Gas detection technology has assumed an increasingly pivotal role within human society, spanning domains from biomedicine to environmental monitoring, food safety, and national defense. Compared with solid and liquid samples, gas molecules at lower concentrations can be difficult recognized and have always been a challenge. Surface-enhanced Raman scattering (SERS) has gained widespread adoption for trace analysis by virtue of their good selectivity, high sensitivity and superior enrichment performance of enhanced substrates, which also has significant advantages in gas detection. However, few works have focused on the critical reviews of this fascinating SERS method applied in the field of gas sensing. It is worth noting that some of the reviews seem to be similar in that they all focus on a specific topic, either on environmental monitoring or related to human health. Thus, in this work, recent advances and future challenges of SERS in gas sensing are firstly and systematically reviewed. The basic principles of SERS and its application in gas sensing were comprehensively summarized. Subsequently, SERS substrates applied in gas sensing, including plasmonic metal nanoparticles (PMNPs), metal oxide semiconductor (MOS), metal-organic framework (MOF), MXene, etc. were systematically reviewed. In addition, the applications of SERS method used in the detection of toxic, hazardous gases and gaseous biomarkers were emphasized, such as environmental monitoring, human health and disease diagnosis, food safety, and national defense security. Finally, this paper also discussed the challenges and perspectives of SERS method, which will provide innovative ideas for design, construction and application of SERS sensors in the gas sensing.

中文翻译：

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表面增强拉曼散射在气体传感中的研究进展


气体检测技术在人类社会中发挥着越来越关键的作用，涵盖从生物医学到环境监测、食品安全和国防等领域。与固体和液体样品相比，较低浓度的气体分子可能难以识别，并且一直是一个挑战。表面增强拉曼散射 （SERS） 凭借其良好的选择性、高灵敏度和增强底物的卓越富集性能，在气体检测中也具有显著优势，因此在痕量分析中得到了广泛的应用。然而，很少有作品关注对这种应用于气体传感领域的迷人 SERS 方法的批判性评论。值得注意的是，一些评论似乎很相似，因为它们都专注于一个特定的主题，要么是环境监测，要么是与人类健康有关。因此，在这项工作中，首先系统地回顾了 SERS 在气体传感中的最新进展和未来挑战。全面总结了 SERS 的基本原理及其在气体传感中的应用。随后，系统综述了应用于气体传感的 SERS 衬底，包括等离子体金属纳米颗粒 （PMNP）、金属氧化物半导体 （MOS）、金属有机框架 （MOF）、MXene 等。此外，重点介绍了 SERS 方法在有毒、有害气体和气态生物标志物检测中的应用，如环境监测、人类健康和疾病诊断、食品安全和国防安全。最后，本文还讨论了 SERS 方法面临的挑战和前景，这将为 SERS 传感器在气体传感中的设计、构建和应用提供创新思路。