Enhanced photothermal catalysis for CO_(2) reduction with H_(2)O by amphoteric metal oxides modified TiO_(2)  

作　　者：Wenhui Huang Li Zhang Jianan Hong Hongfen Mo Chenyu Xu Yanwei Zhang 

机构地区：[1]State Key Laboratory of Clean Energy Utilization,Department of Energy Engineering,Zhejiang University,Hangzhou,310027,China

出　　处：《Waste Disposal and Sustainable Energy》2024年第3期309-321,共13页废弃物处置与可持续能源（英文）

基　　金：financially supported by National Natural Science Foundation of China(No.51976190);the Zhejiang Provincial Natural Science Foundation(No.LR18E060001).

摘　　要：Due to competitive adsorption between CO_(2) and H_(2)O,hydrogen evolution reaction reacts easily in the photothermal CO_(2) reduction.Herein,the amphoteric oxide loaded on TiO_(2) catalyst was prepared to enhance CO_(2) adsorption as well as improve the photo-responsive properties.The samples with 10% mass fraction of ZnO loaded on TiO_(2) exhibited the best photothermal catalytic performance.The average yields of H_(2),CO and CH4 were estimated to be 35.7,43.5,and 5.7μmol/(g·h),respectively.Also,the selectivity of carbon-containing products increased from 28.9% to 48.8% when compared to P25.The loading of amphoteric oxides can act as adsorption sites on the material surface to adsorb acidic molecules of CO_(2) for reaction,improving the selectivity of carbon-containing products.In addition,amphoteric oxides are good semiconductors,which can improve the photo-responsive properties of the catalyst and form heterostructures with TiO_(2) to promote the separation of photogenerated electron-hole pairs,allowing more photo-generated carriers to participate in the reaction.Finally,both functions including CO_(2) adsorption and solar light absorption could be realized on the all-in-one amphoteric oxide loaded on TiO_(2) component.

关 键 词：Solar fuels PHOTOTHERMAL H_(2)O CO_(2)reduction ZnO 

分 类 号：O64[理学—物理化学]