Rational design approaches of two-dimensional metal oxides for chemiresistive gas sensors: A comprehensive review
- Authors
- Shin, Hamin; Ahn, Jaewan; Kim, Dong-Ha; Ko, Jaehyun; Choi, Seon-Jin; Penner, Reginald M.; Kim, Il-Doo
- Issue Date
- Nov-2021
- Publisher
- Springer Nature
- Keywords
- 2D materials; Deposition; Nucleation and growth; Oxide; Self-assembly
- Citation
- MRS Bulletin, v.46, no.11, pp.1 - 15
- Indexed
- SCIE
SCOPUS
- Journal Title
- MRS Bulletin
- Volume
- 46
- Number
- 11
- Start Page
- 1
- End Page
- 15
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/140391
- DOI
- 10.1557/s43577-021-00218-w
- ISSN
- 0883-7694
- Abstract
- The emergence of two-dimensional (2D) materials enables enormous progress in the development of high-performance chemical sensors facilitating exotic structural and material properties. In this review, we focus on the rational design and synthesis strategies of various 2D metal oxide-based for chemiresistive gas sensors. We first discuss various synthesis strategies for 2D metal oxides such as thin-film manufacturing, exfoliation of layered metal oxides, templating route using sacrificial layer, and template-free synthesis route to elucidate the basic design principles of metal oxide nanosheets both from the top-down and bottom-up perspectives and their efficacy toward gas sensing applications. Then, we discuss assembly strategies of 2D metal oxide nanosheets for hierarchical and hybrid nanostructures with increased design complexity in terms of morphology and/or composition, which boosted their sensing performances. Finally, we conclude by providing an outlook of development in 2D metal oxides for realizing practical gas sensing devices. Through this article, not only did we elucidate the representative synthesis strategies for 2D metal oxides for applications in gas sensors, but we also provided a rich insight into their fundamental design principles to help propel the future development of high-performance gas sensors.
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