pH调控的变色酸2R稳定的银纳米簇的合成  

Synthesis of Silver Nanoclusters Stabilized by p H-Regulated Chromotropic Acid 2R

作　　者：郭永艳[1,2] 曾维伟 杨萍[1] 田雁飞[1] 龙云飞 GUO Yongyan;ZENG Weiwei;YANG Ping;TIAN Yanfei;LONG Yunfei(Hunan Nonferrous Metals Vocational and Technical College,Zhuzhou,Hu'nan 412006,China;School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan,Hu'nan 411201,China)

机构地区：[1]湖南有色金属职业技术学院,湖南株洲412006 [2]湖南科技大学,湖南湘潭411201

出　　处：《应用化学》2020年第1期54-60,共7页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21275047);湖南省自然科学基金(2016JJ5005);2018年湖南省有色金属管理局直属单位转型发展项目:瑶岗仙钨钼铋多金属矿绿色选矿新工艺研究项目资助~~

摘　　要：银纳米簇(Ag NCs)具有特殊的物理和化学性质,其具有广泛的应用前景和研究价值。本文探索了以变色酸2R为稳定剂,经过两次pH调节构建一种快速制备具有强荧光特性、稳定存在且粒径小的Ag NCs的方法。在最优实验条件下,运用该方法制备得到的Ag NCs的最大发射波长为450 nm,最大激发波长为336 nm,平均粒径为1.74 nm,主要粒经分布在0.68~2.99 nm区域内,该Ag NCs的晶格间距为0.223 nm,晶格类型为(102)。该Ag NCs可作为探针应用于溶液中微量重金属离子和非金属离子的测定,小分子、弱酸溶液浓度等方面的检测,也可以用于细胞成像等方面。Silver nanoclusters have special physical and chemical properties and wide potential applications.In this paper,a method of rapid preparation of stable silver nanoclusters with strong fluorescence characteristics and small particle size was developed by using chromotropic acid 2R as the stabilizer and pH regulation twice.Under the optimal experimental conditions,the maximum emission wavelength of silver nanoclusters prepared is 450 nm,the maximum excitation wavelength is 336 nm,and the average particle size is 1.74 nm.The main particles are distributed in the region of 0.68~2.99 nm,the lattice spacing of the silver nanocluster is 0.223 nm,and the lattice type is(102).The silver nanoclusters can be used as probes for the determination of trace heavy metal ions,non-metallic ions in solutions and small molecules,the detection of weak acid concentration,and cell imaging.

关 键 词：pH调控 变色酸2R稳定剂 银纳米簇 

分 类 号：O657.3[理学—分析化学]