Novel visible-light irradiation niobium-doped BiOBr microspheres with enhanced photocatalytic performance

被引：18
|
作者：
Wei, Zhiping [1 ]
Dong, Xiaoli [1 ]
Zheng, Nan [1 ]
Wang, Yu [1 ]
Zhang, Xiufang [1 ]
Ma, Hongchao [1 ]
机构：
[1] Dalian Polytech Univ, Sch Light Ind & Chem Engn, 1 Qinggongyuan, Dalian 116034, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2020年 / 55卷 / 35期
基金：
中国国家自然科学基金;
关键词：
Z-SCHEME PHOTOCATALYST; DEGRADATION; HETEROSTRUCTURE; NANOSHEETS; FABRICATION; NANOCOMPOSITES; NANOSPHERES; REMOVAL; G-C3N4;
D O I：
10.1007/s10853-020-05265-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of niobium-doped BiOBr (Nb-BiOBr) were successfully synthesized via hydrothermal method. Moreover, the morphology structure and optical property of BiOBr and Nb-BiOBr samples were determined using various characterization techniques including SEM, TEM, EDS, BET, XRD, XPS and DRS, etc. The photocatalytic performance of Nb-BiOBr was deeply investigated with the rhodamine B and ofloxacin degradation under visible-light irradiation as model reaction. The results showed that Nb-BiOBr samples depicted the outstanding photocatalytic performance, especially for the 1.25Nb-BiOBr. Moreover, its reaction kinetic constant was ca. 6.4 times higher than that of undoped BiOBr. The observed photocatalytic performance could be attributed to the strong light absorption, enhanced separation efficiency of charge carriers as well as high specific surface area. Meanwhile, 1.25Nb-BiOBr demonstrated stability in RhB degradation, thereby facilitating the water treatment application.
引用
收藏
页码：16522 / 16532
页数：11
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