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利用水解法制备了具有刺状表面结构的球形二氧化钛基体材料,并采用紫外光解法获得了均匀负载的Ag/TiO2材料。利用扫描电子显微镜(SEM)、色散谱(EDS)、傅里叶变换红外光谱仪(FT-IR)和BET等技术手段对材料的结构、形貌、组成成分及比表面积进行了分析表征。开展了Ag/TiO2复合材料对溶液中碘离子的吸附实验研究,考察并讨论了pH值以及共存离子(Cl-、F-、NO3-、SO42-和CO32-)对吸附的影响,结果表明,Ag/TiO2复合材料具有耐酸性强、吸附选择性高、吸附容量大(207mg/g)等特性。
Abstract：Thorn-like spherical TiO2 matrix material was prepared by hydrolysis, and then the composite materials with uniform supported structure of Ag/TiO2 were obtained by ultraviolet photolysis. The structure, morphology, composition and specific surface area of Ag/TiO2 were characterized by Scanning Electron Microscope(SEM), Energy Dispersive Spectroscopy(EDS),Fourier Transform Infrared(FT-IR) spectroscopy and BET, respectively. The adsorption of iodine ions on Ag/TiO2 was discussed and the effects of pH value and coexisting ions(Cl-, F-,NO3-, SO42-and CO32-) on adsorption capacity were investigated. The results indicated that the composite materials had better resistance to strong acid and strong base, higher adsorption selectivity and higher adsorption capacity(up to 207mg/g).
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基本信息:
DOI：10.16026/j.cnki.iea.2013.04.005
中图分类号:TQ424
引用信息:
[1]张煜昌,王娜,那平.Ag/TiO_2复合材料的制备及其对碘离子的吸附研究[J].离子交换与吸附,2013,29(04):296-305.DOI:10.16026/j.cnki.iea.2013.04.005.
基金信息:
国家自然科学基金;; 国家高技术研究发展计划
2013-08-20
2013-08-20