文献类型：期刊文献

英文题名：Dual-Site NiO/Bi3O4Br Heterojunction Catalyst for High-Efficiency CO2-to-CH4 Conversion

作者：Jiang, Wenhan[1,2];He, Yiling[1,2];Zhu, Xinxin[1,2];Liu, Yu[1,2];Zhou, Yanbo[3];Zhou, Yi[1,2]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]Minist Educ, Engn Res Ctr Resource Utilizat Carbon containing W, Shanghai 200237, Peoples R China;[3]Jinggangshan Univ, Sch Life Sci, Key Lab Jiangxi Prov Funct Biol & Pollut Control R, Jian 343009, Peoples R China

年份：2025

卷号：17

期号：4

外文期刊名：CHEMCATCHEM

收录：;EI(收录号：20244717375762);WOS:【SCI-EXPANDED(收录号:WOS:001358058700001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 22376065), the Science and Technology Commission of Shanghai Municipality (No. 22ZR1418600), and Shanghai Municipal Science and Technology (No. 20DZ2250400).

语种：英文

外文关键词：Bi3O4Br; CO2 photoreduction; Dual-site reaction; Methanation; Z-scheme heterojunction

摘要：Solar light-driven conversion of CO2 into chemicals with high calorific value is regarded as an upcoming carbon utilization technology for alleviating the energy crisis. This technique faces the challenge of low CO2 conversion and product yield due to charge recombination in the catalyst. In this paper, a dual-reaction site heterojunction catalyst was designed and fabricated by combining NiO with Bi3O4Br nanosheets, for the separation of CO2 reduction and H2O oxidation semireactions, which effectively promoted electrons and holes separation. The resulting catalyst exhibited a high CH4 production rate (8.12 mu mol/g) and selectivity (94.69%). Electron distribution and band structure were investigated to explain the satisfactory catalytic performance. In addition, combining the in-situ DRIFTS results, a formic acid-intermediated CO2-to-CH4 reaction pathway was proposed. This work aims to pave the way for CH(4 )production via CO2 photoreduction with high efficiency and selectivity.