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掺铁TiO₂用于NO₂^-光催化降解研究

Heterogeneous Photocatalytic Reactions of Nitrite Oxidation on Iron-Doped Titania Prepared by Sol-Gel Method

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【Author】 GAO YuanSchool of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275,China, XU An\|wu, LIU Han\|qin

【机构】中山大学化学与化学工程学院!广东广州510275；

【摘要】采用溶胶凝胶法制备了掺杂铁的TiO2 粉末 ,并用XRD、SEM、UV Vis漫反射光谱等技术手段考察了掺入铁TiO2 粒子形态的变化 ,以及掺杂与否对氧化降解NO-2 的影响 .研究结果表明 ,铁的掺入可影响TiO2 的结构相变及粒子大小 ,并且发现掺杂后TiO2 对NO-2 的氧化活性显著提高 ,在掺杂量 3 0 %时具有最佳活性 .更多还原

【Abstract】 The iron\|doped titania catalysts were prepared by sol\|gel method, and characterized by XRD, UV\|Vis diffuse reflection spectra. Their photocatalytic activities were tested by degradation of nitrite.The results indicated that the iron\|doped samples cause changes in crystalline phase and particle sizes of the titania. Samples containing low amount of iron (3 0%) were more effective for nitrite oxidation than pure TiO\-2.更多还原