Natural polysaccharides-modified graphene oxide for adsorption of organic dyes from aqueous solutions

被引：248

作者：

Qi, Yunchuan ^{[1
]}

Yang, Meiling ^{[1
]}

Xu, Wenhui ^{[1
]}

He, Sha ^{[1
]}

Men, Yi ^{[1
]}

机构：

[1] Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 486卷

关键词：

Polysaccharide; Graphene oxide; Adsorption; Dye; METHYLENE-BLUE; CHITOSAN/GRAPHENE OXIDE; EFFECTIVE ADSORBENTS; XYLAN DERIVATIVES; REMOVAL; WATER; COMPOSITE; FUNCTIONALIZATION; GREEN; NANOCOMPOSITES;

D O I：

10.1016/j.jcis.2016.09.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three polysaccharide- graphene oxide composite materials (PS-GO) were synthesized from graphene oxide (GO) and natural polysaccharides, which compounds were tested for removal of organic dyes from aqueous solutions. These adsorbents were characterized by Fourier transform infrared spectroscopy (FTIR), Raman spectrometer, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), N-2 adsorption desorption isotherms and UV-vis spectrum. The adsorption properties of PS-GO towards four organic dyes were investigated along with measured effects on adsorption by initial concentration, temperature, contact time and pH value. Resulting adsorption isotherms, thermodynamics and kinetics were analyzed systematically. In these tests, PS-GO composite materials were found to be more efficient than as prepared GO as adsorbents for the removal of both cationic and anionic organic dyes. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：84 / 96

页数：13

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