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以铜离子为模板,以3-氨基丙基-三乙氧基硅烷为偶联剂,纳米TiO2/SiO2为载体,利用表面离子印迹技术,在纳米TiO2/SiO2表面聚合形成了铜离子印迹聚合物.详细研究了铜离子印迹聚合物的吸附性能和选择性.实验结果表明,与非印迹聚合物相比较,铜离子印迹聚合物对铜离子具有较好的识别性和选择性.铜离子印迹聚合物与非印迹聚合物的吸附量分别是36.51mg g-1和11.79mg g-1.该法的检出限为0.17ng mL-1,相对标准偏差为1.97%.将该印迹聚合物用于自来水、青海湖水和扎陵湖水中的铜离子的分离富集和测定,分析结果令人满意.
Using copper ion as the template, 3-aminopropyl-triethoxysilane as the coupling agent and nano-TiO2 / SiO2 as the carrier, the surface of the nano-TiO2 / SiO2 was polymerized to form the copper ion imprinted polymer The adsorption properties and selectivity of copper ion imprinted polymer were studied in detail.The experimental results show that copper ion imprinted polymer has good recognition and selectivity for copper ion compared with non-imprinted polymer.The copper ion imprinted polymer The adsorption capacity of the polymer and non-imprinted polymer were 36.51 mg g-1 and 11.79 mg g-1, respectively.The detection limit of this method was 0.17 ng mL-1 with a relative standard deviation of 1.97% .The imprinted polymer was used in Tap water, Qinghai Lake and Lake Zaling water copper ion separation and enrichment and determination, the results are satisfactory.