氧化石墨烯-壳聚糖复合材料对甲烯蓝的吸附动力学

doi:10.3969/j.issn.1007-2861.2013.04.013

上海大学学报(自然科学版) ›› 2013, Vol. 19 ›› Issue (4): 400-404.doi: 10.3969/j.issn.1007-2861.2013.04.013

氧化石墨烯-壳聚糖复合材料对甲烯蓝的吸附动力学

徐静, 闻宏亮, 欧阳建波, 王宁, 杨胜韬

(西南民族大学化学与环境保护工程学院, 成都610041)

出版日期:2013-08-27 发布日期:2013-08-27
作者简介:杨胜韬(1985—), 男, 博士, 研究方向为纳米材料的制备、应用与安全性. E-mail: yangst@pku.edu.cn
基金资助:
西南民族大学中央高校基本科研业务费专项资金资助项目(13NZYQN14)

Adsorption Kinetics of Methylene Blue on Graphene Oxide-Chitosan Composite

XU Jing, WEN Hong-liang, OUYANG Jian-bo, WANG Ning, YANG Sheng-tao

(College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities,
Chengdu 610041, China)

Online:2013-08-27 Published:2013-08-27

摘要/Abstract

摘要： 氧化石墨烯-壳聚糖复合材料(graphene oxide-chitosan composite, GO-CS) 可用于清除阳离子染料, 具有吸附量大、易于分离等优点. 对GO-CS吸附阳离子染料甲烯蓝的动力学进行了研究, 结果显示, GO-CS对甲烯蓝的吸附符合二级动力学模型. 颗粒内扩散模型分析表明, GO-CS 吸附甲烯蓝的扩散机制包括颗粒内扩散和表面扩散.此外, 还发现GO-CS 对甲烯蓝的吸附量受pH 值和离子强度的影响, 较高的pH 值和离子强度有利于提高吸附量.

关键词: 甲烯蓝, 吸附动力学, 氧化石墨烯-壳聚糖, 印染废水

Abstract: Graphene oxide-chitosan composite (GO-CS) is powerful in decoloration of cationic dyes. GO-CS holds several advantages including high adsorption capacity and easy separation after adsorption. This paper investigates the adsorption kinetics of methylene blue on GO-CS. The adsorption process is nicely described by a pseudo-second-order model. The diffusion mechanism includes intraparticle diffusion and surface diffusion.The adsorption capacity of GO-CS can be regulated by pH and ionic strength, where higher pH and ionic strength were preferred.

Key words: adsorption kinetics, dyeing wastewater, graphene oxide-chitosan, methylene blue

中图分类号:

O 647.33

徐静, 闻宏亮, 欧阳建波, 王宁, 杨胜韬. 氧化石墨烯-壳聚糖复合材料对甲烯蓝的吸附动力学[J]. 上海大学学报(自然科学版), 2013, 19(4): 400-404.

XU Jing, WEN Hong-liang, OUYANG Jian-bo, WANG Ning, YANG Sheng-tao. Adsorption Kinetics of Methylene Blue on Graphene Oxide-Chitosan Composite[J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(4): 400-404.

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氧化石墨烯-壳聚糖复合材料对甲烯蓝的吸附动力学

Adsorption Kinetics of Methylene Blue on Graphene Oxide-Chitosan Composite

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