Promoting the photocatalytic NO oxidation activity of hierarchical porous g-C3N4 by introduction of nitrogen vacancies and charge channels

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成果类型：

期刊论文

作者：

Xia, Yang;Yang, Heng;Ho, Wingkei;Zhu, Bicheng;Yu, Jiaguo

通讯作者：

Ho, WK;Yu, JG

作者机构：

[Xia, Yang; Ho, Wingkei] Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong 999077, Peoples R China.

[Xia, Yang; Ho, Wingkei] Educ Univ Hong Kong, Ctr Environm & Sustainable Dev CESD, Tai Po, Hong Kong 999077, Peoples R China.

[Zhu, Bicheng; Yu, Jiaguo; Yu, JG] China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, Wuhan 430074, Peoples R China.

[Xia, Yang] Wuhan Inst Technol, Sch Chem Engn & Pharm, Minist Educ, Key Lab Green Chem Proc, Wuhan 430205, Peoples R China.

[Ho, Wingkei] City Univ Hong Kong, State Key Lab Marine Pollut, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China.

通讯机构：

[Ho, WK ] E

[Yu, JG ] C

Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong 999077, Peoples R China.

Educ Univ Hong Kong, Ctr Environm & Sustainable Dev CESD, Tai Po, Hong Kong 999077, Peoples R China.

China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, Wuhan 430074, Peoples R China.

语种：

英文

关键词：

Hierarchical porous;Nitrogen vacancies;Charge channels;NOx removal

期刊：

Applied Catalysis B: Environmental

ISSN：

0926-3373

年：

2024

卷：

344

页码：

123604

DOI：

10.1016/j.apcatb.2023.123604

基金类别：

CRediT authorship contribution statement Yang Xia: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft. Heng Yang: Data curation, Formal analysis, Investigation. Wingkei Ho: Conceptualization, acquisition, Methodology, Supervision, Writing – review & editing. Bicheng Zhu: Data curation, Formal analysis, Investigation. Jiaguo Yu: Conceptualization, acquisition, Supervision, Writing – review & editing.

机构署名：

本校为其他机构

院系归属：

化学与环境工程学院

摘要：

Sluggish charge kinetics and moderate adsorption-desorption ability of gas molecules are major limitations for photocatalytic NOx elimination of bulk g-C3N4. A hierarchical porous g-C3N4 photocatalyst modified with N vacancies and charge channels (KCNN) was prepared by thermal polymerisation in KCl medium followed by quenching to increase the photocatalytic efficiency. The optimized KCNN sample exhibits highly enhanced photocatalytic NO removal rate (70.5%), which is superior to those of bulk g-C3N4 (38.1%), porous g-C3N4 (54.5%) and K-doped g-C3N4 (58.6%), respectively. X-ray photoelectron sp...

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Promoting the photocatalytic NO oxidation activity of hierarchical porous g-C3N4 by introduction of nitrogen vacancies and charge channels

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