UV-shielding Properties of TiO2-SnO2 Composite Oxide Microspheres Synthesizd via One-step Hydrothermal Method at Low Temperature

doi:10.7503/cjcu20120479

Abstract

Abstract:

Using Ti(SO₄)₂, SnCl₄ and urea as raw materials, TiO₂-SnO₂ composite oxide powders with sphe-rical morphology were synthesized by one-step low temperature hydrothermal method in aqueous solutions. The influences of reaction conditions on the structure of the products were investigated. The obtained samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), energy dispersive X-ray analysis(EDAX) and UV-Vis spectrometry. The results reveal that uniformly dispersed composite oxides with rutile structure are obtained with average diameters of 2 μm when the Ti⁴⁺/Sn⁴⁺ molar ratio is in the range of 6-8 without stirring, the UV absorption of the product is stronger than that of anatase TiO₂, SnO₂ and commodity P25.

Key words: Rutile, TiO₂-SnO₂ composite oxide, UV-shielding, Urea, Low temperature hydrothermal method

CLC Number:

O614

TrendMD:

WANG Yuan-Rui, ZHOU Bing, WANG Zi-Chen, ZHAO Xu. UV-shielding Properties of TiO₂-SnO₂ Composite Oxide Microspheres Synthesizd via One-step Hydrothermal Method at Low Temperature[J]. Chem. J. Chinese Universities, 2012, 33(10): 2146.

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UV-shielding Properties of TiO₂-SnO₂ Composite Oxide Microspheres Synthesizd via One-step Hydrothermal Method at Low Temperature

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