高等学校化学学报2012，Vol.33Issue(3)：481-485,5.DOI:10.3969/j.issn.0251-0790.2012.03.009
Ag/SiO2/Chitosan复合纳米粒子的合成及对六价铬吸附的分析应用
Synthesis of Ag/SiO2/Chitosan Nanocomposites and Its Analytical Application for Adsorbing Chromium ( Ⅵ )
摘要
Abstract
The Ag/SiO2/Chitosan nanocomposites were synthesized by the reverse microemulsion method and characterized by TEM, CV(cyclic voltammetry) and UV-Vis spectroscopy. The results show that the nanocomposites present better electrical conductivity, anion channel effect and adsorption effect for chromium ( Ⅵ) . Based on these findings as well as the use of chemically modified electrode technique, a sensitive and selective electrochemiluminescence method for chromium (Ⅵ) was developed. Under the optimal experimental conditions, the enhancing ECL( electrochemiluminescence) intensity was linear with the concentration of chro-mium( VI) in the range of 2.0xl0-12-l.0xl0-10 g/mL. The detection limit for chromium(Ⅵ) was 2xl0-13 g/mL.关键词
复合纳米粒子/六价铬测定/电化学发光/鲁米诺Key words
Nanocomposite/Detection of chromium (Ⅵ) /Electrochemiluminescence/Luminol分类
化学化工引用本文复制引用
张艳,郑行望..Ag/SiO2/Chitosan复合纳米粒子的合成及对六价铬吸附的分析应用[J].高等学校化学学报,2012,33(3):481-485,5.基金项目
国家自然科学基金(批准号:20575040)、国家文物局项目(批准号:20090106)和中央高校项目(批准号:GK201001007)资助. （批准号:20575040）
