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2D metal oxides and their heterostructures for gas chemical sensing
(CRC Press, Taylor & Francis Group, 2024) Shingange, K; Dima, Ratshilumela S; Letsoalo, MR; Maluta, EN; Makgwane, PR; Kumar, N; Motaung, DE
This chapter argues the characteristics of two-dimensional (2D) metal oxide (MOX) and their heterostructures for application as chemical gas sensors. It is established that applying 2D MOX and their heterostructures is a favorable advance in enhancing the sensing parameters of gas sensors, including sensitivity, selectivity, and response kinetics. The experimental perspectives coupled with computational calculations perspectives are used to shed an understanding of the performance of these materials when applied as chemical gas sensors. Their weaknesses that may surface when applying them in the real application are also taken into consideration, and these weaknesses also limit their commercialization.