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Soft‐Template Synthesis of Hybrid Carbon and Carbon Nitride Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue under Visible Light
Author(s) -
Li Yan,
Meng Meng,
Ji Chunnuan,
Teng Shuai,
Gao Luyao,
Qu Rongjun,
Yang Zhenglong,
Sun Changmei,
Zhang Ying
Publication year - 2019
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13186
Subject(s) - photodegradation , photocatalysis , materials science , thermogravimetric analysis , graphitic carbon nitride , carbon fibers , carbon nitride , methylene blue , x ray photoelectron spectroscopy , adsorption , chemical engineering , scanning electron microscope , catalysis , composite material , chemistry , organic chemistry , composite number , engineering
The porous hybrid carbon and carbon nitride composites (C/CN‐P123‐ x ) with higher adsorption capacity and improved photocatalytic activity for methylene blue (MB) degradation were obtained using partially formaldehyde‐modified dicyandiamide and amphiphilic block polymers (P123) as precursor and soft‐template, respectively. The structures of as‐prepared composites were analyzed by thermogravimetric analysis, X‐ray diffraction, elemental analysis, nitrogen adsorption–desorption, scanning electron microscopy, transmission electron microscopy, photoluminescence spectroscopy, and X‐ray photoelectron spectroscopy. The effect of carbon content on the structure of the composites and the catalytic activity for the photodegradation of MB were determined under visible light. The optimal carbon content is determined to be 27.17 wt % on the C/CN‐P123‐0.8 with MB photodegradation rate of 0.0115 min −1 , which was 1.92 times higher than that of C/CN‐P123‐0. The remarkably increased photocatalytic performance arises from the synergistic effect of hybrid carbon and graphitic carbon nitride. Also, the possible degradation mechanism of C/CN‐P123‐0.8 for MB was proposed. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019