光催化
还原(数学)
材料科学
化学工程
方案(数学)
纳米技术
化学
催化作用
数学
工程类
有机化学
数学分析
几何学
作者
Ziheng Song,Shushan Song,Weijie Zhang,Hui-Lin Han,Kai Wei,Dandan Liu,Qianyu Wang,Changchang Ma,Sheng Feng
出处
期刊:Fuel
[Elsevier]
日期:2024-06-01
卷期号:366: 131154-131154
被引量:1
标识
DOI:10.1016/j.fuel.2024.131154
摘要
a simple electrostatic self-assembly method is adopted, in which the Z-scheme heterojunction is directly constructed with Sn-Bi-MOF (SBM) using g-C3N4 (pCN) as the support platform, and the Mott Schottky junction is introduced into the heterojunction (pCN/TC/SBM). This structure not only achieves efficient and stable CO2 conversion, besides has a high degree of selectivity for CO due to the enhanced electrodynamic migration. Under simulated sunlight, pCN/TC/SBM showed high photocatalytic activity, and the amount of CO produced was 36.33 μmol·g−1·h−1, which was 4.36 and 3.5 times that of pCN and SBM, respectively, and the quantum apparent efficiency (AQY) was 3.2 % at 420 nm. The design method not simply improves the separation of electron-hole pairs, moreover accelerates the electrodynamic migration process, which increases the yield and improves the selectivity for CO. UPS, XPS, VB, DRS, ESR and work functions were used to analyze the Fermi level arrangement and band bending of the catalyst, and the photocatalytic mechanism and electron migration path were speculated. In situ FTIR is used to illustrate the specific path of the reaction. This work provides a new strategy for the design of heterojunctions and the enhancement of the yield and selectivity of carbon dioxide reduction products.
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