期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 24, 页码 20404-20411出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b02984
关键词
CdS/Cu7S4/g-C3N4; noble metal-free; photocatalytic hydrogen production; visible light; ternary heterostructures
资金
- National Natural Science Foundation of China [21471039, 21571043, 21671047]
- Fundamental Research Funds for the Central Universities (PIRS of HIT) [A201502, HIT. BRETIII. 201223]
- China Postdoctoral Science Foundation [2014M560253]
- Postdoctoral Scientific Research Fund of Heilongjiang Province [LBH-Q14062, LBH-Z14076]
- Natural Science Foundation of Heilongjiang Province [B2015001]
Hydrogen production through photocatalytic water splitting has attracted much attention because of its potential to solve the issues of environmental pollution and energy shortage. In this work, CdS/Cu7S4/g-C3N4 ternary heterostructures are fabricated by ion exchange between CdS and Cu+ and subsequent ultrasonication-assisted self-assembly of CdS/Cu2S4 and g-C3N4, which provide excellent visible-light photocatalytic activity for hydrogen evolution without any noble metal cocatalyst. With the presence of p-n junction, tuned band gap alignments, and higher charge carrier density in the CdS/Cu7S4/g-C3N4 ternary heterostructures that can effectively promote the spatial separation and prolong the lifetime of photo generated electrons, a high hydrogen evolution rate of 3570 mu mol(-1) g(-1) h(-1), an apparent quantum yield of 4.4% at 420 nm, and remarkable recycling stability are achieved. We believe that the as-synthesized CdS/Cu7S4/g-C3N4 ternary heterostructures can be promising noble metal-free catalysts for enhanced hydrogen production from photocatalytic water splitting.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据