Nano-fiber material made of magnesium orthotitanate of spinel structure and preparation method
A technology of spinel structure and magnesium orthotitanate, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of single structure, complex process, high cost, etc., and simplify the production process , wide application space, simple cost effect
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Embodiment 1
[0027] (1) First prepare 0.1M tetrabutyl titanate solution and keep stirring for 2 h;
[0028] (2) Through the surface sol-gel method, 20 tetrabutyl titanate deposition-hydrolysis cycles were performed on the surface of the filter paper fiber to obtain a titanium oxide / filter paper composite material;
[0029] (3) The obtained titanium oxide / filter paper composite was washed several times with deionized water, and placed in a 60°C vacuum oven overnight; the dried sample was raised to 500°C at a heating rate of 2°C / min, and roasted for 6 h removes the template to obtain a titania nanotube material;
[0030] (4) At room temperature, the TiO 2 The nanotube material and metal Mg powder were put into a self-made stainless steel reactor according to the molar ratio of 1:2.5, and the reactor was closed after a certain period of nitrogen gas, and the whole system was heated to 1100 ° C for 5 h, and then lowered to room temperature;
[0031] (5) The reduction product was soaked in di...
Embodiment 2
[0033] Increase the number of deposition-hydrolysis cycles of tetrabutyl titanate on the filter paper fiber surface in step (2) in Example 1 to 40, and the rest of the conditions are the same as in Example 1, and the microstructure is also orthotitanic acid with a spinel structure A nanofibrous material formed of magnesium single crystal particles arranged longitudinally, wherein the average particle size of magnesium titanate single crystal particles is larger than that in Example 1, indicating that the number of cycles of the surface sol-gel process can be effectively controlled by controlling the number of cycles of the surface sol-gel process. particle size.
Embodiment 3
[0035] Reactant TiO in step (4) in embodiment 1 2 The ratio of the nanotube material to the metal Mg powder was increased to 1:4, and the rest of the conditions were the same as in Example 1. The microstructure of the product was obtained as a nanofibrous material formed by vertical arrangement of magnesium orthotitanate single crystal particles with a spinel structure.
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