金属有机框架材料在光催化制氢领域的应用

Application of Metal Organic Framework Materials in the Field of Photocatalytic Hydrogen Production

太阳能光催化分解水是实现绿色、高效生产可持续能源氢气的重要途径之一,而光催化剂的设计和开发在这一过程中起着关键作用。常用的传统半导体光催化剂目前面临的主要挑战包括阳光利用率不足、载流子易复合、活性位点暴露不足等问题,因此,开发新型、高效光催化剂的研究显得尤为重要。具有类半导体行为的金属有机框架(metal-organic frameworks,MOFs)材料,由于其超高的比表面积、孔隙率及高规整度,近年来在光催化产氢领域受到越来越广泛的关注。介绍了MOFs材料的结构特点及在光催化制氢领域中应用的独特优势,基于光催化机理从改善光吸收、促进电荷分离和加速表面反应几个方面,总结了提高MOF基光催化剂活性的策略,并对其应用前景进行了展望。

Solar photocatalytic decomposition of water is one of the important ways to achieve green and efficient production of sustainable energy hydrogen, while the design and development of photocatalysts play a key role in this process. Currently, the main challenges of conventional semiconductor photocatalysts include insufficient sunlight utilization, rapid carrier recombination, and insufficient exposure of active sites. Therefore, the research on new and efficient photocatalysts is particularly important. Metal-organic frameworks(MOFs) with semiconductor-like behavior have received more and more attention in the field of photocatalytic hydrogen production in recent years due to their ultra-high specific surface area, porosity and high regularity. This article introduced the structural characteristics of MOFs materials and their unique advantages in the field of photocatalytic hydrogen production. Based on the mechanism of photocatalysis, strategies for improving the photocatalytic activity of MOF-based photocatalysts were summarized in terms of improving light absorption, promoting charge separation and accelerating surface reactions. Besides, their application prospects were prospected.