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Facile Preparation of Hierarchically Porous g‐C 3 N 4 as High‐Performance Photocatalyst for Degradation of Methyl Violet Dye
Author(s) -
Ni Jing,
Wang Yating,
Liang Honghong,
Kang Yuanhong,
Liu Bichan,
Zhao Ruihua,
Wang Yuan,
Shuai Xiaofeng,
Shang Yangyang,
Du Jianping,
Li Jinping
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101464
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , materials science , graphitic carbon nitride , scanning electron microscope , methyl violet , degradation (telecommunications) , transmission electron microscopy , chemical engineering , lamellar structure , porosity , nuclear chemistry , catalysis , aqueous solution , nanotechnology , chemistry , composite material , organic chemistry , telecommunications , computer science , engineering
Porous Graphitic carbon nitride(pg‐C 3 N 4 ) possessing hierarchical pores and lamellar nanostrucutres was synthesized in the absent of templates by pyrolysis of the solution‐assisted mixing dual‐precursors. The samples were characterized by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, N 2 porosimeter, X‐ray photoelectron spectroscopy, UV‐Vis andphotoluminescence spectroscopy.The photocatalytic activities of as‐prepared materials for degradation of methyl violet were studied. The results show that the as‐prepared g‐C 3 N 4 consists of well‐dispersed layers with uniform sizeand hierarchical (Meso/Macro) pores in the nanosheets, which favor photogenerated electron‐hole pairs'separation, and the degradation of methyl violet conforms to the quasi‐first‐order kinetic model. The porous g‐C 3 N 4 synthesized by optimizing precursors’ ratios exhibited faster degradation rate than g‐CN material in the process of photocatalyzing methyl violet andthe degradation rate was over 93 % after irradiation of 180 min, implying that the as‐prepared hierarchically porous g‐C 3 N 4 is a high‐effective and metal‐free photocatalytic material for degradation of pollutants.