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Cho, Seungho
Metal Oxide DEsign Laboratory (MODEL)
Research Interests
  • Metal Oxide Crystal Growth

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Carbon-doped ZnO nanostructures synthesized using vitamin C for visible light photocatalysis

Cited 57 times inthomson ciCited 60 times inthomson ci
Title
Carbon-doped ZnO nanostructures synthesized using vitamin C for visible light photocatalysis
Other Titles
Carbon-doped ZnO nanostructures synthesized using vitamin C for visible light photocatalysis
Author
Cho, SeunghoJang, Ji-WookLee, Jae SungLee, Kun-Hong
Issue Date
2010-11
Publisher
ROYAL SOC CHEMISTRY
Citation
CRYSTENGCOMM, v.12, no.11, pp.3929 - 3935
Abstract
We report the synthesis of carbon-doped zinc oxide nanostructures using vitamin C, and their visible light photocatalytic activity. Amorphous/crystalline vitamin C-ZnO (VitC-ZnO) structures were obtained from a solution of zinc nitrate hexahydrate, HMT, and vitamin C through heating at 95 degrees C for 1 h. VitC-ZnO structures were calcined in air at 500 degrees C for 2 h to create C-doped ZnO nanostructures. Calcined structures were polycrystalline, with an average crystal domain size of 7 nm. EDS, XPS, and XRD analysis revealed the substitution of oxygen with carbon and the formation of Zn-C bonds in the C-doped ZnO nanostructures. The carbon concentrations, in the form of carbide, were controlled by varying the concentrations of vitamin C (more than 1 mM) added to reaction solutions. On the basis of these experimental results, we propose a possible formation mechanism for C-doped ZnO nanostructures. The C-doped ZnO nanostructures exhibited visible light absorption bands that were red-shifted relative to the UV exciton absorption of pure ZnO nanostructures. The visible light (lambda >= 420 nm) photocatalytic activities of C-doped ZnO nanostructures were much better than the activities of pure ZnO nanostructures
URI
https://scholarworks.unist.ac.kr/handle/201301/12840
URL
http://pubs.rsc.org/en/Content/ArticleLanding/2010/CE/c0ce00063a#!divAbstract
DOI
10.1039/c0ce00063a
ISSN
1466-8033
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