Zhang Yan, Wan Junfen, Zhang Chunjuan, Cao Xuejun
State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Rd., Shanghai, 200237, China.
Sci Rep. 2022 Feb 28;12(1):3261. doi: 10.1038/s41598-022-07126-2.
Photocatalytic hydrogen production as a technology to solve energy and environmental problems exhibits great prospect and the exploration of new photocatalytic materials is crucial. In this research, the ternary composite catalyst of MoS/FeO/g-CN was successfully prepared by a hydrothermal method, and then a series of characterizations were conducted. The characterization results demonstrated that the composite catalyst had better photocatalytic performance and experiment results had confirmed that the MoS/FeO/g-CN composite catalyst had a higher hydrogen production rate than the single-component catalyst g-CN, which was 7.82 mmol g h, about 5 times higher than the catalyst g-CN (1.56 mmol g h). The improvement of its photocatalytic activity can be mainly attributed to its enhanced absorption of visible light and the increase of the specific surface area, which provided more reactive sites for the composite catalyst. The successful preparation of composite catalyst provided more channels for carrier migration and reduced the recombination of photogenerated electrons and holes. Meanwhile, the composite catalyst also showed higher stability and repeatability.
光催化制氢作为一种解决能源和环境问题的技术具有广阔前景，探索新型光催化材料至关重要。本研究通过水热法成功制备了MoS/FeO/g-CN三元复合催化剂，随后进行了一系列表征。表征结果表明该复合催化剂具有较好的光催化性能，实验结果证实MoS/FeO/g-CN复合催化剂的产氢率高于单组分催化剂g-CN，其产氢率为7.82 mmol g h，约为催化剂g-CN（1.56 mmol g h）的5倍。其光催化活性的提高主要归因于可见光吸收增强和比表面积增大，为复合催化剂提供了更多活性位点。复合催化剂的成功制备为载流子迁移提供了更多通道，减少了光生电子和空穴的复合。同时，复合催化剂还表现出较高的稳定性和重复性。
