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Z-scheme heterojunction of Bi2S3/g-C3N4 and its photocatalytic effect

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Title Z-scheme heterojunction of Bi2S3/g-C3N4 and its photocatalytic effect
 
Creator Meng, Yachu
Li, Yuzhen
Xia, Yunsheng
Chen, Wenjun
 
Subject Bi2S3/g-C3N4
Photocatalysis
Wet impregnation calcination method
Z-scheme
 
Description 128-138
In this study, Bi2S3/g-C3N4 binary catalyst has been excellently prepared by a wet impregnation-calcination method to form
Z-scheme heterojunction. The catalyst has been characterized by X-ray diffraction (XRD), transmission electron microscopy
(TEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-DRS) and photoluminescence spectroscopy (PL). The
physicochemical properties of the catalyst have been tested, such as crystal structure, morphology, optical properities, light
absorption properties and luminescence properties. The results demonstrate that the photocatalytic activity is significantly
increased when Bi2S3 with optimum weight percentage (5wt%) loaded into g-C3N4. Through photocatalytic degradation
experiments, the optimal loading ratio, dosage and dye concentration of binary materials have been explored. At the same time,
the effect of pH on the photocatalytic experiment under the optimal conditions is studied. Reactive blue 19 (RB19) is degraded
by 97.77% in 2 h as the target pollutants. The trapping experiment further verified that ꞏO2
- is the main active species in
photocatalytic degradation of RB19.
 
Date 2022-05-17T10:43:52Z
2022-05-17T10:43:52Z
2022-03
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/59734
 
Language en
 
Publisher CSIR-NIScPR, India
 
Source IJCT Vol.29(2) [March 2022]