Light-activated NO₂ gas sensing of the networked CuO-decorated ZnS nanowire gas sensorLight-activated NO2 gas sensing of the networked CuO-decorated ZnS nanowire gas sensor
- Other Titles
- Light-activated NO2 gas sensing of the networked CuO-decorated ZnS nanowire gas sensor
- Authors
- Park, Sunghoon; Sun, Gun-Joo; Kheel, Hyejoon; Ko, Taegyung; Kim, Hyoun Woo; Lee, Chongmu
- Issue Date
- May-2016
- Publisher
- SPRINGER HEIDELBERG
- Citation
- APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, v.122, no.5, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
- Volume
- 122
- Number
- 5
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/23108
- DOI
- 10.1007/s00339-016-0042-7
- ISSN
- 0947-8396
- Abstract
- CuO-decorated ZnS nanowires were synthesized by the thermal evaporation of ZnS powders followed by a solvothermal process for CuO decoration. The NO₂ gas sensing properties of multiple-networked pristine and CuO-decorated ZnS nanowire sensors were then examined. The diameters of the CuO nanoparticles ranged from 20 to 60 nm. The multiple-networked pristine and CuO-decorated ZnS nanowire sensors showed the responses of 394 and 1055 %, respectively, to 5 ppm of NO₂ at room temperature under UV illumination at 2.2 mW/cm². The response and recovery times of the ZnS nanowire sensor to 5 ppm of NO₂ were also reduced by decoration with the CuO nanoparticles. The responses of the sensors to NO₂ at room temperature increased significantly with increasing UV illumination intensity. The underlying mechanisms for the enhanced response of the ZnS nanowire sensor to NO₂ gas by CuO decoration and UV irradiation are discussed.
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