期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 7, 期 7, 页码 2301-2307出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ee43965h
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资金
- Brain Korea Plus Program of Ministry of Education, Basic Science Research Program [2012-017247]
- Korea Center for Artificial Photosynthesis (KCAP) - National Research Foundation of Korea [2012M1A2A2671779]
- Korea Institute of Industrial Technology(KITECH) [B0008593] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2009-0093880, 2012M1A2A2671779, 2014R1A2A1A01003266, 2012R1A2A1A01017247] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An exceptionally facile process is presented for in situ formation of zinc chromium layered double hydroxide (ZnCr:LDH) nanosheets on a conducting substrate. Thus, ZnCr:LDH nanosheets were synthesized from a metallic Zn film/fluorine-doped tin oxide (FTO) glass by simply dipping into a Cr nitrate solution for only one minute at room temperature. Then, ZnCr:LDHs were converted into zinc chromium mixed metal oxide (ZnCr:MMO) nanoparticles by calcination. Under visible light irradiation (lambda > 420 nm), the in situ synthesized ZnCr:MMO photoanode exhibited a stable and an order-of-magnitude higher activity for photoelectrochemical water splitting than that of a ZnCr:MMO film fabricated ex situ by electrophoretic deposition of already-synthesized ZnCr:MMO powders. More significant was that it generated anodic photocurrents even without an externally applied bias potential, which is an unprecedented result for an oxide photoanode-driven PEC system working under visible light.
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