In:
Angewandte Chemie, Wiley, Vol. 134, No. 43 ( 2022-10-24)
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 HgCl 2 ‐induced structural transformation of amorphous selenium nanoparticles (SeNPs) with the main composition of Se 8 . Owing to the high binding affinity with selenium and coulomb interactions, Hg 2+ ions can permeate into the interior of SeNPs, making the amorphous Se 8 turn to polycrystalline Hg 3 Se 2 Cl 2 . As a proof of concept, SeNPs then serve as a highly effective scavenger for selective removal of Hg 2+ 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.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.43
DOI:
10.1002/ange.202210313
Language:
English
Publisher:
Wiley
Publication Date:
2022
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