光催化
材料科学
碳纤维
钴
电子
间隙
量子产额
制氢
纳米技术
金属
化学工程
氢
催化作用
光电子学
光化学
光学
有机化学
化学
复合材料
复合数
荧光
泌尿科
冶金
医学
量子力学
物理
工程类
作者
Yunxiang Li,Shengyao Wang,Pei Wang,Yu He,Xusheng Wang,Kun Chang,Huiwen Lin,Xing Ding,Hao Chen,Hongwei Zhang,Yasuo Izumi,Tetsuya Kako,Jinhua Ye
出处
期刊:Nano Energy
[Elsevier]
日期:2020-10-01
卷期号:76: 105077-105077
被引量:27
标识
DOI:10.1016/j.nanoen.2020.105077
摘要
Creation of clean interfaces without contamination of adventitious carbon and robust single active sites are highly desirable for delivery and utilization of electrons in sunlight-driven hydrogen production but still remains challenging in part owing to the lack of understanding in junction nature. Herein, we tackle this challenge by targeted removing of interfacial adventitious carbon between photoharvester CdS and novel single-cobalt co-catalyst (Co-NC). It's found that surface-trapped electrons can readily migrate to the closely attached Co-NC across the cleared interface between CdS and Co-NC. The small-resistance interfacial carrier path and the robust single-cobalt sites work in a cooperative way and hence achieve a superior visible-light driven H2 generation activity with a rate of 4.34 mmol/h, an apparent quantum yield (AQY) of 63.9% at 400 nm and a ultrahigh turnover frequency (TOF) of up to 16714.7 h−1. Our finding will motivate future work in creating clean interfaces and unique single active sites for high performance photocatalysis.
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