Nickel doped titanium based inverse opal structure material and preparation method thereof
An inverse opal structure, titanium-based technology, applied in the directions of luminescent materials, inorganic material magnetism, chemical instruments and methods, etc., can solve the problems of difficulty in controlling the concentration of the precursor solution, affecting the effect of doping, etc., and achieves good application prospects, easy to use. Industrialized and controllable effects
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[0031]2) Preparation of polystyrene colloidal crystal template
[0032] The polystyrene colloidal crystal template was prepared by vertical pulling method. Before preparation, the substrate needs to be soaked overnight in a solution containing 30% hydrogen peroxide and 70% concentrated sulfuric acid by volume, and the soaked substrate is rinsed with deionized water and dried with nitrogen gas to improve the hydrophilicity of its surface. Then immerse the treated substrate vertically into the liquid storage tank, let it stand for 15 minutes, slowly pull it out of the liquid surface with a film pulling machine, and then dry it for 15 minutes, repeating this 2-6 times. Then, the substrate is dried at 70-90° C. to strengthen the cross-linking between the microspheres. The polystyrene colloidal crystal template can be obtained, see figure 1 .
Embodiment 1
[0034] Firstly, polystyrene colloidal crystal templates were prepared by emulsion polymerization and vertical pulling method. Then the precursor solution was prepared, 5 mL of titanium ammonium lactate was added dropwise to 100 mL of secondary deionized water, and vigorously stirred with a magnetic stirrer to form a colorless and transparent solution. Finally, 0.23 g of nickel nitrate was added to obtain a yellow-green transparent solution after dissolving, which was sealed with a plastic wrap and stored away from light for future use. Finally, the substrate with the polystyrene colloidal crystal template was immersed in the precursor solution, slowly lifted vertically after soaking for 4 hours, and dried in the air overnight. After natural drying, the samples were put into a muffle furnace for calcination. The calcination process was a temperature program: first, the temperature was rapidly raised from room temperature to 285 °C, and the heating rate was 10 °C / min. Then slow...
Embodiment 2
[0037] Firstly, polystyrene colloidal crystal templates were prepared by emulsion polymerization and vertical pulling method. Then the precursor solution was prepared, 10 mL of titanium ammonium lactate was added dropwise to 100 mL of secondary deionized water, and vigorously stirred with a magnetic stirrer to form a colorless and transparent solution. Finally, 0.23 g of nickel nitrate was added to obtain a yellow-green transparent solution after dissolving, which was sealed with a plastic wrap and stored away from light for future use. Finally, the substrate with the polystyrene colloidal crystal template was immersed in the precursor solution for 4 hours, then slowly lifted vertically, and dried in the air overnight. After natural drying, the samples were put into a muffle furnace for calcination. The calcination process was a temperature program: first, the temperature was rapidly raised from room temperature to 285 °C, and the heating rate was 10 °C / min. Then slowly incre...
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