光催化
碳纳米管
二氧化碳
空位缺陷
兴奋剂
材料科学
二氧化碳电化学还原
还原(数学)
化学工程
纳米技术
碳纤维
晋升(国际象棋)
化学
催化作用
复合材料
有机化学
光电子学
工程类
复合数
几何学
数学
一氧化碳
政治
政治学
法学
结晶学
作者
Min Wang,Jing Xie,Zhenjiang Lu,Fanlin Kong,Baolin Liu,Zhende Wu,Yali Cao
标识
DOI:10.1016/j.seppur.2024.127063
摘要
The structural devise of photocatalytic materials are closely related to the separation of photogenerated carriers and the transport of charge, which is crucial to enhance the performance of photocatalytic carbon dioxide reduction reaction (CO2RR). Here, a photocatalyst (CdS-SV@Co@NCNT) has been successfully prepared by growing cadmium sulfide nanoparticles with sulfur vacancies on N-doped carbon nanotubes through a simple solvothermal method. The intrinsic electronic structure is regulated by sulfur vacancies to promote photocatalytic activity. Meanwhile, a larger specific surface area of Co@NCNT could expose more reaction sites and shorten the transfer distance of photogenerated carriers. Furthermore, the combination with Co@NCNT could effectively suppress the photocorrosion of CdS. The possible photocatalytic CO2RR path is further speculated by in-situ infrared test results, in which CO2 molecules adsorbed on sulfur vacancies preferentially generate important intermediate COOH*, which is then reduced to CO and CH4. Therefore, it exhibits a high CO yield of 263.3 μmol·g−1·h−1 and trace of CH4 while showing excellent stability. This research provides a novel idea for designing the photocatalysts with highly active and stability for CO2RR.
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