinforcements of nanocarbons and Al2O3 particles with different contents were prepared by accumulative roll-compositing (ARC). Microstructure and properties of the dual-reinforced Cu MMCs were systematically investigated and compared with those of the individual reinforced counterparts. Results showed that both the individual and dual reinforcements can be homogenously incorporated into and well-bonded with Cu matrix by ARC. The dual-reinforced Cu MMCs exhibited high strength (up to ~747 MPa) and better comprehensive properties of strength/elongation and strength/electrical conductivity than those of the individual counterparts. Moreover, a synergistic strengthening effect of 1 + 1 > 2 of the dual reinforcements was revealed. The influences of content, distribution and interfacial interaction of the dual reinforcements on the properties of the Cu MMCs were discussed. This study indicated the method and mechanisms for further improving the comprehensive properties of Cu MMCs at high strength level by introducing dual reinforcements.
通讯机构：
[Qianqian Lin] S;[Qiang Cao] T;The Institute of Technological Sciences, Wuhan University, Wuhan, 430072 China<&wdkj&>School of Physics and Technology, Wuhan University, Wuhan, 430072 China<&wdkj&>Suzhou Institute of Wuhan University, Suzhou, 255123 China
关键词：
femtosecond laser direct writing;micro-grating;perovskite photodetectors;thermal co-evaporation
