Jump to main content
Jump to site search

Issue 25, 2017
Previous Article Next Article

In situ gold nanoparticle-decorated three-dimensional tin dioxide nanostructures for sensitive and selective gas-sensing detection of volatile organic compounds

Author affiliations

Abstract

Sensitive and selective gas sensors for the detection of volatile organic compounds are highly desired. A composite consisting of a specific structure modified with a noble metal catalyst is considered as a promising sensing material candidate. Herein, we present a three-dimensional tin dioxide (SnO2) nanostructure in situ-decorated with gold nanoparticles (AuNPs) on the surface; this nanostructure exhibited high gas-sensing performance including high response and selectivity towards volatile organic compounds. To achieve high-loading of AuNPs, 3-aminopropyltrimethoxysilane (APTMS) functionalization was conducted on the surface of SnO2/carbonaceous precursors prior to the AuNPs growth. The vapors of volatile organic compounds, such as acetone, methanol, and hexane, were employed as analytes for gas-sensing measurements. The results show that the SnO2 nanostructures decorated with dense AuNPs exhibit remarkably better gas-sensing performance as compared to SnO2 with few AuNPs and pure SnO2. In addition, gas sensors based on three-dimensional AuNP-decorated-SnO2 showed high recognition ability towards different analytes in combination with a principal component analysis method, indicating their promising practical application for gas environment monitoring.

Graphical abstract: In situ gold nanoparticle-decorated three-dimensional tin dioxide nanostructures for sensitive and selective gas-sensing detection of volatile organic compounds

Back to tab navigation

Publication details

The article was received on 07 Apr 2017, accepted on 24 May 2017 and first published on 24 May 2017


Article type: Paper
DOI: 10.1039/C7TC01496A
Citation: J. Mater. Chem. C, 2017,5, 6193-6201
  •   Request permissions

    In situ gold nanoparticle-decorated three-dimensional tin dioxide nanostructures for sensitive and selective gas-sensing detection of volatile organic compounds

    T. Han, Y. Wan, J. Li, H. Zhang, J. Liu, X. Huang and J. Liu, J. Mater. Chem. C, 2017, 5, 6193
    DOI: 10.1039/C7TC01496A

Search articles by author

Spotlight

Advertisements