期刊
ACS OMEGA
卷 5, 期 34, 页码 21320-21329出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c02861
关键词
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资金
- Department National Defense
- Innovation for Defence Excellence and Security (IDEaS) program
- NSERC [RGPIN-2016-06717]
Environmental monitoring through gas sensors is paramount for the safety and security of industrial workers and for ecological protection. Graphene is among the most promising materials considered for next-generation gas sensing due to its properties such as mechanical strength and flexibility, high surface to volume ratio, large conductivity, and low electrical noise. While gas sensors based on graphene devices have already demonstrated high sensitivity, one of the most important figures of merit, selectivity, remains a challenge. In the past few years, however, surface functionalization emerged as a potential route to achieve selectivity. This review surveys the recent advances in the fabrication and characterization of graphene and reduced graphene oxide gas sensors chemically functionalized with aromatic molecules and polymers with the goal of improving selectivity toward specific gases as well as overall sensor performance.
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