物理化学学报 >> 2001, Vol. 17 >> Issue (04): 367-371.doi: 10.3866/PKU.WHXB20010418

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电化学溶解钛金属直接水解法制备纳米TiO2

周幸福;褚道葆;韩爱杰;顾家山;林昌健;田中群;谭建光   

  1. 安徽师范大学化学与材料科学学院,芜湖 241000;厦门大学材料科学系 化学系 固体表面物理化学国家重点实验室,厦门 361005
  • 收稿日期:2000-09-30 修回日期:2000-12-04 发布日期:2001-04-15
  • 通讯作者: 周幸福 E-mail:zxf@mail.ahnu.edu.cn

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

Zhou Xing-Fu;Chu Dao-Bao;Han Ai-Jie;Gu Jia-Shan;Lin Chang-Jian;Tian Zhong-Qun;Tan Jian-Guang   

  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:2000-09-30 Revised:2000-12-04 Published:2001-04-15
  • Contact: Zhou Xing-Fu E-mail:zxf@mail.ahnu.edu.cn

关键词: 电解, 钛阳极, 钛酸乙酯, 水解, 纳米TiO2, 拉曼光谱

Abstract: 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.

Key words: Dissolution, Titanium anode, Titanium ethoxide, Hydrolysis,  Nanocrystalline TiO2 Raman spectra