Influence of Heat Treated Temperature on the Photoactivating Property of Nanometer ZnO/SnO₂ Powder

Abstract:

Nanometer ZnO/SnO₂ powder was prepared by coprecipitating method with SnCl₄•5H₂O, ZnNO₃•6H₂O, HCl, NaOH as raw materials. Influence of heat treated temperature on the photoactivating property and structure and material phase of nanometer ZnO/SnO₂ (ZnO/SnO₂=4/1(mol ratio)) compound photocatalyst powder was studied by X-ray diffraction (XRD) and transmission electron microscope(TEM) and the degradation of methyl orange solution as a reaction model. The results show that the photoactivating activity of ZnO/SnO₂ powder starts increasing and then decreasing when heat treated temperature increases. The photoactivating activity of ZnO/SnO₂ powder is maximum, particle size is 20-30 nanometer and dispersion is good when heat treated temperature is 650°C. The photocatalytic activity of ZnO/SnO₂ powder gradually reduces, dispersion is not good and there is Zn₂SnO₄ crystal phase when heat treated temperature is above 750°C.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 126-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.126
• Online since: June 2012
• Authors: Xin You Huang, Chun Hua Gao, Zhi Gang Chen
• Keywords: Coprecipitation, Methyl Orange (MO), Nanometer ZnO/SnO₂ Powder, Photocatalytic

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