Direct Z‐Scheme Heterojunction of SnS<sub>2</sub>/Sulfur‐Bridged Covalent Triazine Frameworks for Visible‐Light‐Driven CO<sub>2</sub> Photoreduction
Shien Guo, Peng Yang, Yanfei Zhao, Xiaoxiao Yu, Yunyan Wu, Hongye Zhang, Bo Yu, Buxing Han, Michael W. George, Zhimin Liu
Abstract
Abstract Solar‐driven reduction of CO 2 into renewable carbon forms is considered as an alternative approach to address global warming and the energy crisis but suffers from low efficiency of the photocatalysts. Herein, a direct Z‐Scheme SnS 2 /sulfur‐bridged covalent triazine frameworks (S‐CTFs) photocatalyst (denoted as SnS 2 /S‐CTFs) was developed, which could efficiently adsorb CO 2 owing to the CO 2 ‐philic feature of S‐CTFs and promote separation of photoinduced electron–hole pairs. Under visible‐light irradiation, SnS 2 /S‐CTFs exhibited excellent performance for CO 2 photoreduction, yielding CO and CH 4 with evolution rates of 123.6 and 43.4 μmol g −1 h −1 , respectively, much better than the most catalysts reported to date. This inorganic/organic hybrid with direct Z‐Scheme structure for visible‐light‐driven CO 2 photoreduction provides new insights for designing photocatalysts with high efficiency for solar‐to‐fuel conversion.