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Recent Advances in Gas and Humidity Sensors Based on 3D Structured and Porous Graphene and Its Derivatives
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-09-16 , DOI: 10.1021/acsmaterialslett.0c00355 Haojun Ding 1 , Yaoming Wei 1 , Zixuan Wu 1 , Kai Tao 2 , Minghui Ding 3 , Xi Xie 1 , Jin Wu 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-09-16 , DOI: 10.1021/acsmaterialslett.0c00355 Haojun Ding 1 , Yaoming Wei 1 , Zixuan Wu 1 , Kai Tao 2 , Minghui Ding 3 , Xi Xie 1 , Jin Wu 1
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Compared with two-dimensional (2D) graphene sheets, recently, three-dimensional (3D) structured and porous graphene has attracted much attention in gas and humidity sensing owing to its increased specific surface area, abundant reaction sites, and superior sensing performance. This review begins with the introduction of the device configurations and working mechanisms of 3D graphene-based gas sensors, followed by the elaboration of various synthesis strategies of 3D graphene. In addition to the gas-transducing properties of 3D and suspended graphene, the modification effect of metal oxides, small molecules, conductive polymers, noble metal nanoparticles, 2D materials, etc. on the gas-sensing performance of 3D graphene is also systematically discussed. 3D structured graphene not only performs as excellent gas-sensing material but also shows great advantages in humidity sensing due to its porous structure and a large number of adsorption sites for moisture. The humidity-sensing mechanism is elucidated to reveal the reactions between graphene and water molecules, followed by the introduction of devices. Finally, the existing key challenges that hinder the further development and practical application of 3D graphene-based gas/humidity sensors are presented, followed by proposing the future perspectives.
中文翻译：
基于3D结构化多孔石墨烯及其衍生物的气体和湿度传感器的最新进展
与二维（2D）石墨烯片相比，近来，由于其比表面积增加，反应位点丰富和优越的感测性能，三维（3D）结构和多孔石墨烯在气体和湿度感测中引起了很多关注。这篇综述首先介绍了基于3D石墨烯的气体传感器的器件配置和工作机制，然后详细阐述了各种3D石墨烯的合成策略。除了3D和悬浮石墨烯的气体传导特性外，还系统地讨论了金属氧化物，小分子，导电聚合物，贵金属纳米颗粒，2D材料等对3D石墨烯的气敏性能的改性作用。3D结构的石墨烯不仅具有出色的气体传感性能，而且由于其多孔的结构和大量的水分吸附位，在湿度传感方面也显示出巨大的优势。阐明了湿度感应机制，以揭示石墨烯与水分子之间的反应，然后引入设备。最后，提出了阻碍基于3D石墨烯的气体/湿度传感器的进一步开发和实际应用的现有关键挑战，然后提出了未来的观点。
更新日期：2020-11-02
中文翻译：
基于3D结构化多孔石墨烯及其衍生物的气体和湿度传感器的最新进展
与二维（2D）石墨烯片相比，近来，由于其比表面积增加，反应位点丰富和优越的感测性能，三维（3D）结构和多孔石墨烯在气体和湿度感测中引起了很多关注。这篇综述首先介绍了基于3D石墨烯的气体传感器的器件配置和工作机制，然后详细阐述了各种3D石墨烯的合成策略。除了3D和悬浮石墨烯的气体传导特性外，还系统地讨论了金属氧化物，小分子，导电聚合物，贵金属纳米颗粒，2D材料等对3D石墨烯的气敏性能的改性作用。3D结构的石墨烯不仅具有出色的气体传感性能，而且由于其多孔的结构和大量的水分吸附位，在湿度传感方面也显示出巨大的优势。阐明了湿度感应机制，以揭示石墨烯与水分子之间的反应，然后引入设备。最后，提出了阻碍基于3D石墨烯的气体/湿度传感器的进一步开发和实际应用的现有关键挑战，然后提出了未来的观点。
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