Au/TiO2的制备及其光催化氧化丙烯的研究

doi:10.7517/j.issn.1674-0475.2005.01.61

影像科学与光化学 ›› 2005, Vol. 23 ›› Issue (1): 61-65.DOI: 10.7517/j.issn.1674-0475.2005.01.61

Au/TiO₂的制备及其光催化氧化丙烯的研究

毛立群, 冯彩霞, 金振声, 张治军, 党鸿辛

河南大学, 特种功能材料重点实验室, 河南, 开封, 475001

收稿日期:2004-07-12 修回日期:2004-09-08 出版日期:2005-01-23 发布日期:2005-01-23
通讯作者: 毛立群,女,E-mail:mlq@henu.edu.cn.
基金资助:
国家自然科学基金(20071010).

Preparation of Au/TiO₂ and Its Photocatalytic Property Towards Propylene

MAO Li-qun, FENG Cai-xia, JIN Zhen-sheng, ZHANG Zhi-jun, DANG Hong-xin

Lab of Special Functional Material, Henan University, Kaifeng 475001, Henan, P. R. China

Received:2004-07-12 Revised:2004-09-08 Online:2005-01-23 Published:2005-01-23

摘要/Abstract

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;Au4f_7/2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.

关键词: Au/TiO₂, XPS, 光催化, 丙烯

Abstract: Au/TiO₂ photocatalyst was prepared by means of dipping method. X-ray electron spectroscopy(XPS)and transmission electron microscop(TEM)were used to characterize the as-prepared Au/TiO₂. 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/TiO₂ was measured. The experimental result revealed that the photoactivity of Au/TiO₂ was higher than that of TiO₂, and that the activity of Au/TiO₂ increased as depositing amount of Au increased from 0.1% to 5.0%.

Key words: Au/TiO₂, XPS, photocatalysis, propylene

中图分类号:

O643

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): 61-65.

MAO Li-qun, FENG Cai-xia, JIN Zhen-sheng, ZHANG Zhi-jun, DANG Hong-xin. Preparation of Au/TiO₂ and Its Photocatalytic Property Towards Propylene[J]. Imaging Science and Photochemistry, 2005, 23(1): 61-65.

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Au/TiO₂的制备及其光催化氧化丙烯的研究

Preparation of Au/TiO₂ and Its Photocatalytic Property Towards Propylene

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