Hossain Mohammad Kamal, Hendi Abdulmajeed, Asim Nilofar, Alghoul Mohammad Ahmed, Rafiqul Islam Mohammad, Hussain Syed Muhammad Shakil
Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
Physics Department & IRC-Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
Chem Asian J. 2024 Aug 19;19(16):e202300529. doi: 10.1002/asia.202300529. Epub 2023 Sep 20.
Chemiresistive sensing lies in its ability to provide fast, accurate, and reliable detection of various gases in a cost-effective and non-invasive manner. In this context, graphene-functionalized metal oxides play crucial role in hydrogen gas sensing. However, a cost-effective, defect-free, and large production schemes of graphene-based sensors are required for industrial applications. This review focuses on graphene-functionalized metal oxide nanostructures designed for gaseous molecules detection, mainly hydrogen gas sensing applications. For the convenience of the reader and to understand the role of graphene-metal oxide hybrids (GMOH) in gas sensing activities, a brief overview of the properties and synthesis routes of graphene and GMOH have been reported in this paper. Metal oxides play an essential role in the GMOH construct for hydrogen gas sensing. Therefore, various metal oxides-decorated GMOH constructs are detailed in this review as gas sensing platforms, particularly for hydrogen detection. Finally, specific directions for future research works and challenges ahead in designing highly selective and sensitive hydrogen gas sensors have been highlighted. As illustrated in this review, understanding of the metal oxides-decorated GMOH constructs is expected to guide ones in developing emerging hybrid nanomaterials that are suitable for hydrogen gas sensing applications.
化学电阻传感在于它能够以经济高效且非侵入性的方式对各种气体进行快速、准确且可靠的检测。在此背景下，石墨烯功能化金属氧化物在氢气传感中发挥着关键作用。然而，工业应用需要基于石墨烯的传感器具备经济高效、无缺陷且大规模的生产方案。本综述聚焦于为气态分子检测（主要是氢气传感应用）而设计的石墨烯功能化金属氧化物纳米结构。为方便读者并理解石墨烯 - 金属氧化物杂化物（GMOH）在气体传感活动中的作用，本文已对石墨烯和GMOH的性质及合成路线进行了简要概述。金属氧化物在用于氢气传感的GMOH结构中起着至关重要的作用。因此，本综述详细介绍了各种金属氧化物修饰的GMOH结构作为气体传感平台，特别是用于氢气检测。最后，强调了未来研究工作的具体方向以及设计高选择性和高灵敏度氢气传感器面临的挑战。如本综述所示，对金属氧化物修饰的GMOH结构的理解有望指导人们开发适用于氢气传感应用的新型杂化纳米材料。
