Tracking Light-Induced Fragmentation of Single Silver Nanoparticles by Single Entity Electrochemistry

Authors

Mengjie Chen, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, P. R. China;
Si-Min Lu, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, P. R. China;Follow
Hao-Wei Wang, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, P. R. China;
Yi-Tao Long, State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, P. R. China;Follow

Corresponding Author

Si-Min Lu(simin_lu@nju.edu.cn);
Yi-Tao Long(ytlong@ecust.edu.cn)

Abstract

Light irradiation on silver nanoparticles (Ag NPs) could cause the energy conversion, thus, the fragmentation of Ag NPs. It is important to detect the changes of fragmented Ag NPs in the aspects of physical and chemical properties. Herein, benefiting from the high sensitivity, high temporal resolution, and high-throughput, single entity electrochemistry (SEE) method is introduced to in-situ track the dynamic laser fragmentation of single Ag NP. Compared with UV-Vis absorption spectroscopy and transmission electron microscopy (TEM), SEE methods enables an accurate in-situ measurements of light-induced fragmentation of single Ag NP. The variation in the statistic current amplitude displays the real-time changes of single Ag NP upon laser irradiation for 60 min, which indicates that the laser of 532 nm wavelength is the most effective laser for the dynamic fragmentation. By virtue of the excellent sensing performance, SEE is further applied in revealing the heterogeneity in Ag NPs’ intrinsic physicochemical properties, such as size, crystal structure, surface charge density. The study highlights the potential of SEE to advancing the real-time characterization of nanomaterials in the chemical reactions.

Graphical Abstract

Keywords

light-induced fragmentation, single entity electrochemistry, stochastic collision electrochemistry, single silver nanoparticles

DOI Link

https://doi.org/10.13208/j.electrochem.210852

Publication Date

2022-03-28

Online Available Date

2021-12-19

Revised Date

2021-12-14

Received Date

2021-11-09

Recommended Citation

Mengjie Chen, Si-Min Lu, Hao-Wei Wang, Yi-Tao Long. Tracking Light-Induced Fragmentation of Single Silver Nanoparticles by Single Entity Electrochemistry[J]. Journal of Electrochemistry, 2022 , 28(3): 2108521.
DOI: 10.13208/j.electrochem.210852
Available at: https://jelectrochem.xmu.edu.cn/journal/vol28/iss3/5