Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 274, Issue -, Pages 1-9Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.07.117
Keywords
Spray pyrolysis technique; ZnO thin films; Photoelectrocatalysis; Gas sensing; CO2 gas; Terephthalic acid
Funding
- Science and Engineering Research Board, New Delhi [PDF/2017/000691, PDF/2017/001419]
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A hexagonal ZnO thin films have been successfully synthesized by chemical spray pyrolysis technique. Photoelectrocatalytic activity of ZnO photoelectrode is tested for photoelectrocatalytic degradation of terephthalic acid as a model organic pollutant. The degradation percentage of terephthalic acid using ZnO photoelectrode has reached up to 91% under ultraviolet illumination after 400 min. ZnO thin films are used for detecting CO2 gas and getting maximum response for operating temperature of 350 degrees C and response and recovery time periods are 75 and 108 s, respectively for 400 ppm CO2 gas concentration. ZnO sensor has good repeatability along with a quick response time. Thus a multifunctional ZnO thin film is the potential candidate for both for photocatalytic and CO2 gas sensing applications.
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