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Nano hollow titanium dioxide microspheres with low refractive index and high catalytic activity and preparation method thereof

A high catalytic activity, titanium dioxide technology, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of high catalytic activity, adhesion deformation, low refractive index, etc., achieve high catalytic activity and improve stability sexual effect

Active Publication Date: 2021-04-27
DONGGUAN CSG SOLAR GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Nano hollow titanium dioxide microspheres with low refractive index and high catalytic activity and preparation method thereof
  • Nano hollow titanium dioxide microspheres with low refractive index and high catalytic activity and preparation method thereof
  • Nano hollow titanium dioxide microspheres with low refractive index and high catalytic activity and preparation method thereof

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Embodiment 1

[0039] A kind of nano-titanium dioxide hollow microsphere with low refractive index and high catalytic activity of the present embodiment is prepared by the following steps (the following components are all by mass percentage):

[0040] Step a, add 73.4% water to the reaction vessel, start stirring and heating, when the temperature rises to 85°C, add 2% ammonium persulfate initiator solution, after the temperature stabilizes, start to add 18% styrene, 0.6% of divinylbenzene, 2% of cationic monomer acryloyloxyethyltrimethoxyammonium chloride and 4% of zwitterionic reactive emulsifier SM-JR-1 were added within 6 hours and kept for reaction 10h; After the heat preservation is completed, cool down to 30°C, add additive ammonia water to neutralize, adjust the pH value to 8, and then filter to obtain a cationic polystyrene emulsion;

[0041] Step b, mix 5% cationic polystyrene emulsion and 81% solvent methanol evenly, and mix 12% titanium source isopropyl titanate and 2% chelating a...

Embodiment 2

[0045] A kind of nano-titanium dioxide hollow microsphere with low refractive index and high catalytic activity of the present embodiment is prepared by the following steps (the following components are all by mass percentage):

[0046] Step a, add 64% water to the reaction vessel, start stirring and heating, when the temperature rises to 135°C, add the initiator solution of 2% potassium persulfate and 3% sodium persulfate, after the temperature stabilizes, start adding 20% styrene, 1% divinylbenzene, cationic monomers 4% methacryloxyethyltrimethylammonium chloride and 1% acrylamidopropyltrimethylammonium chloride, and 5% The zwitterionic reactive emulsifier SM-JR-1 was added within 4 hours, and kept for 6 hours; after the heat preservation was completed, the temperature was lowered to 33°C, and the auxiliary agent diethanolamine was added to neutralize, and the pH value was adjusted to 7, and then filtered Obtain cationic polystyrene emulsion;

[0047] Step b, mix 2% cationi...

Embodiment 3

[0050] A kind of nano-titanium dioxide hollow microsphere with low refractive index and high catalytic activity of the present embodiment is prepared by the following steps (the following components are all 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, after the temperature stabilizes, start adding 10% benzene Ethylene, 0.1% divinylbenzene, cationic monomer 0.5% benzylvinyltrimethylammonium chloride and 0.5% methacryloyloxyethyldimethylbenzylammonium chloride, and 1% amphoteric The ion-reactive emulsifier SM-JR-1 was added within 8 hours, and kept for 13 hours. After the heat preservation was completed, 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% cat...

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Abstract

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. ‑JR‑1 prepares a cationic polystyrene emulsion; then dilutes the cationic polystyrene emulsion with a solvent and adds a titanium source and a chelating agent for a hydrolysis reaction, and coats titanium dioxide on the surface of the cationic polystyrene microspheres, thereby producing Nano-core-shell titanium dioxide microspheres with controllable particle size and shell thickness are obtained, and then nano-hollow titanium dioxide microspheres are further prepared. The invention directly obtains nano-core-shell titanium dioxide microspheres with controllable particle size and shell thickness through a one-step method, greatly simplifies the preparation steps, and solves the problem that polystyrene microspheres are prone to adhesion deformation during the drying process, which affects the nano-core-shell Technical issues in the morphology of titanium dioxide microspheres.

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 High oxidation activity, good chemical stability, non-toxic to human body, low cost, no pollution, wide application range, is currently the most widely used nano-photocatalytic material, and is also the most promising green catalyst. Nano-TiO2 has shown attractive application prospects in many fields such as national defense, agriculture, industry, medicine, medical treatment, sanitation, petroleum, chemical industry, textile, environment, and construction industry. Due to TiO 2 It has strong photocatalytic oxidation ability and superhydrophilicity. People coat a layer of nano-TiO on the surface of ordinary glass 2 film, the glass surface has a self-cleaning function. Self-cleaning glass was fi...

Claims

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Application Information

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Patent Type & Authority Patents(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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