Ultraviolet photocatalytic degradation of methyl orange by nanostructured TiO2/ZnO heterojunctions

被引：146
|
作者：
Zha, Ruhua [1 ]
Nadimicherla, Reddeppa [1 ]
Guo, Xin [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Lab Solid State Ion, Wuhan 430074, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 12期
关键词：
ONE-STEP SYNTHESIS; HIGHLY EFFICIENT; NANOCRYSTALLINE TIO2; PHASE-TRANSFORMATION; HYDROGEN-PRODUCTION; ELECTRON-TRANSFER; TITANIUM-DIOXIDE; THIN-FILMS; AG-ZNO; PERFORMANCE;
D O I：
10.1039/c5ta00764j
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：
Nanostructured TiO2/ZnO heterojunctions with the morphologies of hedgehogs and fan blades were synthesized by a solvothermal method and characterized by means of XRD, SEM, TEM, BET, FT-IR, Raman, XPS, UV-vis and PL diffuse reflection spectroscopy. The photocatalytic activities of both TiO2/ZnO hedgehogs and fan blades for the degradation of methyl orange (MO) were explored under UV light; the hedgehogs exhibited the best photocatalytic activity (97% MO degradation within 30 min) owing to the hierarchical nanostructure with a large surface area. The degradation mechanism is discussed based on the band structure. Both heterojunctions are very promising for the degradation of MO from organic dyestuff in engineering practice.
引用
收藏
页码：6565 / 6574
页数：10
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