首页|Study on surface modification of g-C3N4 photocatalyst
Study on surface modification of g-C3N4 photocatalyst
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NSTL
Elsevier
? 2022 Elsevier B.V.g-C3N4 powders with different morphology and surface charged property were obtained by acidification, oxidation and exfoliation treatment of melamine. Acid treatment converts -NH2 group in melamine into -NH3NO3 group, and further oxidation reduces the existing C[sbnd]N[sbnd]H bond, promotes the formation of C[sbnd]N[sbnd]C and N[sbnd](C)3 bond in g[sbnd]C3N4, and ensures the formation of layered g-C3N4 structure; acid treatment and exfoliation were beneficial to increase the pore volume of g-C3N4 and enhance the redox ability of g-C3N4. The degradation rate of acid treated g-C3N4 to Rhodamine B in visible light was 3.13 times that of untreated g-C3N4, and the degradation rate of acid treated g-C3N4 to ciprofloxacin was 5.04 times that of untreated g-C3N4, further indicating that acid treated-oxidation-exfoliated treatment can improve the photocatalytic degradation effect of g-C3N4 and expand the application range of g-C3N4. The layered g-C3N4 with different surface charges can be selectively loaded onto the semiconductor materials with exposed active crystal surfaces, providing conditions for controllable preparation of Z-type heterojunction with enhanced redox ability.
Photocatalysisg-C3N4degradationredox ability
Liu Y.、Liu T.、Xia A.、Ren H.、Lv L.、Dong S.、Wang Y.、Tan G.、Dang M.
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School of Material Science and Engineering Shaanxi University of Science & Technology
School of Arts and Science Shaanxi University of Science & Technology
School of Electrical Engineering Xi'an Jiao Tong University
NSTL
Elsevier
