期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 10, 页码 3919-3923出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201406566
关键词
hydrogen evolution; photocatalysis; photosynthesis; silicon; water splitting
资金
- Christian Doppler Research Association (Austrian Federal Ministry of Science, Research and Economy)
- Christian Doppler Research Association (National Foundation for Research, Technology and Development)
- OMV Group
- EPSRC [EP/H00338X/2]
- ERC
- Cambridge Trust
- European Commission for a Marie Curie IIF Fellowship [PIIF-GA-2012-328085 RPSII]
- EPSRC [EP/H00338X/2] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H00338X/2, 1235135] Funding Source: researchfish
An efficient, stable and scalable hybrid photo-electrode for visible-light-driven H-2 generation in an aqueous pH 9.2 electrolyte solution is reported. The photocathode consists of a p-type Si substrate layered with a Ti and Ni-containing composite film, which acts as both a protection and electrocatalyst layer on the Si substrate. The film is prepared by the simple drop casting of the molecular single-source precursor, [{Ti-2(OEt)(9)(NiCl)}(2)] (TiNipre), onto the p-Si surface at room temperature, followed by cathodic in situ activation to form the catalytically active TiNi film (TiNicat). The p-Si vertical bar TiNicat photocathode exhibits prolonged hydrogen generation with a stable photocurrent of approximately -5 mA cm(-2) at 0 V vs. RHE in an aqueous pH 9.2 borate solution for several hours, and serves as a benchmark non-noble photocathode for solar H-2 evolution that operates efficiently under neutral-alkaline conditions.
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