Catecholamine-functionalized graphene as a biomimetic redox shuttle for solar water oxidation
作者： Eun Jin Son , Jae Hong Kim , Jong Wan Ko , Chan Beum Park
DOI: 10.1039/C6FD00190D
关键词:
摘要: In natural photosynthesis, solar energy is converted to chemical through a cascaded, photoinduced charge transfer chain that consists of primary and secondary acceptor quinones (i.e., QA QB). This leads an exceptionally high near-unity quantum yield. Inspired by the unique multistep architecture in nature, we have synthesized catecholamine-functionalized, reduced graphene oxide (RGO) film as redox mediator can mimic quinone acceptors photosystem II. We used polynorepinephrine (PNE) redox-shuttling chemical. also it coat (GO) reduce GO RGO. The ligands PNE, which are characterized involving two electrons protons, acted electron facilitated photocatalytic water oxidation. Furthermore, PNE-coated RGO promoted fast separation [Ru(bpy)3]2+ increased activity cobalt phosphate on oxidation more than two-fold. results suggest our bio-inspired strategy for construction forward pathway provide opportunities realize efficient artificial photosynthesis.
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