A silicon dioxide-coated metal-doped tin oxide material and its preparation method, dispersion and its preparation method
A silicon dioxide and metal doping technology, applied in chemical instruments and methods, microsphere preparation, mixing methods, etc., can solve the problems of poor optical properties of particles, and achieve continuous and complete shell layer, strong infrared blocking rate and dispersibility. , the effect of good stability
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Embodiment 1
[0060] A method for preparing silicon dioxide coated doped tin oxide transparent nano-dispersion material, comprising the steps of:
[0061] 1) Weigh 35.06g SnCl 4 ·5H 2 O, 1.85g MgCl 2 ·5H 2 O and 2.16 g MnCl 2 4H 2 O, be dissolved in 100mL, the hydrochloric acid that mass fraction is 3.6wt%, obtain mixed metal salt solution; Dropwise in the described mixed metal salt solution, the ammonia solution of 3mol / L is added dropwise to the pH value of system to be 10, temperature control At about 5°C, a hydroxide precipitate is obtained, and the precipitate is washed several times with distilled water and ethanol until no chloride ions are detected;
[0062] 2) Disperse the generated hydroxide in 150ml of ethanol, add 25ml of deionized water, adjust the pH to 7 with ammonia water, control the temperature at 20°C, and slowly add 0.140g of tetraethyl orthosilicate to react for 4h under stirring conditions, A silica-coated hydroxide precipitate is obtained;
[0063] 3) Refluxing...
Embodiment 2
[0068] A method for preparing a silicon dioxide-coated doped tin oxide material, comprising the steps of:
[0069] 1) Weigh 24.87g Sn(NO 3 ) 2 · and 2.28g Sb(NO 3 ) 3 Dissolve in 100mL of nitric acid with a mass fraction of 3.5wt% to obtain a mixed metal salt solution; add 3mol / L ammonia solution dropwise to the mixed metal salt solution until the pH of the system is 10, and the temperature is controlled at about 5°C , to obtain a hydroxide precipitate, the precipitate was washed several times with distilled water and ethanol until no chloride ions were detected;
[0070] 2) Disperse the generated hydroxide in 120ml of ethanol, add 15ml of deionized water, adjust the pH at 8 with ammonia water, control the temperature at 25°C, and slowly add 0.093g of tetraethyl orthosilicate to react for 4h under stirring conditions, A silica-coated hydroxide precipitate is obtained;
[0071] 3) Refluxing the silica-coated hydroxide precipitate at 98° C. for 3 hours to obtain a precursor...
Embodiment 3
[0077] A method for preparing an oil-phase dispersion containing silicon dioxide-coated doped tin oxide, comprising the steps of:
[0078] 1) Weigh 21.47g SnSO 4 and 1.61 g ZnSO 4 , be dissolved in the sulfuric acid that 100mL mass fraction is 3.5wt%, obtain mixed metal salt solution; Dropwise in described mixed metal salt solution, dropwise add 3mol / L sodium hydroxide solution to the pH value of system to be 8, temperature is controlled at At about 5°C, a hydroxide precipitate was obtained, and the precipitate was washed several times with distilled water and ethanol until no chloride ions were detected;
[0079] 2) Disperse the generated hydroxide in 100ml of ethanol, add 10ml of deionized water, adjust the pH at 7.5 with ammonia water, control the temperature at 25°C, and slowly add 0.084g of methyl orthosilicate to react for 6h under stirring conditions, A silica-coated hydroxide precipitate is obtained;
[0080] 3) Refluxing the silica-coated hydroxide precipitate at 9...
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