Eshete Mesfin, Li Xiyu, Yang Li, Wang Xijun, Zhang Jinxiao, Xie Liyan, Deng Linjie, Zhang Guozhen, Jiang Jun
Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 P. R. China.
Department of Industrial Chemistry College of Applied Sciences Nanotechnology Excellence Center Addis Ababa Science and Technology University P.O. Box 16417 Addis Ababa Ethiopia.
Small Sci. 2023 Jan 4;3(3):2200041. doi: 10.1002/smsc.202200041. eCollection 2023 Mar.
Steering charge kinetics is a key to optimizing quantum efficiency. Advancing the design of photocatalysts (ranging from single semiconductor to multicomponent semiconductor junctions) that promise improved photocatalytic performance for converting solar to chemical energy, entails mastery of increasingly more complicated processes. Indeed, charge kinetics become more complex as both charge generation and charge consumption may occur simultaneously on different components, generally with charges being transferred from one component to another. Capturing detailed charge dynamics information in each heterojunction would provide numerous significant benefits for applications and has been needed for a long time. Here, the steering of charge kinetics by modulating charge energy states in the design of semiconductor-metal-interface-based heterogeneous photocatalysts is focused. These phenomena can be delineated by separating heterojunctions into classes exhibiting either Schottky/ohmic or plasmonic effects. General principles for the design and construction of heterojunction photocatalysts, including recent advances in the interfacing of semiconductors with graphene, carbon quantum dots, and graphitic carbon nitride are presented. Their limitations and possible future outlook are brought forward to further instruct the field in designing highly efficient photocatalysts.
电荷动力学调控是优化量子效率的关键。推进光催化剂（从单一半导体到多组分半导体结）的设计以实现将太阳能转化为化学能的光催化性能提升，需要掌握日益复杂的过程。实际上，随着电荷产生和电荷消耗可能同时在不同组分上发生，且电荷通常会从一个组分转移到另一个组分，电荷动力学变得更加复杂。获取每个异质结中详细的电荷动力学信息将为应用带来诸多显著益处，并且长期以来一直是必需的。在此，重点关注在基于半导体 - 金属界面的异质光催化剂设计中通过调制电荷能态来调控电荷动力学。这些现象可以通过将异质结分为表现出肖特基/欧姆或等离子体效应的类别来描述。介绍了异质结光催化剂设计和构建的一般原则，包括半导体与石墨烯、碳量子点和石墨相氮化碳界面的最新进展。提出了它们的局限性和可能的未来展望，以进一步指导该领域设计高效光催化剂。
