Photocatalytic Activity of Zr Doped ZnO and Its Morphology

A. Vijayabalan, A. Sivakumar, Nadarajan Suresh Babu, A. Amalorpavadoss
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引用次数: 3

Abstract

Doped ZnO with Zr has been obtained by sol-gel method and characterized by powder X-ray diffraction, energy dispersive X-ray spectrum, Scanning electron micrographs, and UV–visible diffuse reflectance and photoluminescence spectroscopy. Powder XRD shows that synthesized Zr doped ZnO has hexagonal wurtzite structure and high crystallinity, DRS reveals that wavelength are shifted from UV region to visible region when Zr doping. PL spectra clearly reveal that the recombinations of electron-hole pair in ZnO are suppressed by Zr doping. Zr-doping enhances the photocatalytic degradation of methylene blue dye than ZnO under visible light.
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Zr掺杂ZnO的光催化活性及其形貌
采用溶胶-凝胶法制备了Zr掺杂ZnO,并用粉末x射线衍射、能量色散x射线能谱、扫描电子显微图、紫外可见漫反射光谱和光致发光光谱对ZnO进行了表征。粉末XRD表明,合成的Zr掺杂ZnO具有六方纤锌矿结构,结晶度高;DRS表明,掺杂Zr后,ZnO的波长从紫外区向可见光区偏移。PL光谱清楚地揭示了Zr掺杂抑制了ZnO中电子-空穴对的复合。在可见光下,zr掺杂对亚甲基蓝染料的光催化降解效果优于ZnO。
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