Noble-Metal-Free Bi/g-C3N4 Nanohybrids for Efficient Photocatalytic CO2 Reduction under Simulated Irradiation
Noble-Metal-Free Bi/g-C3N4 Nanohybrids for Efficient Photocatalytic CO2 Reduction under Simulated Irradiation
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DOI：
10.1021/acs.energyfuels.1c00439
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发表时间：
2021-05-27
期刊：
影响因子：
5.3
通讯作者：
Pan, Wei-guo
中科院分区：
文献类型：
--
作者：
Gu, Jing-wen;Guo, Rui-tang;Pan, Wei-guo
在本研究中，通过一步溶剂热法构建了双金属沉积g-C3N4的肖特基结光催化剂，用于模拟辐照下光催化CO2还原。光催化性能表明，纳米杂化催化剂具有极强的活性和优异的稳定性。bbin -0.6的CO产量最高可达3.78 μ mol h(-1) g(-1)，是纯g- c3n4的3倍左右。通过相关表征方法验证了材料的物相、微观结构、光学和电化学性能。改善的机制可归因于系统中肖特基势垒引起的光子吸收能力增强和光致载流子复合速率降低。这项工作可能为通过简单和绿色的策略提高光催化活性提供了有意义的途径。
In this study, novel Schottky-junction photocatalysts Bi-metal-deposited g-C3N4 were constructed via a one-step solvothermal process for photocatalytic CO2 reduction under simulated irradiation. The photocatalytic performance illustrated that the nanohybrid catalysts have extreme activity and excellent stability. The maximum CO yield of 3.78 mu mol h(-1) g(-1) was reached on the BiCN-0.6 hybrid, which was about 3 times as much as that of pure g-C3N4. The phase, microstructure, and optical and photo-electrochemical properties were demonstrated by related characterization methods. The improvement mechanism could be ascribed to the enhanced photon absorption capacity and the decreased recombination rate of photoinduced carriers arising from the Schottky barrier in the system. This work may provide a meaningful approach to enhance the photocatalytic activity through a simple and green strategy.