期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 484, 期 1-2, 页码 410-415出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.04.153
关键词
Semiconductors; Chemical synthesis; X-ray diffraction; Scanning electron microscopy; Photocatalytic activity
资金
- Ministry of Education of China [PCSIRT0644]
- National Science Foundation of China [50821140308]
La-doped ZnO nanowires with different doping concentrations were synthesized via a solvothermal synthesis route, using ethanol as the solvent. The products were characterized by X-ray diffraction (XRD), field scanning electron microscopy (FESEM) together with an energy dispersion X-ray spectrum (EDS) analysis, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), Raman spectrum, X-ray photoelectron spectrum (XPS) and UV-vis spectroscopy. The results of XRD, EDS and XPS revealed that La3+ was successfully doped into ZnO lattice. The observation of TEM and FESEM showed that the obtained La3+-doped ZnO nanowires were homogenous with an average diameter of 15-25 nm. The photocatalytic activity of pure and La3+-doped ZnO samples was studied by the degradation of Rhodannine B (RhB). The result showed that La3+ doping concentration had a remarkable effect on the efficiency of photocatalytic activity, with the optimal doping content being determined to be 2 at% in terms of the photocatalytic activity efficiency. (C) 2009 Elsevier B.V. All rights reserved.
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