CuxO/Bi/Bi2WO6/BiOCl光热催化降解甲苯

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摘要合成了具有紧密界面的Ⅱ型与Z型复合异质结光热催化剂Cu_xO/Bi/Bi₂WO₆/BiOCl.结果表明,基于多组分复合异质结上组分Bi纳米颗粒的表面等离子体共振效应、独特的多通道光生电荷传递与分离路径和适宜的用于产生活性自由基的氧化还原电位, Cu_xO/Bi/Bi₂WO₆/BiOCl展现出宽光响应范围、强光吸收、高效光生电荷分离性能和光热协同产含氧活性基团的性能、优异的光热协同催化净化甲苯的性能.在90℃加热耦合光(300mW/cm², λ=200~2500nm)照射下, Cu_xO/Bi/Bi₂WO₆/BiOCl可在0.5h将甲苯气(0.0005%)完全矿化,优于相近条件下文献报道的结果.

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	方红莉
	陈佳怡
	曾文晶
	吴素芹
	张淼淼
	袁少棠
	芮泽宝

关键词 ： VOCs, II型异质结, Z型异质结, 光热协同催化, 电荷传递

Abstract：Type II and Z scheme complex heterojunction Cu_xO/Bi/Bi₂WO₆/BiOCl with tight interfaces was synthesized. Based on the surface plasmon resonance effect of the component Bi nanoparticles, unique photogenerated charge transfer and separation route, and suitable redox potential for active oxygen species production, Cu_xO/Bi/Bi₂WO₆/BiOCl exhibited wide light response range, strong light absorption, and efficient photogenerated charge separation and active oxygen species production properties. Multicomponent complex heterojunction Cu_xO/Bi/Bi₂WO₆/BiOCl demonstrated excellent photothermal synergistic catalytic toluene degradation performance. Under 90℃ coupling light (300mW/cm², λ=200~2500nm) irradiation, 0.0005% of toluene was completely mineralized on Cu_xO/Bi/Bi₂WO₆/BiOCl in 0.5h, ranging among the best performance of the reported photothermal catalysts under similar conditions.

Key words： VOCs Type II heterojunction Type Z heterojunction photothermal synergistic catalysis charges transport

收稿日期: 2022-10-24

PACS:

X511

基金资助:国家自然科学基金资助项目(21776322);广东省自然科学基金杰出青年基金项目(2022B1515020098)

通讯作者: 芮泽宝,教授,ruizebao@mail.sysu.edu.cn E-mail: ruizebao@mail.sysu.edu.cn

作者简介: 方红莉(1996-),女,河南信阳人,中山大学博士研究生,主要从事VOCs光热催化净化研究.1466343638@qq.com

引用本文:

方红莉, 陈佳怡, 曾文晶, 吴素芹, 张淼淼, 袁少棠, 芮泽宝. Cu_xO/Bi/Bi₂WO₆/BiOCl光热催化降解甲苯[J]. 中国环境科学, 2023, 43(6): 2788-2797. FANG Hong-li, CHEN Jia-yi, ZENG Wen-jing, WU Su-qin, ZHANG Miao-miao, YUAN Shao-tang, RUI Ze-bao. Photothermal catalytic degradation of toluene by Cu_xO/Bi/Bi₂WO₆/BiOCl. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(6): 2788-2797.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2023/V43/I6/2788

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