Cao Xuankai, Gao Yan, Li Yanteng, Weragoda Delika M, Tian Guohong, Zhang Wenke, Zhang Zhanchao, Zhao Xudong, Chen Baoming
Shandong Technology Innovation Center of Carbon Neutrality, School of Thermal Engineering, Shandong Jianzhu University Jinan 250013 China
Shandong Province Jinan Ecological and Environmental Monitoring Center Jinan 250101 China.
RSC Adv. 2023 Aug 14;13(35):24393-24411. doi: 10.1039/d3ra04110g. eCollection 2023 Aug 11.
Hydrogen energy is considered to be the most potential "ultimate energy source" due to its high combustion calorific value, cleanliness, and pollution-free characteristics. Furthermore, the production of hydrogen the electrolysis of water has the advantages of simplicity, high efficiency, environmentally safe, and high-purity hydrogen. However, it is also associated with issues such as high-power consumption for the reaction and limited large-scale application of noble metal catalysts. Metal-organic frameworks (MOFs) are porous composite materials composed of metal ions and organic functional groups through orderly coordination with large specific surface areas and large porosity. Herein, we focus on the research status of MOFs and their transition metal derivatives for electrocatalytic water splitting to produce hydrogen and briefly describe the reaction mechanism and evaluation parameters of the electrocatalytic hydrogen evolution and oxygen evolution reactions. Furthermore, the relationship between the catalytic behavior and catalytic activity of different MOF-based catalysts and their morphology, elemental composition, and synthetic strategy is analyzed and discussed. The reasons for the excellent activity and poor stability of the original MOF materials for the electrolysis of water reaction are shown through analysis, and using various means to improve the catalytic activity by changing the electronic structure, active sites, and charge transfer rate, MOF-based catalysts were obtained. Finally, we present perspectives on the future development of MOFs for the electrocatalytic decomposition of water.
氢能因其高燃烧热值、清洁无污染的特性，被认为是最具潜力的“终极能源”。此外，通过水电解制氢具有工艺简单、效率高、环境友好且氢气纯度高的优点。然而，它也存在反应耗电量大以及贵金属催化剂大规模应用受限等问题。金属有机框架材料（MOFs）是由金属离子和有机官能团通过有序配位构成的多孔复合材料，具有较大的比表面积和孔隙率。在此，我们重点关注MOFs及其过渡金属衍生物用于电催化水分解制氢的研究现状，并简要描述电催化析氢和析氧反应的机理及评价参数。此外，还分析和讨论了不同MOF基催化剂的催化行为与催化活性及其形态、元素组成和合成策略之间的关系。通过分析揭示了原始MOF材料用于水电解反应时活性优异但稳定性差的原因，并利用各种手段通过改变电子结构、活性位点和电荷转移速率来提高催化活性，从而获得了MOF基催化剂。最后，我们对MOFs用于电催化水分解的未来发展提出了展望。
