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Real-Time Plasmonic Imaging of the Compositional Evolution of Single Nanoparticles in Electrochemical Reactions.

Authors
  • Wu, Gang1
  • Zhou, Xiaoli1
  • Lv, Wen-Li1
  • Qian, Chen1
  • Liu, Xian-Wei1, 2
  • 1 Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China. , (China)
  • 2 Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, China. , (China)
Type
Published Article
Journal
Nano Letters
Publisher
American Chemical Society
Publication Date
May 12, 2022
Identifiers
DOI: 10.1021/acs.nanolett.2c00831
PMID: 35549482
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Real-time probing of the compositional evolution of single nanoparticles during an electrochemical reaction is crucial for understanding the structure-performance relationship and rationally designing nanomaterials for desirable applications; however, it is consistently challenging to achieve high-throughput real-time tracking. Here, we present an optical imaging method, termed plasmonic scattering interferometry microscopy (PSIM), which is capable of imaging the compositional evolution of single nanoparticles during an aqueous electrochemical reaction in real time. By quantifying the plasmonic scattering interferometric pattern of nanoparticles, we establish the relationship between the pattern and composition of single nanoparticles. Using PSIM, we have successfully probed the compositional transformation dynamics of multiple individual nanoparticles during electrochemical reactions. PSIM could be used as a universal platform for exploring the compositional evolution of nanomaterials at the single-nanoparticle level and offers great potentials for addressing the extensive fundamental questions in nanoscience and nanotechnology.

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