Carbon-doped graphitic carbon nitride as environment-benign adsorbent for methylene blue adsorption: Kinetics, isotherm and thermodynamics study

被引：76
作者：
Ren, Bin [1 ,2 ]
Xu, Yuelong [1 ,2 ]
Zhang, Lihui [1 ,2 ]
Liu, Zhenfa [1 ,2 ]
机构：
[1] Hebei Acad Sci, Inst Energy Resources, Shijiazhuang 050081, Hebei, Peoples R China
[2] Hebei Engineer Res Ctr Water Saving Ind, Shijiazhuang 050081, Hebei, Peoples R China
来源：
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2018年 / 88卷
关键词：
C3N4; Methylene blue; Adsorption; Electrostatic attraction; pi-pi interactions; EFFICIENT REMOVAL; G-C3N4; DEGRADATION; PERFORMANCE; POLLUTANTS; ANTIBIOTICS;
D O I：
10.1016/j.jtice.2018.03.041
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A novel, carbon-doped graphitic carbon nitride (C-C3N4-20) was used for methylene blue (MB) removal from an aqueous solution. In dye adsorption experiments, C-C-3-N-4-20 showed a high MB adsorption efficiency due to its extended pi-conjugation system and porous structure, the maximum adsorption capacity of C-C3N4-20 for MB was 57.87 mg g(-1), when the initial concentrations of MB were 20 mg L-1. A Langmuir model fit the MB adsorption isotherm of CC3N4-20, and a pseudo-second-order kinetic model fit the adsorption kinetics. The MB adsorption process on CC3N4-20 is physical and mainly via electrostatic attraction and pi-pi interactions. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：114 / 120
页数：7
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