Jump to main content
Jump to site search


Direct SERS tracking of a chemical reaction at a single 13 nm gold nanoparticle

Author affiliations

Abstract

Metal nanoparticles (NPs) with decreased sizes are promising catalysts in energy and medicine. Measuring the local reactions and simultaneously acquiring molecular insights at single small NPs, however, remain an experimental challenge. Here we report on surface-enhanced Raman spectroscopic (SERS) tracking of catalytic reactions of single 13 nm gold NPs (GNPs) in situ. We designed spatially isolated (>1.5 μm of inter-dimer space) GNP dimers, each of which consisted of two GNPs with sizes of ∼200 and ∼13 nm, respectively. This design integrates the SERS and catalytic activities into a single entity, while eliminating the crosstalk between adjacent particles, which allows us to trace the redox-derived spectral evolution at single 13 nm GNPs for the first time. We also quantified the reaction kinetics of each individual GNP and analyzed the average behavior of multiple GNPs. There is a large variability among different particles, which underscores the significance of single particle analysis.

Graphical abstract: Direct SERS tracking of a chemical reaction at a single 13 nm gold nanoparticle

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Oct 2018, accepted on 02 Dec 2018 and first published on 04 Dec 2018


Article type: Edge Article
DOI: 10.1039/C8SC04496A
Citation: Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY license
  •   Request permissions

    Direct SERS tracking of a chemical reaction at a single 13 nm gold nanoparticle

    K. Zhang, Y. Liu, Y. Wang, J. Zhao and B. Liu, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C8SC04496A

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements