期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 34, 页码 30786-30792出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b08109
关键词
bismuth vacancies; BiOBr; ultrathin nanosheets; electronic structure; CO2 photoreduction
资金
- National Natural Science Foundation of China [21676128, 21606113, 21576123]
- Singapore National Research Foundation under NRF RF award [MOE2016-T2-1-131, Tier 1 2017-T1-001-075, MOE2018-T3-1-002]
Surface defects in semiconductors have a significant role to tune the photocatalytic reactions. However, the dominant studied defect type is oxygen vacancy, and metal cation vacancies are seldom explored. Herein, bismuth vacancies are engineered into BiOBr through ultrathin structure control and employed to tune photocatalytic CO2 reduction. V-Bi-BiOBr ultrathin nanosheets deliver a high selective CO generation rate of 20.1 mu mol g(-1) h(-1) in pure water, without any cocatalyst, photosensitizer, and sacrificing reagent, roughly 3.8 times higher than that of BiOBr nanosheets. The increased CO2 reduction activity is ascribed to the tuned electronic structure, optimized CO2 adsorption, activation, and CO desorption process over V-Bi-BiOBr ultrathin nanosheets. This work offers new opportunities for designing surface metal vacancies to optimize the CO2 photoreduction performances.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据