| 有机溶液中电化学制备纳米MgTiO3 |
| Preparation of Nano-sized MgTiO3 Powder by Electrochemistry in Organic Solution |
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| 摘要: |
| 关键词: 电化学 电合成 溶胶-凝胶 纳米MgTiO3 |
| 基金项目: |
| Abstract: In a cell without separating the cathode and anode spaces, the precursor MgTi(OCH2CH3)(6-y)(acac)y of the mixed oxide MgTiO3 was directly synthesized by electrochemical dissolution of titanium for 4 hours and then of magnesium for 1 hour 40 minutes at the current of 0.2 A in ethanol and acetyl-acetone solution. The nano- MgTiO3 powder was prepared by a direct sol-gel process of the electrolyte solution under pH≈8.5 followed by washing, drying in vacuum for 24 h, and calcination at 500 ℃ for 2 h. IR and Raman spectroscopy, XRD, and TEM were used to investigate the structure of nano-MgTiO3 and its precursor. The result suggested that it was more appropriate to control the temperature between 35～40 ℃ and the concentration of conductive additive (Bu4N)Br at 0.04 mol·L-1. The xerogel with an average particle size of 12 nm and the nano-MgTiO3 of 20 nm was thus obtained in a high purity. |
| Keywords: electrochemistry electro-synthesis sol-gel nano-MgTiO3 |
| 投稿时间：2004-11-08 修订日期：2005-01-05 |
| 摘要点击次数: 1273 |
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| 朱传高,陈永红,褚道葆.有机溶液中电化学制备纳米MgTiO3[J].无机化学学报,2005,21(6):919-924. |
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