TiO2/SFP铀吸附材料的制备及其吸附性能  

Synthesis of TiO2/SFP Material and Its Uranium Adsorption Properties

作　　者：张海永 曹京宜 王泽渊 李占双[2] 王君[2] ZHANG Hai-yong;CAO Jing-yi;WANG Ze-yuan;LI Zhan-shuang;WANG Jun(Unit 92228 of the Chinese People’s Liberation Army,Beijing 100071,China;College of Material Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]中国人民解放军92228部队,北京100071 [2]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《核化学与放射化学》2019年第2期208-216,共9页Journal of Nuclear and Radiochemistry

摘　　要：本工作旨在合成一种高吸附性能、高选择性的吸附材料,实现重金属离子的去除和海水中铀资源的提取。将天然葵花粉(SFP)通过溶胶凝胶法与TiO2颗粒进行复合,得到TiO2/SFP复合材料。将合成材料进行扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、能谱分析(EDS)、X射线光电子能谱(XPS)等表征和吸附测试;在pH值为6.0时,材料最大吸附容量可达到215.7mg/g。复合材料对于溶液中铀的吸附符合准二级动力学模型,是一个吸热、可自发的过程,其吸附等温线符合Langmuir模型,在模拟海水中材料对铀的去除率超过90%。This paper is aimed to synthesize a high-performance and high-selectivity adsorption material for the removal of heavy metal ions and the extraction of uranium resources from sea water. TiO2/SFP material was obtained via the recombination of natural sunflower pollen and TiO2 particles by the sol-gel method. The synthetic materials were characterized by SEM, TEM, XRD, EDS and XPS. The uranium adsorption performance was tested. The maximum adsorption capacity of the material is 215.7 mg/g when the pH value is 6.0. The adsorption of uranium in solution corresponds to the pseudo-second-order kinetic model. The adsorption isotherm confirms to the Langmuir model. It is an endothermic and spontaneous process. The removal rate of uranium under simulated seawater is more than 90%.

关 键 词：葵花粉 铀 TIO2 吸附 动力学 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护]