Bio-inspired model of photosystem II: supramolecular assembly of an electron mediator into an SnO2 photoanode co-sensitized by a porphyrin photosensitizer and ruthenium molecular catalyst

Bio-inspired model of photosystem II: supramolecular assembly of an electron mediator into an SnO2 photoanode co-sensitized by a porphyrin photosensitizer and ruthenium molecular catalyst
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光系统 II 的仿生模型:将电子介体超分子组装到由卟啉光敏剂和钌分子催化剂共同敏化的 SnO2 光阳极中

DOI:
10.1039/c7se00515f
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发表时间:
2018-02
影响因子:
5.6
通讯作者:
Cao Yang
Cao Yang
中科院分区:
材料科学3区
文献类型:
--
作者:
Na Yong;Miao Siwen;Zhou Li;Wei Peicheng;Cao Yang

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仿生电子转移介体通过 Zr4+ 离子键合并到由在可见光区域显示宽光谱覆盖的卟啉光敏剂和钌水氧化催化剂组装而成的光阳极中。电子介体的加入抑制了不需要的电荷复合,并促进电荷从水性电解质转移到光电阳极,从而导致光电流增加。在光电化学电池中观察到引入介体后,析氧的法拉第效率显着提高。
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.
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