Synthesis, characterization and photocatalytic activity of NaNbO3/ZnO heterojunction photocatalysts

被引：37

作者：

Xu, Hui ^{[1
,2
]}

Liu, Chengtang ^{[1
,2
]}

Li, Huaming ^{[1
]}

Xu, Yuanguo ^{[1
]}

Xia, Jiexiang ^{[1
]}

Yin, Sheng ^{[1
]}

Liu, Ling ^{[1
]}

Wu, Xiangyang ^{[2
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Sch Environm, Zhenjiang 212013, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 37期

关键词：

NaNbO3/ZnO; Heterojunction; Photocatalytic; Methylene blue; ZNS NANOSTRUCTURES; OPTICAL-PROPERTIES; FABRICATION; EMISSION; DEGRADATION; DEPOSITION; COMPOSITE; PROPERTY; NANORODS; GROWTH;

D O I：

10.1016/j.jallcom.2011.06.100

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 NaNbO3 was 10 wt.%. 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. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：9157 / 9163

页数：7

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