纳米棒
异质结
光致发光
材料科学
钙钛矿(结构)
光电子学
电子顺磁共振
纳米晶
卤化物
人工光合作用
纳米技术
光催化
化学工程
化学
物理
无机化学
催化作用
核磁共振
生物化学
工程类
作者
Zhijie Zhang,Zhongliang Dong,Ying Jiang,Yaoqing Chu,Jiayue Xu
标识
DOI:10.1016/j.cej.2022.135014
摘要
Construction of S-scheme heterojunctions has been regarded as an appealing strategy to explore efficient photocatalysts for artificial photosynthesis. Herein, a unique 0D/1D S-scheme heterojunction of CsPbBr3/AgBr (CPB/AgBr) was developed by assembling CsPbBr3 nanocrystals (NCs) onto AgBr nanorods. The effective S-scheme electron transfer between CsPbBr3 and AgBr boosted charge separation while also maintained the strongly reductive electrons for CO2 reduction, as proved by electron spin resonance (ESR), steady state photoluminescence (PL), time-resolved photoluminescence (TRPL), etc. As a consequence, The CPB/AgBr heterojunction achieved remarkable photocatalytic performance in CO2 reduction, with a high electron consumption rate (Relectron) of 141.4 μmol g−1h−1, which was 3.0 times that of pristine CsPbBr3 and 1.65 times that of AgBr, respectively. The current work presents a novel lead halide perovskite (PVK) based S-scheme heterojunction, which is expected to provide some insights into the development of new efficient photocatalysts based on PVKs for solar fuel applications.
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