| 氧化石墨烯-壳聚糖复合材料对甲烯蓝的吸附动力学 |
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| 引用本文： | 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. |
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| 作者姓名： | 徐静 闻宏亮 欧阳建波 王宁 杨胜韬 |
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| 作者单位： | (西南民族大学化学与环境保护工程学院, 成都610041) |
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| 基金项目： | 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) |
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| 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.
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| 关 键 词： | 甲烯蓝 吸附动力学 氧化石墨烯-壳聚糖 印染废水 |
Adsorption Kinetics of Methylene Blue on Graphene Oxide-Chitosan Composite |
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| 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),2013,19(4):400-404. |
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| Authors: | XU Jing;WEN Hong-liang;OUYANG Jian-bo;WANG Ning;YANG Sheng-tao |
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| Institution: | (College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities,;
Chengdu 610041, China) |
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| 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. |
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| Keywords: | adsorption kinetics dyeing wastewater graphene oxide-chitosan methylene blue |
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