Recent advances in energy-saving chemiresistive gas sensors: A review

Abstract

With the tremendous advances in technology, gas-sensing devices are being popularly used in many distinct areas, including indoor environments, industries, aviation, and detectors for various toxic domestic gases and vapors. Even though the most popular type of gas sensor, namely, resistive-based gas sensors, have many advantages over other types of gas sensors, their high working temperatures lead to high energy consumption, thereby limiting their practical applications, especially in mobile and portable devices. As possible ways to deal with the high-power consumption of resistance-based sensors, different strategies such as self-heating, MEMS technology, and room-temperature operation using especial morphologies, have been introduced in recent years. In this review, we discuss different types of energy-saving chemisresitive gas sensors and their application in the fields of environmental monitoring. At the end, the review will be concluded by providing a summary, challenges and future perspectives.

CuxO Nanostructure-Based Gas Sensors for H2S Detection: An Overview

“…Therefore, owing to the higher energy consumption, it is difficult to integrate them into electronic devices. Thus, room-temperature [71,72] or self-powered [73,74] gas sensors are in high demand to overcome the power consumption issues, which allows sensors to be integrated into portable devices [75].…”

Effect of Ag Addition on the Gas-Sensing Properties of Nanostructured Resistive-Based Gas Sensors: An Overview

“…In the area of SMOs-based gas sensors, there are many review papers [26][27][28][29][30][31][32][33][34][35]. However, less attention has been paid to review the effect of noble metals on the gas-sensing performance of SMO-based gas sensors.…”

Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

“…Metal oxide gas sensors are used to sense various toxic gases and vapors [ 1 , 2 ] in many areas [ 3 ]. These sensors are quite popular owing to their low preparation costs, high sensitivity, fast dynamics, high stability, simple operation, and small size [ 4 ]. The general gas sensing mechanism of metal oxide gas sensors stems from the modulation of electrical resistance in the presence of target gases [ 5 ].…”