Photochromic room temperature magnetic semiconductor material and preparation method thereof
A magnetic semiconductor and photochromic technology, which is applied in the direction of color-changing fluorescent materials, luminescent materials, and the magnetism of inorganic materials, to achieve the effects of fast photochromic rate, enhanced magnetic response, and simple and easy preparation methods
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[0048] Example 1
[0049] A preparation method of photochromic room temperature magnetic semiconductor material, the steps are as follows:
[0050] (1) Preparation of precursor solution
[0051] Add 0.5g of bismuth nitrate pentahydrate to 0.8mol / L nitric acid solution, stir until bismuth nitrate pentahydrate is completely dissolved, then add 0.18g of sodium tungstate, stir for about 10 minutes, and then add 0.3g of polyethylene glycol;
[0052] (2) Hydrothermal reaction
[0053] The mixed solution obtained in step (1) was poured into a 50ml polytetrafluoroethylene reactor for hydrothermal reaction, and the reaction conditions were: temperature: 180° C., reaction time: 6 hours. The reactor was taken out and cooled to room temperature naturally.
[0054] (3) Product post-processing
[0055] The hydrothermal reaction mixed solution obtained in step (2) was centrifuged three times with deionized water, and the centrifugation speed was 8000 rmp; then, the product obtained by th...
Example Embodiment
[0058] Example 2
[0059] A preparation method of photochromic room temperature magnetic semiconductor material, the steps are as follows:
[0060] (1) Preparation of precursor solution
[0061] Add 0.5g of bismuth nitrate pentahydrate to 0.8mol / L nitric acid solution, stir until bismuth nitrate pentahydrate is completely dissolved, then add 0.18g of sodium tungstate, stir for about 10 minutes, and then add 0.3g of polyethylene glycol;
[0062] (2) Hydrothermal reaction
[0063] The mixed solution obtained in step (1) was poured into a 50ml polytetrafluoroethylene reactor for hydrothermal reaction, and the reaction conditions were: temperature: 180 ° C, reaction time: 10 hours, and the reactor was taken out and cooled to room temperature naturally.
[0064] (3) Product post-processing
[0065] The hydrothermal reaction mixed solution obtained in step (2) was centrifuged and washed three times with deionized water, and the centrifugation speed was 8000 rmp; then, the product...
Example Embodiment
[0068] Example 3
[0069] A preparation method of photochromic room temperature magnetic semiconductor material, the steps are as follows:
[0070] (1) Preparation of precursor solution
[0071] Add 0.5g of bismuth nitrate pentahydrate to 0.8mol / L nitric acid solution, stir until bismuth nitrate pentahydrate is completely dissolved, then add 0.18g of sodium tungstate, stir for about 10 minutes, and then add 0.3g of polyethylene glycol;
[0072] (2) Hydrothermal reaction
[0073] The mixed solution obtained in step (1) was poured into a 50ml polytetrafluoroethylene reactor for hydrothermal reaction, and the reaction conditions were: temperature: 180° C., reaction time: 17 hours. The reactor was taken out and cooled to room temperature naturally.
[0074] (3) Product post-processing
[0075] The hydrothermal reaction mixed solution obtained in step (2) was centrifuged and washed three times with deionized water, and the centrifugation speed was 8000 rmp; then, the product ob...
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