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以V_2O_5,C_2H_5OH和SOCl_2为原料,用氨法合成了釩的醇盐Vo(OC_2H_5)_3。将玻璃在其乙醇溶液中浸涂、热处理后,得到表面无定形V_2O_5导电膜。浸涂液中乙醇和钒醇盐体积比为14,水和钒醇盐摩尔比为2或3时,导电膜均匀、透明,并具良好的导电性。随着热处理温度的升高及热处理时间的延长,涂膜的厚度减少,膜与基体玻璃的结合增强,膜的电导率逐渐上升,在320℃时达到最大值,为3.5×10~(-2)Ω~(-1)。cm~(-1)。透射电镜分析表明,VO(OC_2H_5)_3水解后得到的凝胶具有纤维状显微结构。凝胶的傅里叶转换红外吸收光谱显示V_2O_5的特征吸收峰。差热和X射线衍射分析表明,在340℃凝胶中V_3O_5晶化。
The vanadium alkoxide Vo (OC_2H_5) _3 was synthesized by ammonia method using V_2O_5, C_2H_5OH and SOCl_2 as raw materials. The glass in its ethanol solution dip coating, heat treatment, the surface amorphous V_2O_5 conductive film. Dip coating solution of ethanol and vanadium alkoxide volume ratio of 14, water and vanadium alkoxide molar ratio of 2 or 3, the conductive film uniform, transparent, and with good electrical conductivity. With the increase of heat treatment temperature and the prolongation of heat treatment time, the thickness of the coating decreased, the combination of the film and the base glass increased, and the conductivity of the film increased gradually and reached the maximum at 320 ℃, which was 3.5 × 10 -2 ) Ω ~ (-1). cm ~ (-1). Transmission electron microscopy analysis showed that the gel obtained after the hydrolysis of VO (OC 2 H 5) 3 has a fibrous microstructure. The Fourier transform infrared absorption spectrum of the gel shows the characteristic absorption peak of V 2 O 5. Differential thermal analysis and X-ray diffraction analysis showed that V_3O_5 crystallized in the gel at 340 ℃.