Abstract—Nanometer oxides SnO2 were prepared by constant temperature hydrolysis, microwave hydrolysis, chemical precipitation and solid state reaction, respectively. The oxides were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), UV absorb spectrum and Brunauer–Emmett–Teller (BET) measurement. Photocatalytic properties of nanometer SnO2 were studied in detail. The photocatalytic activities of nanometer oxides were studied using methyl orange (MO) as a mode organic pollutant. The influences of quantities of photocatalysts, photocatalysts doped with different metal ions and pH of MO liquid were studied. It shows that well-crystalled SnO2 with the particle size of 30-40 nm can be prepared by constant temperature hydrolysis sintered at 800℃, and the decoloration of MO reaches 97% at 120min, which shows higher photocatalytic activity for methyl orange (MO) than those made from other methods.
Index Terms—photocatalysis, tin oxide, methyl orange, organic pollutants, nanometer.
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Cite: Hao YUAN and Jiaqiang XU, "Preparation, Characterization and Photocatalytic Activity of Nanometer SnO2 ," International Journal of Chemical Engineering and Applications vol. 1, no. 3, pp. 241-246, 2010.
