Renewable WO3/Bi2O3 heterojunction for Photoelectrochemical and Visual Dual-mode Detection of Hydrogen Sulfide

被引：19
作者：
Wang, Jun [1 ]
Chen, Jiawei [1 ]
Liu, Fangyang [1 ]
Jia, Ming [1 ]
Zhang, Zongliang [1 ]
Liu, Min [2 ]
Jiang, Liangxing [1 ,3 ]
机构：
[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Cent South Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China
[3] Hunan Prov Key Lab Nonferrous Value added Met, Changsha 410083, Hunan, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2022年 / 369卷
基金：
中国国家自然科学基金;
关键词：
WO3/Bi(2)O(3 )heterojunction; Dual-mode detection; Hydrogen sulfide; Renewability; Value-added utilization; COLORIMETRIC ASSAY; PERFORMANCE; PHOTOCATALYST; DECOMPOSITION; POLLUTANTS; CONVERSION; DESIGN; PROBE; CO2;
D O I：
10.1016/j.snb.2022.132274
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The overexploitation and combustion of fossil fuels have caused serious hydrogen sulfide (H2S) pollution, which highlights the urgency for effective supervision. Herein, we report a renewable tungsten trioxide/bismuth oxide (WO3/Bi2O3) heterojunction for dual-mode photoelectrochemical (PEC) and visual determination of pernicious H2S. The spontaneous ion-exchange reaction induced partial transformation of Bi2O3 to Bi2S3 have made the "signal-on " PEC detection strategy available, while the obvious color difference from light cyan to khaki realizes the visual determination under high concentration. Correspondingly, the low limit of detection (LOD) of ca. 38 nM, the wide linear range for PEC (0.1-500 mu M) and visual (50 mu M -5 mM) detection mode, and exclusively unique selectivity are achieved. Besides, the already-used sensor exhibits rich added value for highly efficient water splitting, and the detection process can be re-implemented multiple times by a facile regeneration treatment, paves a user-friendly approach for the controllable monitor of H2S.
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页数：9
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