Citation: GUO Yongyan, ZENG Weiwei, YANG Ping, TIAN Yanfei, LONG Yunfei. Synthesis of Silver Nanoclusters Stabilized by pH-Regulated Chromotropic Acid 2R[J]. Chinese Journal of Applied Chemistry, ;2020, 37(1): 54-60. doi: 10.11944/j.issn.1000-0518.2020.01.190131 shu

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

GUO Yongyan ^a,b ,
ZENG Weiwei ^a ,
YANG Ping ^a ,
TIAN Yanfei ^a ,
LONG Yunfei ^a,b,,

a.
Hunan Nonferrous Metals Vocational and Technical College, Zhuzhou, Hu'nan 412006, China
b.
School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hu'nan 411201, China

Corresponding author: LONG Yunfei, l_yunfei927@163.com
Received Date: 7 May 2019
Revised Date: 24 July 2019
Accepted Date: 29 August 2019

Fund Project: the National Natural Science Foundation of China 21275047Supported by the National Natural Science Foundation of China(No.21275047), Hunan Natural Science Foundation(No.2016JJ5005), Transformation and Development Project of Hunan Province Non-ferrous Metals Administration in 2018: Research on New Green Mineral Processing Technology of Yaogang Xian Tungsten Molybdenum Bismuth Polymetallic OreHunan Natural Science Foundation 2016JJ5005

Figures(8)

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.
- pH regulation,
- chromotropic acid 2R stablizer,
- silver nanoclusters
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