TY - JOUR
T1 - Enhancement of NH3 sensing performance in flower-like ZnO nanostructures and their growth mechanism
AU - Zhang, Yu
AU - Liu, Tianmo
AU - Hao, Jinghua
AU - Lin, Liyang
AU - Zeng, Wen
AU - Peng, Xianghe
AU - Wang, Zhongchang
PY - 2015/12/1
Y1 - 2015/12/1
N2 - ZnO nanostructures hold substantial promise for gas-sensing applications owing to their outstanding ethanol sensing performance, yet their sensing performance toward NH3 has rarely been reported. Here, we report on a successful preparation of sunflower-like ZnO nanostructures and ZnO nanoparticle via a facile hydrothermal method, and demonstrate that the ZnO nanoflowers have high gas-sensing performances toward NH3 under a low concentration of 10-50 ppm. Further structural characterization reveals that the sunflower-like nanostructure comprises six triangles-like and one sphere-like nanostructures, and the triangle-like nanostructure is single crystalline with {0 0 1} crystal face. As a consequence of their unique morphology, the nanoflowers show much improved NH3 sensing performances than the nanoparticles with a high sensitivity of 49.5.
AB - ZnO nanostructures hold substantial promise for gas-sensing applications owing to their outstanding ethanol sensing performance, yet their sensing performance toward NH3 has rarely been reported. Here, we report on a successful preparation of sunflower-like ZnO nanostructures and ZnO nanoparticle via a facile hydrothermal method, and demonstrate that the ZnO nanoflowers have high gas-sensing performances toward NH3 under a low concentration of 10-50 ppm. Further structural characterization reveals that the sunflower-like nanostructure comprises six triangles-like and one sphere-like nanostructures, and the triangle-like nanostructure is single crystalline with {0 0 1} crystal face. As a consequence of their unique morphology, the nanoflowers show much improved NH3 sensing performances than the nanoparticles with a high sensitivity of 49.5.
KW - Gas sensor
KW - Nanoflowers
KW - Single crystalline
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=84949510105&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84949510105&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2015.08.170
DO - 10.1016/j.apsusc.2015.08.170
M3 - Article
AN - SCOPUS:84949510105
VL - 357
SP - 31
EP - 36
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -