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Nanometer hollow titanium dioxide microsphere with low reflection index and high catalysis activity and preparation method thereof

A technology with high catalytic activity and low refractive index, applied in the field of nanometer hollow titanium dioxide microspheres and their preparation, can solve the problems affecting the morphology, adhesion deformation, low refractive index and the like of nanometer core-shell titanium dioxide microspheres

Active Publication Date: 2019-03-12
DONGGUAN CSG SOLAR GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a nano-hollow titanium dioxide microsphere with low refractive index and high catalytic activity and a preparation method thereof in view of the deficiencies in the prior art. The method directly obtains the particle size and shell thickness in one step. Controllable nano-core-shell titanium dioxide microspheres greatly simplifies the preparation steps, and solves the technical problem that polystyrene microspheres are prone to adhesion deformation during the drying process, which affects the morphology of nano-core-shell titanium dioxide microspheres

Method used

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  • Nanometer hollow titanium dioxide microsphere with low reflection index and high catalysis activity and preparation method thereof
  • Nanometer hollow titanium dioxide microsphere with low reflection index and high catalysis activity and preparation method thereof
  • Nanometer hollow titanium dioxide microsphere with low reflection index and high catalysis activity and preparation method thereof

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Embodiment 1

[0039] The nano-titania hollow microspheres with low refractive index and high catalytic activity of this embodiment are prepared by the following steps (the following components are all calculated by mass percentage):

[0040] Step a. Add 73.4% water into the reaction vessel, turn on stirring and heating, when the temperature rises to 85°C, add 2% ammonium persulfate initiator solution, after the temperature stabilizes, start adding 18% styrene, 0.6% of divinylbenzene, 2% of cationic monomer acryloxyethyl trimethoxyammonium chloride and 4% of zwitterionic reactive emulsifier SM-JR-1, added within 6h to complete the reaction, and heat preservation 10h; After the heat preservation is completed, the temperature is reduced to 30°C, the auxiliary ammonia water is added to neutralize, the pH value is adjusted to 8, and then the cationic polystyrene emulsion is obtained after filtration;

[0041] Step b. Mix 5% cationic polystyrene emulsion and 81% solvent methanol uniformly, and mix 12%...

Embodiment 2

[0045] The nano-titania hollow microspheres with low refractive index and high catalytic activity of this embodiment are prepared by the following steps (the following components are all calculated by mass percentage):

[0046] Step a. Add 64% water to the reaction vessel, turn on the stirring and heating, when the temperature rises to 135°C, add 2% potassium persulfate and 3% sodium persulfate initiator solution, and when the temperature stabilizes, start adding 20% styrene, 1% divinylbenzene, cationic monomer 4% methacryloxyethyl trimethyl ammonium chloride and 1% acrylamidopropyl trimethyl ammonium chloride, and 5% The zwitterionic reactive emulsifier SM-JR-1 was added within 4h, and the reaction was incubated for 6h; after the incubation, the temperature was lowered to 33°C, the auxiliary diethanolamine was added to neutralize, the pH was adjusted to 7, and then filtered. To obtain a cationic polystyrene emulsion;

[0047] Step b. Mix 2% cationic polystyrene emulsion and 87% s...

Embodiment 3

[0050] The nano-titania hollow microspheres with low refractive index and high catalytic activity of this embodiment are prepared by the following steps (the following components are all calculated by mass percentage):

[0051] Step a. Add 87.4% water to the reaction vessel, start stirring and heating, when the temperature rises to 60°C, add 0.5% benzoyl peroxide initiator solution, and when the temperature stabilizes, start adding 10% benzene Ethylene, 0.1% divinylbenzene, cationic monomer 0.5% benzyl vinyl trimethyl ammonium chloride and 0.5% methacryloxyethyl dimethyl benzyl ammonium chloride, and 1% amphoteric The ion-reactive emulsifier SM-JR-1 was added within 8 hours and the reaction was kept for 13 hours; after the incubation, the temperature was lowered to 37°C, and the additives triethanolamine and triethylamine were added for neutralization, and the pH value was adjusted to 4. Then filter to obtain cationic polystyrene emulsion;

[0052] Step b. Mix 10% cationic polysty...

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Abstract

The invention relates to the technical field of nanometer core-shell materials, in particular to a nanometer hollow titanium dioxide microsphere with low reflection index and high catalysis activity and a preparation method thereof. The preparation method comprises the following steps of leading special functional monomer-zwitter ion reactive emulsifier SM-JR-1, so as to prepare a cationic polystyrene emulsion; then, diluting the cationic polystyrene emulsion by a solvent, adding a titanium source and a chelating agent to generate hydrolysis reaction, and coating titanium dioxide to the surface of the cationic polystyrene microsphere, so as to obtain the nanometer core-shell titanium dioxide microsphere with controllable particle size and shell thickness; furthermore, preparing the nanometer hollow titanium dioxide microsphere. The preparation method has the advantages that the nanometer core-shell titanium dioxide microsphere with controllable particle size and shell thickness can bedirectly obtained by a one-step method, so that the preparation steps are greatly simplified; the technical problem of influence on the shape of the nanometer core-shell titanium dioxide microsphere due to easiness in sticking and deformation of the polystyrene microsphere in the drying process is solved.

Description

Technical field [0001] The invention relates to the technical field of nano core-shell materials, in particular to a nano hollow titanium dioxide microsphere with low refractive index and high catalytic activity and a preparation method thereof. Background technique [0002] TiO 2 It has high oxidation activity, good chemical stability, non-toxic to human body, low cost, no pollution, and wide application range. It is currently the most widely used nano-photocatalytic material and the most promising green catalyst. Nano-TiO2 has shown attractive application prospects in many fields such as national defense, agriculture, industry, medicine, medical treatment, health, petroleum, chemical industry, textile, environment, construction industry and so on. Due to TiO 2 It has strong photocatalytic oxidation ability and super hydrophilicity. People coat a layer of nano TiO on the surface of ordinary glass 2 Film, the glass surface has a self-cleaning function. The earliest development o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y40/00
CPCB82Y40/00C01G23/053C01G23/0532C01G23/0536C01P2004/04C01P2004/34
Inventor 周志文陈刚王科刘明刚陈海峰陈诚唐高山胡小娅纪朋远贺志奇
Owner DONGGUAN CSG SOLAR GLASS
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