Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 22, Pages 9070-9073Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja302897b
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Funding
- Ministry of Science and Technology of China [2009CB220001]
- NSFC [50921004, 51002160, 21090343, 51172243]
- IMR SYNL
- Solar Energy Initiative of the Chinese Academy of Sciences (CAS)
- CAS [KJCX2-YW-H21-01]
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We show that in contrast to conventional compound photocatalysts, alpha-sulfur crystals of cyclo-octasulfur (S-8) are a visible-light-active elemental photocatalyst. The alpha-S crystals were found to have the ability not only to generate center dot OH radicals but also to split water in a photoelectrochemical process under both UV-vis and visible-light irradiation. Although the absolute activity obtained was low because of the large particle size and poor hydrophilicity of the alpha-S crystals studied, there is great potential for increasing the activity with the assistance of known strategies such as surface modification, nanoscaling, doping, and coupling with other photocatalysts.
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