Atomically Dispersed Catalytic Sites: A New Frontier for Cocatalyst/Photocatalyst Composites toward Sustainable Fuel and Chemical Production

Photocatalysis delivers a promising pathway toward the clean and sustainable energy supply of future. However, inefficiency photon absorption, rapid recombination photogenerated electron-hole pairs, especially limited active sites for catalytic reactions result in unsatisfactory performances photocatalytic materials. Single-atom photocatalysts (SAPCs), which metal atoms are individually isolated stably anchored on support materials, allow maximum atom utilization possess distinct properties due to unique geometric electronic features unsaturated sites. Very recently, constructing SAPCs has emerged as new avenue promoting efficiency production fuels chemicals via photocatalysis. In this review, we summarize recent development frontier cocatalyst/photocatalyst composites water splitting. This begins with an introduction typical structures SAPCs, followed by detailed discussion synthetic strategies that applicable SAPCs. Thereafter, applications boost splitting outlined. Finally, challenges prospects future summarized.