Solar Water Splitting with a Hydrogenase Integrated in Photoelectrochemical Tandem Cells.

Solar Water Splitting with a Hydrogenase Integrated in Photoelectrochemical Tandem Cells.
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DOI:
10.1002/anie.201805027
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发表时间:
2018-08-13
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Reisner E
Reisner E
中科院分区:
其他
文献类型:
--
作者:
Nam DH;Zhang JZ;Andrei V;Kornienko N;Heidary N;Wagner A;Nakanishi K;Sokol KP;Slater B;Zebger I;Hofmann S;Fontecilla-Camps JC;Park CB;Reisner E

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Hydrogenases (H2ases) are benchmark electrocatalysts for H2 production, both in biology and (photo)catalysis in vitro. We report the tailoring of a p‐type Si photocathode for optimal loading and wiring of H2ase through the introduction of a hierarchical inverse opal (IO) TiO2 interlayer. This proton‐reducing Si|IO‐TiO2|H2ase photocathode is capable of driving overall water splitting in combination with a photoanode. We demonstrate unassisted (bias‐free) water splitting by wiring Si|IO‐TiO2|H2ase to a modified BiVO4 photoanode in a photoelectrochemical (PEC) cell during several hours of irradiation. Connecting the Si|IO‐TiO2|H2ase to a photosystem II (PSII) photoanode provides proof of concept for an engineered Z‐scheme that replaces the non‐complementary, natural light absorber photosystem I with a complementary abiotic silicon photocathode.
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