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Citation: Zhou Xing-Fu, Chu Dao-Bao, Han Ai-Jie, Gu Jia-Shan, Lin Chang-Jian, Tian Zhong-Qun, Tan Jian-Guang. Electrochemical Dissolution of Pure Titanium and Direct Hydrolysis for Preparation of Nanocrystalline TiO₂[J]. Acta Physico-Chimica Sinica, ;2001, 17(04): 367-371. doi: 10.3866/PKU.WHXB20010418 shu

Electrochemical Dissolution of Pure Titanium and Direct Hydrolysis for Preparation of Nanocrystalline TiO₂

1.
College of Chemistry and Material Science,Anhui Normal University,Wuhu　241000;State Key Laboratory for Physcis Chemistry of Solid Surfaces,Xiamen University,Xiamen　361005

Received Date: 30 September 2000
Available Online: 15 April 2001

Metallic titanium was electrochemically dissoluted in absolute ethanol in the presence of Et4N•Br(as electroconductive additive),The electrolyte solution was then directly hydrolysized to obtain nanocrystalline TiO2.The powder obtained was calcined at 720℃ for 1 h.FTIR,Raman spectra,XRD and TEM were used to investigate the structure and particle size of the powder.Studies showed that the nanocrystalline TiO2 prepared by this method was of monocline structure with high textural stability and narrow size distribution of 10－20 nm,and its Raman spectra showed a shift of about 25 cm－1.The experiments also showed that the product yield could be improved by controlling the temperature under 50－60℃,selecting R4N•Br as conductive additive and preventing titanium anode from being passivated.The electrochemical dissolution of metal anode may be recommanded as a promising technique for the synthesis of nanomaterials.
- Dissolution;Titanium anode;Titanium ethoxide;Hydrolysis;　Nanocrystalline TiO₂　Raman spectra
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Electrochemical Dissolution of Pure Titanium and Direct Hydrolysis for Preparation of Nanocrystalline TiO2

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通讯作者: 陈斌, bchen63@163.com

Electrochemical Dissolution of Pure Titanium and Direct Hydrolysis for Preparation of Nanocrystalline TiO₂