物理化学学报 >> 1998, Vol. 14 >> Issue (05): 424-428.doi: 10.3866/PKU.WHXB19980508

研究论文 上一篇    下一篇

用高温热水解法制备高活性TiO2纳米微晶光催化剂

赵文宽, 方佑龄, 董庆华, 王怡中   

  1. 武汉大学化学系,武汉 430072|中国科学院生态环境研究中心,环境水化学国家重点实验室,北京 100085
  • 收稿日期:1997-08-01 修回日期:1997-12-08 发布日期:1998-05-15
  • 通讯作者: 赵文宽

Preparation of High Photocatalytic Activity Nano-crystalline Titanium Dioxide by High Temperature Thermo-Hydrolysis Method

Zhao Wen-Kuan, Fang You-Ling, Dong Qing-Hua, Wang Yi-Zhong   

  1. Department of Chemistry,Wuhan University,Wuhan 430072|State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085
  • Received:1997-08-01 Revised:1997-12-08 Published:1998-05-15
  • Contact: Zhao Wen-Kuan

摘要:

采用钛酸四丁酯在有机溶剂中高温热水解与结晶同时进行的方法,制备了二氧化钛纳米微晶光催化剂.以XRD、BET、TEM、TG和DTA等方法对获得的微晶进行了表征.所制得的TiO2纳米微晶平均值径约为12nm,比表面积在100m2•g-1以上,并能在很宽的煅烧温度范围内保持锐钛矿型晶体结构.将它应用于光分解甲基橙,具有高的光催化活性.

关键词: 二氧化钛, 光催化剂, 制备和表征

Abstract:

Nano-crystalline titanium oxide(TiO2) was prepared by the high-temperature thermo-hydrolysis method and crystallized in organic media. Microcrystalline was characterized by TG-DTA, XRD, BET and TEM methods, the average diameter of this titanium dioxide is 12nm with the surface area greater than 100m2•g-1, and the crystal is of anatase structure over a relative wide temperature range. The photocatalytic activity of this titanium oxide was determinated by measuring the rate of degradation of methyl orange and the rate of formation of degradation product. The results showed that this titanium oxide has much higher photocatalytic activity.

Key words: Titanium dioxide, Photocatalysts, Preparation and Characterization