Summary of positive and negative impacts of interfacial hydrogen bonds on photocatalytic hydrogen evolution. (IMAGE)
Caption
Schematic of changes in the reaction activity associated with variation of water layer thickness on the photocatalyst surface. The H2 formation rate increases with increasing water layers up to three layers. When more than three water layers cover the surface, the liquid-like water overlayers strengthen/harden the interfacial H-bond networks. The hardened interfacial H-bond networks hinder the interfacial proton-coupled hole transfer, resulting in a dramatic decrease in the H2 formation rate.
Credit
Zhongqiu LIN, Toshiki Sugimoto
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Credit must be given to the creator.
License
CC BY