Journal
MATERIALS LETTERS
Volume 111, Issue -, Pages 217-220Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.08.081
Keywords
Solar energy materials; ZnO; Carbon doping; Microstructure; Photocatalytic
Funding
- National Key Technology RD Program [2013BAF09802]
- Innovation Team Assistance Foundation of Shaanxi Province [2013KCT-06]
- China Postdoctoral Science Foundation [2013M530414]
- Shenzhen Key Laboratory of Special Functional Materials [1201207]
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Carbon (C) doped Zinc oxide (ZnO) with a porous structure is obtained by calcination of the powders prepared by hydrothermal reaction of zinc gluconate. The prepared ZnO powders are characterized by X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, ultraviolet-visible (UV-vis) diffuse reflectance spectra. The visible-light photocatalytic activity is evaluated by photocatalytic decomposition of the dye Rhodamine B (RhB) in aqueous solution. Results show that the covalent carbon incorporated into the 0 site of ZnO lattice causes the lattice compression. The porous C-doped ZnO consisted of many oblong nanocrystals. The photo-response of the C-doped ZnO expands to the visible region up to 800 nm with lower band gap energy. The C-doped ZnO exhibit a significantly enhanced photocatalytic activity due to the improved absorption in the UV and visible-light region. (C) 2013 Elsevier B.V. All rights reserved.
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