Fabrication and mechanism of a novel direct solid-state Z-scheme photocatalyst CdS/BiOI under visible light

被引：62
|
作者：
Song, Chengjie [1 ,2 ]
Feng, Yi [1 ]
Shi, Weidong [1 ]
Liu, Chunbo [1 ]
机构：
[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150000, Peoples R China
来源：
CRYSTENGCOMM | 2016年 / 18卷 / 40期
基金：
中国国家自然科学基金;
关键词：
HIGHLY EFFICIENT; HYDROGEN-PRODUCTION; HETEROJUNCTIONS; MICROSPHERES; COMPOSITES; NANOCOMPOSITES; PERFORMANCE;
D O I：
10.1039/c6ce01535b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A direct CdS/BiOI Z-scheme heterojunction has been successfully synthesized via a hydrothermal method for the first time. The photocatalytic performances of as-prepared samples were evaluated by rhodamine B degradation under visible light (lambda > 420 nm) irradiation. The phase structures, morphologies and optical properties of the obtained samples were investigated by several characterization tools such as XRD, SEM, TEM, HRTEM, STEM, XPS, and UV-vis, photocurrent and PL spectroscopy. The results revealed that the CdS/BiOI Z-scheme heterojunction exhibited much higher photocatalytic activity than pure BiOI and CdS, and the sample of CdS/BiOI-2 showed the best activity among all the heterostructure photocatalysts. In addition, the ESR spectrum indicated that. O-2(-) and e(-) were the main active species for the photocatalytic degradation of RhB in our experiment.
引用
收藏
页码：7796 / 7804
页数：9
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