Preparation method of bar-shaped NiTiO3 nano-crystalline

[0013] Embodiment 1: Add analytically pure nickel nitrate hexahydrate in dehydrated alcohol, and constantly stir, be mixed with Ni 2+ The transparent solution with a concentration of 0.5mol / L is denoted as A; analytically pure tetrabutyl titanate is added to the A solution, so that Ni 2+ with Ti 4+ The molar ratio of oxalic acid to all cations is 0.5:1, and the mixed solution is obtained by stirring continuously, and then oxalic acid is added to the mixed solution, so that the molar ratio of oxalic acid to all cations is 0.5:1, and finally water with 4 times the volume of absolute ethanol is added, and stirred After uniformity, the solution formed after standing still is recorded as B; after the above solution B is irradiated in a UV-microwave instrument for 25 hours, the solution has precipitation, filter the precipitation and wash it with acetone, put it in a drying oven, and dry it at 80°C for 12 hours. That is to get the final product - rod-shaped NiTiO without impurities

[0015] Embodiment 2: Add analytically pure nickel nitrate hexahydrate in dehydrated alcohol, and constantly stir, be mixed with Ni 2+ The transparent solution with a concentration of 0.6mol / L is denoted as A; analytically pure tetrabutyl titanate is added to the A solution, so that Ni 2+ with Ti 4+ The molar ratio of oxalic acid and all cations is 1:1, and the mixed solution is obtained by stirring continuously, then add oxalic acid to the mixed solution, so that the molar ratio of oxalic acid and all cations is 1:1, and finally add water 4 times the volume of absolute ethanol, stir After uniformity, the solution formed by standing still is recorded as B; after the above solution B is irradiated in a UV-microwave instrument for 12 hours, the solution has precipitates, filter the precipitates and wash them with acetone, put them in a drying oven, and dry them at 100°C for 10 hours. That is to get the final product - rod-shaped NiTiO without impurities 3 Nanocrystalline.

[0016] Embodiment 3: Add analytically pure nickel nitrate hexahydrate in dehydrated alcohol, and constantly stir, be mixed with Ni 2+ The transparent solution with a concentration of 0.8mol / L is denoted as A; analytically pure tetrabutyl titanate is added to the A solution, so that Ni 2+ with Ti 4+ The molar ratio of oxalic acid and all cations is 1:1, and the mixed solution is obtained by stirring constantly, then add oxalic acid to the mixed solution, so that the molar ratio of oxalic acid and all cations is 1.5:1, and finally add water 6 times the volume of absolute ethanol, stir After uniformity, the solution formed after standing still is recorded as B; after the above solution B is irradiated in a UV-microwave instrument for 36 hours, the solution has precipitates, filter the precipitates and wash them with acetone, put them in a drying oven, and dry them at 90°C for 11 hours. That is to get the final product - rod-shaped NiTiO without impurities 3 Nanocrystalline.