Hydrothermal synthesis of carbon microsphere from glucose at low temperature and its adsorption property of uranium(VI)

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• 作者：Huaming Cai ; Xiaoyan Lin ; Yao Qin…
• 关键词：Hydrothermal synthesis ; Carbon microsphere ; Uranium(VI) ; Adsorption
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：311
• 期：1
• 页码：695-706
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

The carbon microsphere which possesses a large number of carboxyl groups on its surface was synthesized by hydrothermal treatment from aqueous glucose solutions at 130 °C and further calcination. The results showed that the maximum adsorption capacity (163 mg/g) of the carbon microspheres towards U(VI) was obtained, and the adsorption kinetic was well fitted by the pseudo-second-order kinetic model. Meanwhile, the adsorption isotherm was better described by the Langmuir model. The thermodynamic parameters indicated the adsorption process was an endothermic and spontaneous process. The possible adsorption mechanism of the carbon microspheres for U(VI) involves ion-exchange and coordination reaction.