| Au/TiO2的制备及其光催化氧化丙烯的研究 |
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| 引用本文： | 毛立群,冯彩霞,金振声,张治军,党鸿辛.Au/TiO2的制备及其光催化氧化丙烯的研究[J].影像科学与光化学,2005,23(1). |
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| 作者姓名： | 毛立群 冯彩霞 金振声 张治军 党鸿辛 |
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| 作者单位： | 河南大学,特种功能材料重点实验室,河南,开封,475001;河南大学,特种功能材料重点实验室,河南,开封,475001;河南大学,特种功能材料重点实验室,河南,开封,475001;河南大学,特种功能材料重点实验室,河南,开封,475001;河南大学,特种功能材料重点实验室,河南,开封,475001 |
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| 摘 要： | 采用浸渍法制备了Au/TiO2光催化剂,使用X射线能谱(XPS)和透射电子显微镜(TEM)对样品进行了表征.结果表明,Au颗粒的尺度约为4—6nm;Au4f7/2的结合能为83.3eV,与Au0的标准峰位(84.0eV)相比,向低结合能方向移动了0.7eV,使其表现出俘获电子的特性.以丙烯的光催化氧化为指标反应,对制备的Au/TiO2的活性进行了评价,结果显示,Au/TiO2的光催化活性明显高于单一TiO2的,且当Au的担载量在0.1—5.0%范围内变化时,催化活性随着担载量的增加而显著增加.
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| 关 键 词： | Au/TiO2 XPS 光催化 丙烯 |
Preparation of Au/TiO2 and Its Photocatalytic Property Towards Propylene |
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| Abstract: | Au/TiO_2 photocatalyst was prepared by means of dipping method. X-ray electron spectroscopy (XPS) and transmission electron microscope (TEM) were used to characterize the as-prepared Au/TiO_2. The testing results indicated that the average size of deposited Au was 4-6 nm, and that the binding energy of Au 4f_(7/2) was located at 83.3 eV, 0.7 eV lower than that of bulk Au (84.0 eV). With photocatalytic oxidation of propylene as model reaction, the photocatalytic property of Au/TiO_2 was measured. The experimental result revealed that the photoactivity of Au/TiO_2 was higher than that of TiO_2, and that the activity of Au/TiO_2 increased as depositing amount of Au increased from 0.1% to 5.0%. |
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| Keywords: | Au/TiO_2 XPS photocatalysis propylene |
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