Room-temperature phosphorescent material as well as preparation method and application thereof
A room temperature phosphorescence and hydrothermal reaction technology, applied in the field of room temperature phosphorescence materials and their preparation, can solve the problems of poor water dispersibility, biological toxicity and high cost
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[0043] A method for preparing a room temperature phosphorescent material, comprising the steps of:
[0044] S1. Dispersing the organosilane and the reducing agent in water to obtain a dispersion;
[0045] S2. Dispersing the zinc source in the dispersion liquid to obtain a reaction precursor solution;
[0046] S3, subjecting the reaction precursor solution to a hydrothermal reaction;
[0047] S4. Separating the solid product of the hydrothermal reaction to obtain a room temperature phosphorescent material.
[0048] Among them, the organosilane is the precursor of the silicon oxide framework, and the purpose of the zinc source is to provide zinc ions. Preferably, the organosilane is selected from (3-aminopropyl) trimethoxysilane or (3-aminopropyl) triethoxysilane; the reducing agent is selected from trisodium citrate or citric acid; the The zinc source is selected from one or more of zinc nitrate, zinc chloride, or zinc sulfate.
[0049] In step S1, preferably, the step of d...
Embodiment 1
[0067] Mix and disperse 4g (3-aminopropyl)trimethoxysilane and 0.3g trisodium citrate in 30mL deionized water, keep stirring for more than 15min, and pass through nitrogen protection to obtain a dispersion. 0.00025 mol of zinc nitrate was added to the dispersion and stirred overnight to obtain a reaction precursor solution. The reaction precursor solution was transferred to a reaction kettle, and put into an oven for hydrothermal reaction; the reaction conditions were heating time of 10 hours and heating temperature of 220°C. After the reaction is completed, cool to room temperature and perform centrifugation washing at 8000 rpm for 5 minutes each time, repeating 4 times, and the obtained lower layer precipitate is the room temperature phosphorescent material.
Embodiment 2
[0069] Mix and disperse 4g (3-aminopropyl)trimethoxysilane and 0.3g trisodium citrate in 30mL deionized water, keep stirring for more than 15min, and pass through nitrogen protection to obtain a dispersion. 0.0005 mol of zinc nitrate was added to the dispersion and stirred overnight to obtain a reaction precursor solution. The reaction precursor solution was transferred to a reaction kettle, and put into an oven for hydrothermal reaction; the reaction conditions were heating time of 10 hours and heating temperature of 220°C. After the reaction is completed, cool to room temperature and perform centrifugation washing at 8000 rpm for 5 minutes each time, repeating 4 times, and the obtained lower layer precipitate is the room temperature phosphorescent material.
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