期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 699, 期 -, 页码 907-913出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.01.036
关键词
One-pot; Hollow spheres; Photocatalysis; Surface photovoltage; Transient photovoltage
资金
- National Natural Science Foundation of China [51572106]
- National Basic Research Program of China (973 Program) [2013CB632403]
- Science and Technology Developing Funding of Jilin Province [20150203009GX]
In this study, Ce-doped ZnO photocatalysts are successfully prepared by using a simple and facile one-pot water bath method. The as-prepared samples are characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-Vis) diffuse spectroscopy and Brunauer-Emmett-Teller (BET) surface area analysis. It is found that the as-synthesized Ce-doped ZnO possessed hollow porous structure, high surface areas and large pore volumes. The photocatalytic degradation efficiency (99%) of methyl orange (MO) with an optimal molar ratio of 0.3% Ce-doped ZnO is realized. The separation behavior of photogenerated electrons-holes pairs was investigated by surface photovoltage (SPV) and transient photovoltage (TPV) technique. The results illuminate that Ce element in Ce-doped ZnO tremendously promotes the separation of charges and inhibits the recombination of photogenerated charge carriers, corresponding to the excellent photo catalytic performance. (C) 2017 Elsevier B.V. All rights reserved.
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