ZHANG Ning1， FENG Jingshu2, YANG Qianqian1， YAN Tao1
(1. School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China;2. Shandong Gelaimei Environmental Protection Technology Co., Ltd., Jinan 250117, China)
Abstract: Co9S8 nanoparticles were loaded on one-dimensional CdS nanorods through solvothermal method to form a one-dimensional heterojunction structure for photocatalytic hydrogen production. Combining the characterization of XRD, SEM, and UV-Vis DRS, the composition, microstructure, and optical properties of the material were studied.Then the photocatalytic properties were tested. The results showed that when the loading of Co9S8 was 10% of the mass of CdS, the composite had the best hydrogen production rate of 18.72 mmol·g-1·h-1, which was about 16 times that of CdS.In addition, the composite also showed good cycle stability, and the performance did not decrease significantly in the continuous 12-hour photocatalytic hydrogen production test. Finally, the charge transfer mechanism of the material was discussed. Based on the analysis of the characterization results of transient photocurrent, EIS and PL, it was concluded that the composite CdS-Co9S8 one-dimensional heterojunction structure can significantly improve the migration and separation efficiency of photogenerated electron-hole pairs, thereby it had excellent performance of photocatalytic hydrogen production.
Keywords: CdS; Co9S8; one-dimensional material; photocatalytic hydrogen production
中图分类号： O643
文献标志码：A
文章编号：1008-5548(2021)03-0073-07
DOI:10.13732/j.issn.1008-5548.2021.03.010
收稿日期： 2020-12-24，修回日期：2021-01-25，在线出版时间：2021-04-07 14:03。
基金项目：山东省自然科学基金，编号：ZR2020MB091。
第一作者简介：张宁(1994—)，男，硕士研究生，研究方向为光催化分解水产氢。E-mail：zhangningrr@163.com。
通信作者简介：闫涛(1980—)，男，博士，副教授，硕士生导师，研究方向为环境功能材料。E-mail： yantujn@163.com。
