| 还原型和氧化型谷胱甘肽在磁性Fe3O4纳米粒子上的吸附组装 |
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| 引用本文： | 王青,姜继森,杨勇. 还原型和氧化型谷胱甘肽在磁性Fe3O4纳米粒子上的吸附组装[J]. 化学通报, 2006, 69(3): 184-190 |
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| 作者姓名： | 王青 姜继森 杨勇 |
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| 作者单位： | 华东师范大学物理系纳米功能材料与器件应用研究中心,上海,200062;华东师范大学物理系纳米功能材料与器件应用研究中心,上海,200062;华东师范大学物理系纳米功能材料与器件应用研究中心,上海,200062 |
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| 基金项目： | 上海市纳米科技专项基金 |
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| 摘 要： | 研究了Fe3O4磁性纳米粒子在水溶液中对还原型谷胱甘肽(GSH)和氧化型谷胱甘肽(GSSG)的吸附。分别测定了两种物质在不同温度下的吸附等温线,比较了研究结果,并用Freundlich吸附等温式对数据进行拟合,根据公式计算出相关的吸附热力学函数值,研究了碳化二亚胺含量和pH对吸附结果的影响,并从吸附量和脱附实验结果探讨了其可能的吸附机理。结果表明,还原型谷胱甘肽和氧化型谷胱甘肽在Fe3O4表面的吸附是不可逆的,加入强电解质基本不能够脱附,两者间形成了部分共价键。
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| 关 键 词： | Fe3O4 纳米粒子 还原型和氧化型谷胱甘肽 吸附 脱附 热力学 |
| 收稿时间： | 2005-06-26 |
| 修稿时间： | 2005-06-262005-11-15 |
Adsorption of Glutathione Reduced and Oxidized on Magnetite Fe3O4 Nanoparticles |
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| Wang Qing,Jiang Jisen,Yang Yong. Adsorption of Glutathione Reduced and Oxidized on Magnetite Fe3O4 Nanoparticles[J]. Chemistry, 2006, 69(3): 184-190 |
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| Authors: | Wang Qing Jiang Jisen Yang Yong |
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| Affiliation: | Department of Physics, Center for Functional Nanomaterials and Devices, East China Normal University, Shanghai 200062 |
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| Abstract: | The adsorption of glutathione reduced and oxidized on magnetite was studied, and adsorption isotherms of glutathione reduced and oxidized on Fe-3O-4 nanoparticles at different temperature were determined and their amounts adsorbed were compared individually. Results showed that Freundlich equation is well fitted for the adsorption of glutathione reduced and oxidized on Fe-3O-4 nanoparticles, the adsorption thermodynamics parameters were obtained, and the adsorption mechanism were discussed. Irreversible adsorption of glutathione reduced and oxidized was observed since it cannot be erased in KNO-3 and HCl solutions. It was suggested that chemical interaction bonds play an important role in the adsorption. |
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| Keywords: | Magnetite Nanoparticle Glutathione reduced and oxidized Adsorption Desorption Thermodynamics |
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