纯化及羧化多壁碳纳米管吸附铀的研究OA北大核心CSCDCSTPCD
Application of Purified and Carboxylic Multi-Walled Carbon Nanotubes for Uranium(Ⅵ) Ions Adsorptive Removal From Aqueous Solution
对商品多壁碳纳米管(MWNTs)进行纯化及硝酸羧化处理,并对其分别进行热重及红外表征.研究了纯化和羧化MWNTs对溶液中铀的吸附行为,考察了介质酸度、温度、吸附时间、溶液中铀的初始质量浓度对吸附容量的影响.实验结果表明,有质量比约为10％的羧基成功接枝于MWNTs,羧化MWNTs比纯化MWNTs表面更为粗糙,且出现羧基的特征红外波数为2913 cm-1及1641 cm-1.在pH=3.0～6.0范围内,2种MWNTs对铀的吸附量随着pH和平衡浓度…查看全部>>
Commercial multi-walled carbon nanotubes(MWNTs) were of purified and carboxylated, and characterized by thermogravimetric analysis(TGA) and infrared spectros-copy(IR). The two nanomaterials were applied for the adsorption of uranium ion. The effects of acidity, temperature, time, and uranium initial mass concentration of the solution on the adsorption capacity were studied. The results show the grafted carboxyl group account for 10% of the carboxylated MWNTs…查看全部>>
刘淑娟;李金英;罗明标;杨佳;张麟熹
中国原子能科学研究院,北京102413东华理工大学应用化学系,江西抚州344000中国原子能科学研究院,北京102413东华理工大学应用化学系,江西抚州344000东华理工大学应用化学系,江西抚州344000
化学化工
多壁碳纳米管表征吸附铀吸附模型
multi-walled carbon nanotubescharacterizationadsorption uraniumadsorption model
《核化学与放射化学》 2011 (5)
285-290,6
国防基础科研项目(A3420060146)
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