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Sensitive Room Temperature Photoluminescence-Based Sensing of H2S with Novel CuO–ZnO Nanorods

Research output: Contribution to journalArticle

  • Xiao Liu
  • Baosheng Du
  • Ye Sun
  • Miao Yu
  • Yongqi Yin
  • Wei Tang
  • Chong Chen
  • Lei Sun
  • Bin Yang
  • Wenwu Cao
  • Michael N R Ashfold
Original languageEnglish
Pages (from-to)16379–16385
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Journal issue25
Early online date3 Jun 2016
DOIs
StatePublished - 29 Jun 2016

Abstract

Novel CuO nanoparticle-capped ZnO nanorods have been produced using a pulsed laser deposition (PLD) method. These nanorods are shown to grow by a CuO-nanoparticle-assisted vapour-solid-solid (V-S-S) mechanism. The photoluminescence (PL) accompanying ultraviolet illumination of these capped nanorod samples shows large variations upon exposure to trace quantities of H2S gas. The present data suggests that both the Cu-doped ZnO stem and the CuO capping nanoparticle contribute to optical H2S sensing with these CuO-ZnO nanorods. This study represents the first demonstration of PL-based H2S gas sensing, at room temperature, with sub-ppm sensitivity. It also opens the way to producing CuO-ZnO nanorods by a V-S-S mechanism using gas phase methods other than PLD.

    Research areas

  • Cu-doped ZnO nanorods, heterostructure, pulsed laser deposition, vapour-solid-solid mode, gas sensing, optical sensor

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  • Manuscript_CuO-ZnO NRs final2

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via ACS at http://pubs.acs.org/doi/abs/10.1021/acsami.6b02455. Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 1 MB, PDF-document

    License: CC BY-NC

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