Recent Advances on Graphene-Based Gas Sensors
Recent Advances on Graphene-Based Gas Sensors
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DOI：
10.1134/s0036024420100167
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发表时间：
2020-10-01
影响因子：
0.7
通讯作者：
Rita Kakkar
中科院分区：
文献类型：
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作者：
Jogender;Mandeep;Rita Kakkar
由于其前所未有的结构，电子和机械性能，石墨烯，碳原子的单原子片，被有效地用于检测化学物种。本文研究了吸附气体分子，主要是有毒气体（NO_2、NO、NH_3、CO、CO_2、HF、H_2S等）。和挥发性有机化合物（VOCs）的研究进展。石墨烯的气敏能力通过掺杂杂原子来增强，并且用许多基团如羟基、环氧基等对其进行官能化。通过石墨烯和改性石墨烯与金属和金属氧化物纳米颗粒耦合来检测气体分子的最新进展，由于高表面积和增加的电子电荷转移，其具有比金属和金属氧化物纳米颗粒更高的响应和更好的灵敏度，也有报道。
Owing to its unprecedented structural, electronic and mechanical properties, graphene, a single-atomic sheet of carbon atoms, is effectively used to detect chemical species. In this work, adsorption of gaseous molecules, mainly toxic (NO2, NO, NH3, CO, CO2, HF, H2S, etc.) and volatile organic compounds (VOCs), on graphene and modified graphene (GO, rGO) has been reviewed. The gas sensing ability of graphene is enhanced by doping with heteroatoms, and functionalizing it with many groups, such as hydroxyl, epoxy, etc. Recent advances in detection of gaseous molecules by graphene and modified graphene, coupled with metal and metal oxide nanoparticles, which have high response and better sensitivity than metal and metal oxide NPs because of high surface area and increased electronic charge transfer, have also been reported.