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

Xiao Liu, Baosheng Du, Ye Sun, Miao Yu, Yongqi Yin, Wei Tang, Chong Chen, Lei Sun, Bin Yang, Wenwu Cao, Michael N.R. Ashfold

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

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 vapor-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 suggest 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.

Original languageEnglish (US)
Pages (from-to)16379-16385
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number25
DOIs
StatePublished - Jun 29 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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