College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
Shanghai Non-Carbon Energy Conversion and Utilization Institute, Shanghai, China.
Dalton Trans. 2023 May 16;52(19):6375-6387. doi: 10.1039/d3dt00819c.
The photocatalytic reduction of CO to hydrocarbons is expected to simultaneously alleviate the energy crisis and greenhouse effect. Herein, the ternary BiOCl/C/CuO catalysts with different mass ratios were compounded using a simple hydrothermal method, revealing better photocatalytic activity than the monomer. In the absence of sacrificial agents and photosensitizers, 25% BiOCl/C/CuO showed optimal photocatalytic performance. The CO and CH yields over 25% BiOCl/C/CuO reached 26.77 and 9.86 μmol g h, which is 2.9 and 8.7 times higher than that of the pristine CuO, respectively. The ameliorative activity can be attributed to the construction of the Z-scheme heterostructure and carbon layer, which are conducive to the transfer and separation of photogenerated carriers. This study offers valuable references for the design and investigation of a Z-scheme heterojunction using a carbon layer as an electron transfer medium.
光催化还原 CO 为碳氢化合物有望同时缓解能源危机和温室效应。在此，采用简单的水热法合成了不同质量比的三元 BiOCl/C/CuO 催化剂，其光催化活性优于单体。在没有牺牲剂和光敏剂的情况下，25%BiOCl/C/CuO 表现出最佳的光催化性能。25%BiOCl/C/CuO 的 CO 和 CH 产率分别达到 26.77 和 9.86 μmol g h，分别是原始 CuO 的 2.9 和 8.7 倍。改善的活性可归因于 Z 型异质结和碳层的构建，这有利于光生载流子的转移和分离。本研究为设计和研究以碳层作为电子传输介质的 Z 型异质结提供了有价值的参考。
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