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Citation: Zhu Yong-Fa, Zhang Li, Gao Chong, Yao Wen-Qing, Cao Li-Li. The Preparation of Nanosized Anatase TiO₂ Powder by Using TiCl₄ a Precursor[J]. Acta Physico-Chimica Sinica, ;1999, 15(09): 784-788. doi: 10.3866/PKU.WHXB19990903 shu

The Preparation of Nanosized Anatase TiO₂ Powder by Using TiCl₄ a Precursor

1.
Department of Chemistry,Tsinghua University,Beijing 100084

Received Date: 9 October 1998
Available Online: 15 September 1999

Nanosized anatase TiO_2 powder was prepared by using TiCl_4 ethanol solution as a precursor. The distribution of particle size was homogeneous, and the particle size of TiO_2 was about 10 nm after the precursor was calcined at 773 K for 1 h. The gelatinizing mechanism of TiCl_4 in ethanol solution can be described as followings. When TiCl_4 was mixed with ethanol, the former reacted with ethanol to form Ti(OCH_2CH_3) 4 species which during the gelatinizing process, absorbed water from the atmosphere to form Ti(OH)_4 precursor. The formation of inorganic polymer of Ti(OH) 4 was intensified with the increase of gelatinizing time, but the organic component decreased. The formation of anatase TiO_2 can also be promoted by the increase of gelatinizing time.
- Titanium dioxide,
- Sol-gel,
- TiO₂
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沈阳化工大学材料科学与工程学院沈阳 110142

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The Preparation of Nanosized Anatase TiO2 Powder by Using TiCl4 a Precursor

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The Preparation of Nanosized Anatase TiO₂ Powder by Using TiCl₄ a Precursor