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 nanoMgTiO3 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.
展开▼
