Highly efficient adsorption of Basic Violet 3 dye by composite material derived from graphene oxide intercalated bentonite

被引：0
|
作者：
Chen Y. [1 ]
Cheng N. [2 ]
Yang Y. [1 ]
Lu K. [1 ]
Luo Y. [1 ]
Yi H. [2 ]
机构：
[1] Department of Food and Chemical Engineering, Liuzhou Institute of Technology, Guangxi, Liuzhou
[2] School of Environment and Food Engineering, Liuzhou Vocational and Technical College, Guangxi, Liuzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 06期
关键词：
adsorption mechanism; Basic Violet 3; bentonite; graphene oxide; intercalation composite;
D O I：
10.16085/j.issn.1000-6613.2021-1356
中图分类号：
学科分类号：
摘要：
The composite materials (BGO) prepared by graphene oxide (GO) and bentonite (Bent) through ultrasound method were tested for their ability to absorb Basic Violet 3. The materials structure were characterized by X-ray Diffraction, Fourier Transform Infra-Red Spectrophotometer, BET equation, Scanning Electron Microscope and X-ray Photoelectron Spectroscopy. The biosorption data were analyzed using Langmuir, Freundlich, pseudo-first-order kinetic model and pseudo-second-order kinetic model, and the thermodynamic parameters of the biosorption were determined by Van’t Hoff equation. XRD analysis indicated that the interlayer spacing of Bent increased from 1.35nm to 1.6nm after GO were inserted successfully, and the specific surface area of BGO were improved significantly. Langmuir model and pseudo-second-order kinetic model proved to be the best fit to the experimental data. BGO performed more significant adsorption capacity and adsorption speed. Compared with Bent, the maximum adsorption capacity of BGO was 420.17mg/g at an initial dye concentration of 250mg/L and 30℃. Thermodynamic analysis verified that BGO biosorption was spontaneous and endothermic. Mechanism analysis revealed that the synergy between GO with high specific surface area and oxygen-containing groups and Bent played a prominent role in adsorption ability of BGO. © 2022, Chemical Industry Press Co., Ltd. All rights reserved.
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页码：3324 / 3332
页数：8
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