Synthesis of CuO thin film sensors by spray pyrolysis method for NO2 gas detection. (2021)

• Record Type: Journal Article
• Authors: Khot, Sambhaji; Phalake, Satish; Mahadik, Shivraj; Baragale, Mahendra; Jagadale, Sandhya; Burungale, Vishal; Navale, Yuvraj; Patil, Vikas; Patil, Vithoba; Patil, Pramod; Patil, Sarita
• Is Part Of: Materials today. Volume 43(2021)Part 4
• Page Start: 2694
• Page End: 2697
• Publication Date: 2021
• Subjects: CuO -- Metal oxide -- Gas sensor -- NO2 gas -- Spray Pyrolysis; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.05.583
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The environmental pollution has become a major concern of today's era. Toxic gases such as CO, CO2 and NO2 are emitted from vehicles, industries, burning of crops etc. These gases are contributing a lot to the air pollution and also producing long term effect on lungs and respiratory system of human beings. Therefore gas sensing measurements for such toxic gases has received major attention. In this study, CuO is deposited by simple spray pyrolysis method and used for gas sensing measurements. The concentration of precursor solution is varied as 0.05 M, 0.1 M, 0.15 M and 0.2 M. The structural and morphological studies are done using XRD patterns and SEM images respectively. XRD patterns reveal the cubic structure of CuO. Gas sensing measurements have shown that the film deposited for 0.15 M concentration shows highest response of 56.23% for NO2 gas. The lowest detection level has observed to be 5 ppm of NO2 . CuO has been found to be selective towards NO2 gas.