异质结
光催化
材料科学
贵金属
复合数
制氢
热液循环
载流子
复合材料
化学工程
金属
氢
催化作用
光电子学
冶金
化学
有机化学
工程类
生物化学
作者
Hong Qiu,Xiaohui Ma,Hongxia Fan,Yueyan Fan,Yanyan Li,Hualei Zhou,Wenjun Li
出处
期刊:Molecules
[MDPI AG]
日期:2023-03-09
卷期号:28 (6): 2508-2508
标识
DOI:10.3390/molecules28062508
摘要
Molybdenum-based cocatalyst being used to construct heterojunctions for efficient photocatalytic H2 production is a promising research hotspot. In this work, CdIn2S4 was successfully closely supported on bulk Mo2C via the hydrothermal method. Based on their matching band structures, they formed a Type Ⅰ heterojunction after the combination of Mo2C (1.1 eV, -0.27 V, 0.83 V) and CdIn2S4 (2.3 eV, -0.74 V, 1.56 V). A series of characterizations proved that the heterojunction composite had higher charge separation efficiency compared to a single compound. Meanwhile, Mo2C in heterojunction could act as an active site for hydrogen production. The photocatalytic H2 production activity of the heterojunction composites was significantly improved, and the maximum activity was up to 1178.32 μmmol h-1 g-1 for 5Mo2C/CdIn2S4 composites. 5Mo2C/CdIn2S4 heterojunction composites possess excellent durability in three cycles (loss of 6%). Additionally, the mechanism of increased activity for composites was also investigated. This study provides a guide to designing noble-metal-free photocatalyst for highly efficient photocatalytic H2 evolution.
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