An overview of hetero-structured nanomaterials based on metal oxides for gas sensing applications
Author(s):
Smruti S. Dhola, Ankit R. Patel
Keywords:
Nanomaterial Heterostructure, gas sensor, Sensing material and sensing mechanism
Abstract
Nanomaterial based heterostructures have become a promising avenue for enhancing gas sensing technologies due to their unique structural and electronic properties. This review paper provides a comprehensive overview of recent advances in the synthesis methods and gas sensing applications of nanomaterial heterostructures. Various synthesis techniques, including chemical vapor deposition, hydrothermal methods and sol-gel processes, are discussed, highlighting their impact on the structural and functional attributes of the heterostructures. The paper emphasizes the importance of interface engineering, morphology control and material composition in optimizing the gas sensing performance. Key gas sensing mechanisms, including adsorption-desorption dynamics, charge transfer processes, and the role of heterojunctions are elucidated. Furthermore, the review explores the sensitivity, selectivity, response time, and stability of different nanomaterial-based heterostructures in detecting gases such as ammonia, nitrogen dioxide, and volatile organic compounds. Finally, the paper identifies current challenges and future research directions in the field, aiming to direct the creation of the upcoming generation of gas sensors with improved performance metrics.
Article Details
Unique Paper ID: 166260

Publication Volume & Issue: Volume 11, Issue 2

Page(s): 360 - 362
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