Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 8, Pages 2491-2497Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14575a
Keywords
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Funding
- National Basic Research Development Program of China [2010CB934500, 2012CB825800]
- National Natural Science Foundation of China [11275137, 11179032, 10805054]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fund for Innovative Research Teams of Jiangsu Higher Education Institutions
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By coupling Ti-doping and oxygen vacancies in hematite nanostructures, an efficient photoelectrode for solar water oxidation was prepared which showed a high photocurrent of 2.25 mA cm(-2) at 1.23 V vs. RHE and a remarkable maximum value of 4.56 mA cm(-2) at 1.6 V vs. RHE at a relatively low activation temperature of 550 degrees C. In addition, the partial oxygen pressure range suitable to produce oxygen vacancies in Ti-doped hematite could be expanded to a wide region compared to that in undoped hematite, which was critical to the photoelectrode production in practical applications. The facile way by coupling independently developed methods with the cumulative effect stands for an effective strategy for efficient solar water oxidation.
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