A direct Z-scheme Bi2WO6/La2Ti2O7 photocatalyst for selective reduction of CO2 to CO

IF 10.3 4区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

结构化学 Pub Date : 2023-04-01 DOI:10.1016/j.cjsc.2022.100010

Jianxiong Chen, Lichao Lin, Peiling Lin, Lujiang Xiao, Lingqian Zhang, Ying Lu, Wenyue Su

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引用次数: 3

Abstract

Simulating photosynthesis to convert CO₂ into valuable chemicals is an effective strategy to achieve sustainable carbon recycles, and the high conversion efficiency and selectivity of photocatalytic conversion CO₂ to specific chemicals are the key challenges. Herein, a direct Z-scheme Bi₂WO₆/La₂Ti₂O₇ photocatalyst is successfully synthesized by electrostatic self-assembly method. The selectivity of CO₂ reduction to CO is improved from 74% of La₂Ti₂O₇ to nearly 100%, and the CO yield is 7.5 times that of individual La₂Ti₂O₇. The improvement of the photocatalytic performance is attributed to the formation of Z-scheme heterojunction between Bi₂WO₆ and La₂Ti₂O₇, which facilitates the separation and transfer of photogenerated carriers. This work provides a new insight for the construction of efficient photocatalyst for selective reduction of CO₂ to CO.

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直接z -方案Bi2WO6/La2Ti2O7光催化剂选择性还原CO2为CO

模拟光合作用将CO2转化为有价值的化学物质是实现可持续碳回收的有效策略，而光催化将CO2转化成特定化学物质的高转化效率和选择性是关键挑战。本文采用静电自组装方法成功合成了直接Z型Bi2WO6/La2Ti2O7光催化剂。CO2还原为CO的选择性从La2Ti2O7的74%提高到近100%，CO产率是单个La2Ti2O7的7.5倍。光催化性能的提高归因于Bi2WO6和La2Ti2O7之间形成Z型异质结，这有利于光生载流子的分离和转移。这项工作为构建用于选择性将CO2还原为CO的高效光催化剂提供了新的见解。

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来源期刊

结构化学化学-晶体学

CiteScore

4.70

自引率

22.70%

发文量

5334

审稿时长

13 days

期刊介绍： Chinese Journal of Structural Chemistry “JIEGOU HUAXUE ”, an academic journal consisting of reviews, articles, communications and notes, provides a forum for the reporting and discussion of current novel research achievements in the fields of structural chemistry, crystallography, spectroscopy, quantum chemistry, pharmaceutical chemistry, biochemistry, material science, etc. Structural Chemistry has been indexed by SCI, CA, and some other prestigious publications.