Room Temperature Gas Sensor Based on Reduced Graphene Oxide for Environmental Monitoring

Abstract

Now a days, considerable attention has been paid for advance, effective, and stable metal free cost effective gas sensors, because metal oxide semiconductors (MOS) are extensively used as gas sensor due to its superb sensitivity towards gases. However, MOS have some shortfall, such as poor selectivity, as well as require external stimuli such as ultraviolet light, high operating temperature, which hindered their practical application. Graphene oxide (GO) based sensors have attracted plenty of consideration due to their exclusive structures and properties, unique sensing performances, and room temperature working condition, which reduces the power consumption. Therefore, GO-based sensors have been treated as an auspicious candidate in current material science research. However, low sensitivity and high recovery time of GO also need to further modified to satisfy the specific applications, such as human breath-based medical diagnosis, harsh condition, environment detection and so forth. Therefore, nitrogen doped reduced graphene oxide, which are the modified graphene species functionalized with different oxygen and nitrogen groups that offer a more adsorption sites for gas and enhancing the sensitivity of GO. This chapter therefore explores and summarizes the recent efforts in the area of sensing using nitrogen doped reduced graphene oxide. © Springer Nature Switzerland AG 2021. All rights are reserved.