化工进展2017，Vol.36Issue(2)：641-646,6.DOI:10.16085/j.issn.1000-6613.2017.02.033
荧光性纳米金CdTe自组装膜制备及其对汞离子识别
Preparation of fluorescent gold nanoparticle CdTe self-assembled monolayers and recognition for mercury (Ⅱ)
摘要
Abstract
With mercaptoacetic acid as stabilizer,CdTe quantum dot was directly synthesized by water phase synthesis method. Then with chitosan as mediation,CdTe quantum dot was indirectly assembled onto gold nanoparticle self-assembled monolayer surfacevia the chemical bond adsorption. The preparation conditions and the fluorescence properties of CdTe quantum dot self-assembled monolayers (SAMs)were further studied. The experimental results showed that fluorescence intensity of the gold nanoparticle CdTe self-assembled film was quenched with the increase of mercury ion concentration, and it had a good linear relationship with mercury (Ⅱ) concentration in the range of 0—16×10–8g/L with a correlation coefficient of 0.9991 and detection limit of 1.56×10–10g/L. The membrane also showed good stability,high sensitivity and good renewability,etc. The new fluorescent sensor was used to detect mercury (Ⅱ) in water from three different areas in Pu tian,and it was found that the mercury ion concentrations of three samples were within the standard,and the sample recovery rate was 96.5%—98%,which verify the method was suitable for the determination of mercury (Ⅱ).关键词
自组装膜/CdTe量子点/荧光/汞离子Key words
self-assembled monolayers/CdTe quantum dots/fluorescent/mercury (Ⅱ)分类
化学化工引用本文复制引用
胡文英,傅丽君,黄建辉,陈春生..荧光性纳米金CdTe自组装膜制备及其对汞离子识别[J].化工进展,2017,36(2):641-646,6.基金项目
国家自然科学基金（31400318）、莆田市科技项目[2014S03(1)]及福建省自然科学基金（2017J0106）项目。 （1）
