Titanium dioxide hollow nanosphere and preparation method thereof
A hollow nano, titanium dioxide technology, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of increasing time and labor costs, existing dangers, hidden dangers of environmental pollution, etc., to improve utilization rate, size Uniform, highly reproducible results
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[0037] Correspondingly, the present invention also provides a preparation method of titanium dioxide hollow nanospheres, comprising the following steps:
[0038] a) mixing cyclohexane, nonionic surfactant, co-surfactant, deionized water and ammonia water, and stirring to obtain a first mixed solution;
[0039] b) Mix ethyl orthosilicate, N-aminoethyl-γ-aminopropyltrimethoxysilane and cyclohexane, then add them into the first mixed solution, and obtain a second mixed solution after stirring;
[0040] c) Add ethanol to the second mixed solution, and disperse into isopropanol after centrifugal cleaning to form O-SiO 2 Isopropanol solution of nanospheres, O means organic hybridization;
[0041] d) The O-SiO 2The isopropanol solution of nanoparticles is dispersed in a mixed solution containing isopropanol, deionized water and ammonia water to form a dispersion;
[0042] e) Inject the isopropanol solution of diisopropyl di(acetylacetonate) titanate into the dispersion, stir, cent...
Embodiment 1
[0056] a. In a 50ml glass bottle, mix cyclohexane, Tritox X-100, n-hexanol, deionized water and ammonia water evenly, with a volume ratio of 150:35:35:8:2, and stir until clear;
[0057] b. Mix 300 microliters of tetraethyl orthosilicate, 150 microliters of N-aminoethyl-γ-aminopropyltrimethoxysilane and 1 milliliter of cyclohexane evenly, then add it to the mixed solution in the previous step at one time, and stir 24 hours;
[0058] c. Add an equal volume of ethanol to the mixed solution formed in the previous step to demulsify, then centrifuge and wash, and then disperse it in 16 ml of isopropanol to form organic hybrid silica nanospheres (O-SiO 2 Nanospheres) in isopropanol solution, "O" means organic hybridization;
[0059] d. In a 50 ml glass bottle, mix isopropanol, deionized water and ammonia water to form a mixed solution, and 1 ml of O-SiO with a concentration of 0.1 mol / L 2 The nanosphere isopropanol solution is added to the aforementioned mixed solution to form ...
Embodiment 2
[0063] a. In a 50ml glass bottle, mix cyclohexane, Tritox X-100, n-hexanol, deionized water and ammonia water evenly, with a volume ratio of 150:35:35:8:2, and stir until clear;
[0064] b. Mix 300 microliters of tetraethyl orthosilicate, 150 microliters of N-aminoethyl-γ-aminopropyltrimethoxysilane and 1 milliliter of cyclohexane evenly, then add it to the mixed solution in the previous step at one time, and stir 24 hours;
[0065] c. Add an equal volume of ethanol to the mixed solution formed in the previous step to demulsify, then centrifuge and wash, and then disperse it in 16 ml of isopropanol to form organic hybrid silica nanospheres (O-SiO 2 Nanospheres) in isopropanol solution, "O" means organic hybridization;
[0066] d. In a 50 ml glass bottle, mix isopropanol, deionized water and ammonia water to form a mixed solution, and 1 ml of O-SiO with a concentration of 0.1 mol / L 2 The nanosphere isopropanol solution is added to the aforementioned mixed solution to form ...
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