CuNPs的合成及在水中Cr(Ⅵ)的检测  

Synthesis of CuNPs and Detection of Cr(VI) in Water

作　　者：杨颖 胡一铭 刘楠 高竹青[1] YANG Ying;HU Yi-ming;LIU Nan;GAO Zhu-qing(Taiyuan University of Science and Technology School of Chemical and Biological Engineering,Taiyuan 030024,China)

机构地区：[1]太原科技大学化学与生物工程学院,太原030024

出　　处：《太原科技大学学报》2025年第1期94-100,共7页Journal of Taiyuan University of Science and Technology

基　　金：山西省科技厅重点研发计划(201803D121099);太原科技大学博士启动基金(20182020)。

摘　　要：构建了一种基于抗坏血酸修饰CuNPs高选择性检测水中Cr(Ⅵ)的方法。采用一锅合成法,以硝酸铜作为铜源,抗坏血酸作为还原剂,在氢氧化钠溶液的调节下简易合成铜纳米粒子(CuNPs).合成的CuNPs表现出高且稳定的荧光性能,由于内滤效应,Cr(Ⅵ)可淬灭其荧光,因此可作为高灵敏度的Cr(Ⅵ)传感器,从而建立一种Cr(Ⅵ)的荧光检测方法。CuNPs的荧光淬灭效率与Cr(Ⅵ)浓度在(1~10)μmol/L范围内线性相关,线性相关系数R2=0.992 5,检测限为0.100 4μmol/L,该方法可快速、灵敏、选择性地检测Cr(Ⅵ).A highly selective method for the detection of Cr(Ⅵ)in water based on ascorbic acid modified CuNPs was developed.Copper nanoparticles(CuNPs)with high fluorescence intensities and good photostability were synthesized by one pot method with copper nitrate as copper source and ascorbic acid as reducing agent in sodium hydroxide solution.CuNPs synthesized can be used as a high sensitivity Sensor of Cr(Ⅵ)because of the effect of internal filtration,which can quench the fluorescence of CuNPs.The fluorescence quenching efficiency of CuNPs was linearly correlated with the concentration of Cr(Ⅵ)in the range of(1~10)μmol/L,the linear relationship R 2=0.9925,and the detection limit was 0.1004μmol/L.This method can be used for the rapid,sensitive and highly selective detection of Cr(Ⅵ).

关 键 词：CuNPs Cr(Ⅵ) 荧光淬灭 荧光检测 

分 类 号：TQ131.1[化学工程—无机化工]