A bio-inspired electron transfer mediator was incorporated via a Zr⁴⁺ ion linkage into a photoanode assembled from a porphyrin photosensitizer displaying broad spectral coverage in the visible region and a ruthenium water oxidation catalyst. Incorporation of the electron mediator suppressed unwanted charge recombination and facilitated the transfer of charge from aqueous electrolyte to the photoanode, resulting in an increase in the photocurrent. A remarkable enhancement of faradaic efficiency for oxygen evolution upon introduction of the mediator was observed in the photoelectrochemical cell.

中文翻译：

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光系统II的生物启发模型：电子介质的超分子组装，由卟啉光敏剂和钌分子催化剂共同敏化为SnO _2光阳极†

通过Zr ⁴⁺离子键将受生物启发的电子转移介体并入由卟啉光敏剂组装而成的光阳极中，该卟啉光敏剂在可见光区域和钌水氧化催化剂中显示出较宽的光谱覆盖范围。引入电子介体抑制了不希望的电荷复合，并促进了电荷从水性电解质转移到光阳极，导致光电流增加。引入介体后，在光电化学电池中观察到法拉第效率的显着提高。