Lu Lu, Sun Mingzi, Wu Tong, Lu Qiuyang, Chen Baian, Chan Cheuk Hei, Wong Hon Ho, Huang Bolong
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China.
Research Centre for Carbon-Strategic Catalysis (RC-CSC), The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China.
Small Methods. 2023 Nov;7(11):e2300430. doi: 10.1002/smtd.202300430. Epub 2023 Aug 31.
Solar energy utilization is of great significance to current challenges of the energy crisis and environmental pollution, which benefit the development of the global community to achieve carbon neutrality goals. Hydrogen energy is also treated as a good candidate for future energy supply since its combustion not only supplies high-density energy but also shows no pollution gas. In particular, photocatalytic water splitting has attracted increasing research as a promising method for H production. Recently, single-atom (SA) photocatalysts have been proposed as a potential solution to improve catalytic efficiency and lower the costs of photocatalytic water splitting for H generation. Owing to the maximized atom utilization rate, abundant surface active sites, and tunable coordination environment, SA photocatalysts have achieved significant progress. This review reviews developments of advanced SA photocatalysts for H generation regarding the different support materials. The recent progress of titanium dioxide, metal-organic frameworks, two-dimensional carbon materials, and red phosphorus supported SA photocatalysts are carefully discussed. In particular, the material designs, reaction mechanisms, modulation strategies, and perspectives are highlighted for realizing improved solar-to-energy efficiency and H generation rate. This work will supply significant references for future design and synthesis of advanced SA photocatalysts.
太阳能利用对于当前能源危机和环境污染的挑战具有重要意义，这有利于全球社会实现碳中和目标的发展。氢能也被视为未来能源供应的良好候选者，因为其燃烧不仅提供高密度能量，而且不产生污染气体。特别是，光催化水分解作为一种有前景的制氢方法，已经吸引了越来越多的研究。最近，单原子（SA）光催化剂被认为是提高催化效率和降低光催化水分解制氢成本的潜在解决方案。由于原子利用率最大化、丰富的表面活性位点和可调谐的配位环境，SA光催化剂已经取得了显著进展。本文综述了不同载体材料用于制氢的先进SA光催化剂的发展情况。详细讨论了二氧化钛、金属有机框架、二维碳材料和红磷负载的SA光催化剂的最新进展。特别是，重点介绍了用于提高太阳能到能源效率和制氢速率的材料设计、反应机理、调控策略及展望。这项工作将为未来先进SA光催化剂的设计和合成提供重要参考。
