文献类型：期刊文献

英文题名：Plasmonic active "hot carriers" facilitating photocatalytic CO₂ reduction and 2,4-dichlorophenol oxidation over Bi-deposited BiOBr with abundant oxygen vacancies

作者：Yang, Qiang[1] Tian, Qingwen[1,3] Li, Xiang[1] Zhu, Yawei[1] Fang, Guigan[1,2,3]

第一作者：Yang, Qiang

通信作者：Tian, QW[1];Tian, QW[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Key Lab Biomass Energy & Mat,Natl Engn Res Ctr Low, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Nanjing 210037, Peoples R China;[3]Guangxi Univ, Coll Light Ind & Food Engn, Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Peoples R China

年份：2024

卷号：332

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20240215348217);Scopus(收录号：2-s2.0-85181582670);WOS:【SCI-EXPANDED(收录号:WOS:001125708800001)】；

基金：The Project Supported by the National Key Research and Development Program of China (No. 2022YFC2105505) , the Foundation (No.2021KF13) of Guangxi Key Laboratory of Clean Pulp & Paper-making and Pollution Control, College of Light Industry and Food Engineering, Guangxi University and Taishan Industrial Experts Programme (tscy20200213).

语种：英文

外文关键词：Hot carriers; CO2 reduction; 4-DCP oxidation; Oxygen vacancies; Plasmonic Bi

摘要：Plasmon-induced semiconductors have attracted considerable interest in photocatalysis. Herein, this work de-scribes the tremendous potential of plasmonic photocatalysts in photocatalytic CO2 reduction and 2,4-DCP oxidation. BiOBr with high concentrations of plasmonic Bi and oxygen vacancies were synthesized by reduc-tive propylene glycol and lignin. Bi0.908O0.862Br exhibited excellent photocatalytic efficiency of CO2 reduction (CO: 62.94 mu mol g -1h-1) and 2,4-DCP oxidation (94.65 %), which was attributed to the surface plasmon reso-nance (SPR) effect based on the experiments and DFT theoretical simulation. As demonstrated, the SPR effect induced by plasmonic Bi and oxygen vacancies can not only rationally enlarge the light-responsive region, but also induce abundant "hot carriers" and photothermal effect, eventually lowering the energy barriers of pho-tocatalytic reactions. Meanwhile, a bulk-to-surface charge transfer channel was created to realize the high separation efficiency of photogenerated carriers. Moreover, plasmonic Bi and oxygen vacancies could act as adsorption sites to promote the activation of CO2 and O2 substrates. This work provides a new perspective for designing plasmonic photocatalysts to realize environmental remediation and energy conversion.