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Sustainable Approach toward the Development of Next-Generation Gas Sensors

Fathima, N and Jha, RK and Bhat, N (2023) Sustainable Approach toward the Development of Next-Generation Gas Sensors. In: ACS Sustainable Chemistry and Engineering, 11 (22). pp. 8217-8228.

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Official URL: https://doi.org/10.1021/acssuschemeng.2c07299


The increase in the usage of non-biodegradable substrates and the generation of toxic wastes from laboratories has led to a sharp increase in the pollution caused by the electronics industry. In this study, we report on a novel approach to tackle this by successfully fabricating a completely biodegradable and eco-friendly chemiresistive gas sensor. The substrate was made of bioplastic and was coated with a silk mesh. This substrate was thoroughly studied for its flexibility, tensile strength, biodegradability, and thermal stability. It was found that the bioplastic/silk substrate exhibited superior results as compared to the bioplastic substrate without silk. Further, a green synthesized CuO/ZnO heterostructure from clove extract was utilized as a receptor layer. It was observed that the device fabricated on a bioplastic/silk substrate outperforms the device with bioplastic substrates at room temperature, as well as at elevated temperature (i.e., 50 °C). The device exhibited an ideal piezotronics behavior demonstrating that the chemiresistive gas sensor with green synthesized CuO/ZnO heterostructures on a bioplastic/silk substrate can be very well used over curvilinear surfaces. Therefore, the sustainable approach toward the development of biodegradable and eco-friendly toxic gas sensors taken in this study can be an alternative to the current high-temperature sensors.

Item Type: Journal Article
Publication: ACS Sustainable Chemistry and Engineering
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to the American Chemical Society.
Keywords: biodegradable gas sensor; bioplastic/silk substrate; chemiresistive gas sensor; green synthesized CuO/ZnO heterostructures; hydrothermal; toxic gas detection
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 19 Jul 2023 10:29
Last Modified: 19 Jul 2023 10:29
URI: https://eprints.iisc.ac.in/id/eprint/82515

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