C-doped BiOCl/Bi2S3 heterojunction for highly efficient photoelectrochemical detection and photocatalytic reduction of Cr(VI)

被引：45
|
作者：
Wang, Chunli [1 ,2 ]
Liu, Nazhen [2 ]
Zhao, Xia
Tian, Yong [3 ]
Chen, Xuwei [1 ]
Zhang, Yanfeng [4 ]
Fan, Liang [2 ]
Hou, Baorong [2 ]
机构：
[1] Northeastern Univ, Coll Sci, Res Ctr Analyt Sci, Dept Chem, Shenyang 110819, Peoples R China
[2] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
[3] Qingdao Univ Technol, Sch Environm & Municipal Engn, Qingdao 266033, Peoples R China
[4] Sichuan Police Coll, Intelligent Policing Key Lab Sichuan Prov, Luzhou 646000, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2023年 / 164卷
基金：
中国国家自然科学基金;
关键词：
C-BiOCl; Dual; -functional; Photoelectrochemical detection; Photocatalytic reduction; Cr(VI); ENHANCED PERFORMANCE; ORGANIC FRAMEWORKS; DEGRADATION; NANOSHEETS; SYSTEM;
D O I：
10.1016/j.jmst.2023.03.066
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel C-BiOCl/Bi2S3 composites are prepared by hydrothermal C doping in BiOCl and in-situ growth of Bi2S3 on C-BiOCl. Compared with BiOCl, C-BiOCl has a larger exposed surface area and can effectively absorb visible light. The construction of a heterojunction in C-BiOCl/Bi2S3 further promotes the sepa-ration and transfer of photogenerated carriers. With improved photoelectric properties, the optimized 5C-BiOCl/5Bi2S3 is applied as a dual-functional composite for photoelectrochemical (PEC) detection and photocatalytic (PC) reduction of Cr(VI). The 5C-BiOCl/5Bi2S3 shows a linear range of 0.02-80 & mu;M for PEC cathodic detection of Cr(VI) with a detection limit of 0.01628 & mu;M. Additionally, 99.5% of Cr(VI) can be removed via absorption and PC reduction by 5C-BiOCl/5Bi2S3, with the reduction rate constant ( k ) 336 times higher than that of BiOCl.& COPY; 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：188 / 197
页数：10
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