Sensitive Room Temperature Photoluminescence-Based Sensing of H2S with Novel CuO-ZnO Nanorods.
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.
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Xiao
X
Liu
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Baosheng
B
Du
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Ye
Y
Sun
State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150001, China.
Miao
M
Yu
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Yongqi
Y
Yin
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Wei
W
Tang
State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150001, China.
Chong
C
Chen
State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150001, China.
Lei
L
Sun
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
Bin
B
Yang
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.|Department of Mathematics and Materials Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States.
Wenwu
W
Cao
School of Chemistry, University of Bristol , Bristol BS8 1TS, U.K.
Michael N R
MN
Ashfold
Cu-doped ZnO nanorods; gas sensing; heterostructure; optical sensor; pulsed laser deposition; vapor−solid−solid mode