Ag3PO4/g-C3N4异质结催化剂可见光降解黄连素

doi:10.19964/j.issn.1006-4990.2021-0398

Abstract

Abstract:

Ag₃PO₄/g-C₃N₄ heterojunction catalyst was synthetized by in-situ growth method,and under visible light emission,the degradation of medicine macromolecular berberine in wastewater was catalyzed oxidation.The composition and structure of the catalyst were analyzed by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,X-ray photoelectron spectroscopy（XPS） and ultraviolet visible diffuse reflectance spectroscopy（UV-vis DRS）.The photocatalytic activity of Ag₃PO₄/g-C₃N₄for the degradation of berberine was tested.The results showed that when the doping amount of g-C₃N₄ was 0.7 g,the photocatalytic degradation activity of Ag₃PO₄/g-C₃N₄ for berberine was the best under visible light irradiation.The degradation rate reached 100% after 15 min of visible light reaction.After four repeated experiments,the degradation rate was decreased to 73.2%,which had good light stability.Free radical capture experiments showed that h⁺ and ·O₂ ^- played major role in the degradation of berberine wastewater.Combined with UV-vis DRS analysis,Ag₃PO₄/g-C₃N₄ followed the Z-type heterojunction mechanism.

Key words: in situ growth method, Ag₃PO₄/g-C₃N₄, visible light, berberine, photodegradation

CLC Number:

O643.36

JI Chang,WANG Guosheng. Degradation of berberine by visible light over Ag₃PO₄ /g-C₃N₄ heterojunction catalyst[J]. Inorganic Chemicals Industry, 2022, 54(4): 175-180.

Figures/Tables 8

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References 28

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Degradation of berberine by visible light over Ag₃PO₄ /g-C₃N₄ heterojunction catalyst

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Degradation of berberine by visible light over Ag3PO4 /g-C3N4 heterojunction catalyst