Synthesis, characterization and photocatalytic activity of NaNbO3/ZnO heterojunction photocatalysts
Synthesis, characterization and photocatalytic activity of NaNbO3/ZnO heterojunction photocatalysts
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NaNbO3/ZnO异质结光催化剂的合成、表征及光催化活性
DOI:
10.1016/j.jallcom.2011.06.100
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发表时间:
2011-09
影响因子:
6.2
通讯作者:
Xiangyang Wu
中科院分区:
文献类型:
--
作者:
Hui Xu;Chengtang Liua,;Huaming Li;Yuanguo Xu;Jiexiang Xia;Sheng Yina,;Ling Liu;Xiangyang Wu
A series of NaNbO3/ZnO heteronanostructures were synthesized with the hydrothermal method. Various characterization methods such as X-ray powder diffraction (XRD), scanning electronic microscope (SEM) and energy dispersive X-ray spectrometer (EDS), transmission electron microscope (TEM), X-ray photoelectron spectra (XPS) and diffuse reflectance spectra (DRS) were employed to investigate the structure, morphology and photocatalytic properties. The photocatalytic activity of the catalysts was evaluated by the degradation of methylene blue dye and the highest photocatalytic efficiency was observed when the content of NaNbO3was 10wt.%. The photocatalytic mechanism of the heterojunction was also discussed. The effective transformation of the photoexcited electron and holes restricted the recombination of charges, which was regarded as the main reason of the high photocatalytic activity.
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