The presence of toxic and harmful gases utterly dangers human health and environmental well-being. Selective detection of these gases is immediately required to meet the demands of society. A promising and presently thriving area for monitoring volatile organic compounds (VOCs) and combustible gases stems from the evolution of detection strategies meld with metal-oxide-based nano-materials. Even though the prevailing literature in nanoscience covers numerous reports on chemical sensing merged with nanotechnology, a few have focused on gas detection. This review takes the lead to study, categorize, and inspect the progressive gas detection approaches accessible in literature. Each gas sensing technique is analyzed based on the detection principle and is reviewed on various aspects such as gas detection, sensitivity, response /recovery time, sensor parameters, procedural complexity, detection variables, and sensor characteristics. Furthermore, this investigation serves as a valuable reference for researchers to recognize the mechanism behind the gas sensor’s fundamental facets. Concisely, this review elucidates the state of this field and induces/propels further research in this field.

有毒有害气体的存在完全危害人类健康和环境福祉。立即需要对这些气体进行选择性检测以满足社会需求。监测挥发性有机化合物 (VOC) 和可燃气体的一个有前途且目前蓬勃发展的领域源于与基于金属氧化物的纳米材料融合的检测策略的发展。尽管纳米科学领域的主流文献涵盖了大量关于与纳米技术相结合的化学传感的报告，但有一些报告侧重于气体检测。本综述率先研究、分类和检查文献中可获取的渐进式气体检测方法。每种气体传感技术都根据检测原理进行分析，并从气体检测、灵敏度、响应/恢复时间、传感器参数、程序复杂性、检测变量和传感器特性。此外，这项调查为研究人员识别气体传感器基本方面背后的机制提供了宝贵的参考。简而言之，这篇综述阐明了该领域的现状，并引发/推动了该领域的进一步研究。