NO2 gas sensing properties of Au-functionalized porous ZnO nanosheets enhanced by UV irradiation

Title
NO2 gas sensing properties of Au-functionalized porous ZnO nanosheets enhanced by UV irradiation
Authors
이종무
Keywords
D. ZnO; Au; Functionalization; Gas sensing; Nanosheet
Issue Date
2013
Publisher
CERAMICS INTERNATIONAL
Series/Report no.
CERAMICS INTERNATIONAL; vol.39 startpage 8615 endpage 8622
Abstract
Porous ZnO nanosheets were synthesized by thermal evaporation. The morphology, crystal structure, and sensing properties of the ZnO nanosheets to NO2 gas at room temperature under UV illumination were examined. Au nanoparticles with diameters of a few tens of nanometers were distributed over the ZnO nanosheets. The responses of the multiple networked nanosheet gas sensors were improved 1.8?3.3 fold by Au functionalization at NO2 concentrations ranging from 1 to 5 ppm. Furthermore, the Au-functionalized ZnO nanosheet gas sensors showed a considerably enhanced response at room temperature under ultraviolet (UV) illumination. In addition, the mechanisms through which the gas sensing properties of ZnO nanosheets are enhanced by Au functionalization and UV irradiation are discussed. & 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://dx.doi.org/10.1016/j.ceramint.2013.04.035
http://dspace.inha.ac.kr/handle/10505/32794
ISSN
0272-8842
Appears in Collections:
College of Engineering(공과대학) > Materials Science & Engineering (신소재공학) > Journal Papers, Reports(신소재공학 논문, 보고서)
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