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Efficient Photocatalytic Degradation of Pharmaceutical Pollutants Using Plasma‐Treated g‐C 3 N 4 /TiO 2 by Liu, Rui; Sun, Lizhi; Qiao, Yingjie; Bie, Yongchao; Wang, Peng; Zhang, Xiaohong; Zhang, Qiang is a Engineering article available to read on EtoBox.

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A series of oxygen plasma–treated g‐C~3~N~4~/TiO~2~ nanotubes are prepared, which exhibit excellent photocatalytic performance for degrading pharmaceutical pollutants under simulated solar light irradiation. The structure and optical properties of photocatalysts are characterized using scanning electron microscope, transmission electron microscopy, X‐ray diffraction, UV–vis, atomic force microscopy, and X‐ray photoelectron spectroscopy analyses. The g‐C~3~N~4~ nanoparticles are coated on the surface of TiO~2~ forming a heterojunction structure, which extends the light‐absorption region and inhibits the recombination of electrons with holes. Ibuprofen is used as a model pharmaceutical pollutant. The heterojunction structure allows the g‐C~3~N~4~/TiO~2~ high photocatalytic efficiency that is two times larger than that of TiO~2~ nanotubes. The efficiency of g‐C~3~N~4~/TiO~2~ is further enhanced by oxygen plasma treatment. The oxygen plasma–treated g‐C~3~N~4~/TiO~2~ exhibits a photocatalytic efficiency of 95% within 90 min, which is much larger than that of TiO~2~ nanotubes (28%), g‐C~3~N~4~ (52%), and g‐C~3~N~4~/TiO~2~ nanotubes (70%). The kinetics of the photocatalytic degradation ar

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Author

Liu, Rui; Sun, Lizhi; Qiao, Yingjie; Bie, Yongchao; Wang, Peng; Zhang, Xiaohong; Zhang, Qiang

Publisher

Wiley (John Wiley & Sons); Wiley - VCH Verlag GmbH & CO. KGaA; Wiley (ISSN 2194-4288)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)