A hybrid of CdS/HCa2Nb3O10 ultrathin nanosheets for promoting photocatalytic hydrogen evolution

被引：22
作者：
Xiong, Jinhua [1 ,2 ]
Jing, Kaiqiang [1 ]
Zou, Junhua [1 ]
Liang, Shijing [1 ]
Wu, Ling [1 ]
机构：
[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
[2] Longyan Univ, Coll Chem & Mat Sci, Longyan 364000, Peoples R China
来源：
DALTON TRANSACTIONS | 2017年 / 46卷 / 40期
基金：
中国国家自然科学基金;
关键词：
VISIBLE-LIGHT IRRADIATION; H-2; PRODUCTION; QUANTUM DOTS; CDS; COCATALYST; OXIDE; NANOCOMPOSITES; NANORODS; MOS2; CONSTRUCTION;
D O I：
10.1039/c7dt03027d
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A hybrid of CdS/HCa2Nb3O10 ultrathin nanosheets was synthesized successfully through a multistep approach. The structures, constitutions, morphologies and specific surface areas of the obtained CdS/HCa2Nb3O10 were characterized well by XRD, XPS, TEM/HRTEM and BET, respectively. The TEM and BET results demonstrated that the unique structural features of CdS/HCa2Nb3O10 restrained the aggregation of CdS nanoparticles as well as the restacking of nanosheets effectively. HRTEM showed that CdS nanocrystals of about 25-30 nm were firmly anchored on HCa2Nb3O10 nanosheets and a tough heterointerface between CdS and the nanosheets was formed. Efficient interfacial charge transfer from CdS to HCa2Nb3O10 nanosheets was also confirmed by EPR and photocurrent responses. The photocatalytic activity tests (lambda > 400 nm) showed that the optimal hydrogen evolution activity of CdS/HCa2Nb3O10 was about 4 times that of the bare CdS, because of the efficient separation of photo-generated carriers.
引用
收藏
页码：13935 / 13942
页数：8
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