| 氧化石墨烯和石墨烯对离子型染料不同吸附性能研究 |
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| 引用本文： | 唐和清,张海燕.氧化石墨烯和石墨烯对离子型染料不同吸附性能研究[J].中南民族学院学报(自然科学版),2014(2):5-9. |
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| 作者姓名： | 唐和清 张海燕 |
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| 作者单位： | 中南民族大学化学与材料科学学院,催化材料科学湖北省暨国家民委-教育部重点实验室,武汉430074 |
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| 基金项目： | 国家自然科学基金资助项目（21077037,21107027,21177044） |
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| 摘 要： | 采用改进的Hummers法制备了氧化石墨烯,将其采用水合肼还原获得石墨烯,以氧化石墨烯和石墨烯为吸附剂,分别采用透射电镜（TEM）,傅里叶变换红外光谱（FT-IR）,拉曼光谱（RS）和X射线衍射光谱（XPS）对阴阳离子的不同吸附性能进行了分析表征.结果表明：两吸附剂对罗丹明B的吸附能力较甲基橙强,最大吸附容量分别为551.2 mg/g和476.2 mg/g,各吸附体系中的吸附行为都符合Langmuir等温吸附模型和二级动力学反应特征.
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| 关 键 词： | 氧化石墨烯 石墨烯 吸附 离子型染料 吸附模型 |
A Comparison between the Adsorption Performances of Ionic Dyes on Graphene Oxide and Graphene |
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| Tang Heqing,Zhang Haiyan.A Comparison between the Adsorption Performances of Ionic Dyes on Graphene Oxide and Graphene[J].Journal of South-Central University for Nationalities(Natural Sciences),2014(2):5-9. |
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| Authors: | Tang Heqing Zhang Haiyan |
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| Affiliation: | ( Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission ＆ Ministry of Education, South-Central University for Nationalities, Wuhan 430074,China) |
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| Abstract: | Graphene oxide was prepared by a modified Hummer＇s method and reduced by hydrazine to prepare graphene. The graphene oxide and graphene were used as adsorbents for anionic and cationic dyes. The system was characterized by TEM, FF-IR, Raman spectroscopy and XPS and the results showed that the maximum adsorption capacities of graphene oxide and graphene for Rhodamine B were 551.2 mg/g and 476.2 mg/g respectively, higher than that for methyl orange. The adsorption isotherms fitted well with the Langmuir isotherm model and the adsorption processes followed a pseudo second-order model. |
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| Keywords: | graphene oxide graphene adsorption ionic dyes adsorption model |
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