American Chemical Society
la3c03722_si_001.mp4 (15.36 MB)

Photoelectrochemical Cells with a Pyridine-Anchored Bilayer Photoanode for Water Splitting

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posted on 2024-03-14, 11:36 authored by Kun Tang, Jiang-Yang Shao, Yongli Yan, Yu-Wu Zhong
A dye-sensitized photoanode is prepared by coassembling a Ru complex photosensitizer and a Ru water oxidation catalyst (WOC) on a TiO2 substrate, in which the WOC molecules are immobilized in a layer-by-layer fashion through metal-pyridine coordination with the aid of a bifunctional anchoring and bridging molecule containing multiple pyridine groups. Under visible-light irradiation, an anodic photocurrent of around 200 μA/cm2 has been achieved with O2 and H2 being generated at the photoanode and Pt counter electrode, respectively. The pyridine anchoring strategy provides a simple method to prepare photoelectrodes for applications in photoelectrochemical cells.