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In Situ Imaging of Ion Motion in a Single Nanoparticle: Structural Transformations in Selenium Nanoparticles.

Authors :
Chen, Bin Bin
Liu, Meng Li
Zou, Hong Yan
Liu, Yang
Li, Yuan Fang
Swihart, Mark T
Huang, Cheng Zhi
Source :
Angewandte Chemie. 10/24/2022, Vol. 134 Issue 43, p1-5. 5p.
Publication Year :
2022

Abstract

Intraparticle ion motions are critical to the structure and properties of nanomaterials, but rarely disclosed. Herein, in situ visualization of ion motions in a single nanoparticle is presented by dark‐field microscopy imaging, which shows HgCl2‐induced structural transformation of amorphous selenium nanoparticles (SeNPs) with the main composition of Se8. Owing to the high binding affinity with selenium and coulomb interactions, Hg2+ ions can permeate into the interior of SeNPs, making the amorphous Se8 turn to polycrystalline Hg3Se2Cl2. As a proof of concept, SeNPs then serve as a highly effective scavenger for selective removal of Hg2+ ions from solution. This new finding offers visual proof for the photophysical process involving intraparticle ion motion, demonstrating that tracking the ion motions is a novel strategy to comprehend the formation mechanism with the purpose of developing new nanostructures like nanoalloys and nano metal compounds. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00448249
Volume :
134
Issue :
43
Database :
Academic Search Index
Journal :
Angewandte Chemie
Publication Type :
Academic Journal
Accession number :
159764721
Full Text :
https://doi.org/10.1002/ange.202210313