Preparation method of oil soluble titanium dioxide nanometer particles and application thereof

A nanoparticle and titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problems of uncontrollable size and distribution, and achieve the effect of guaranteed performance, stable quality and uniform particle size

Active Publication Date: 2018-04-20
河南科斗新材料研究院有限公司
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  • Application Information

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Problems solved by technology

Titanium dioxide nanoparticles synthesized by traditional methods usually have the disadvantages of uncontrollable size and distribution, and the properties and applications of titanium dioxide depend to...

Method used

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  • Preparation method of oil soluble titanium dioxide nanometer particles and application thereof

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Embodiment

[0034] A preparation method of oil-soluble titanium dioxide nanoparticles, comprising the following steps:

[0035] (1) Synthesis of star macromolecular initiator 21Br-β-CD:

[0036]Take 6.82g of β-cyclodextrin, dry it at 80°C for 12h under vacuum, then dissolve it in 60mL of N-methylpyrrolidone at room temperature, put it in an ice-water bath, and cool it to 0°C. Under this condition, Add 58g of 2-bromoisobutyryl bromide dropwise within 2h. After the dropwise addition, warm up to room temperature and continue to react for 24h to obtain a brown solution. Concentrate by distillation under reduced pressure, add 100mL of dichloromethane to dilute, and wash with 100mL of saturated aqueous sodium bicarbonate solution and 100 mL of deionized water were washed three times each, and the obtained organic phase was dried with anhydrous magnesium sulfate, then concentrated with a rotary evaporator, and finally precipitated in n-hexane below -20°C to obtain a white precipitate, which was ...

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Abstract

The invention discloses a preparation method of oil soluble titanium dioxide nanometer particles. According to the method, beta-cyclodextrin is taken as a primary reaction material and is synthesizedinto a macroinitiator through modification; multi-arm star block copolymer is formed through a technology of combination of ATRP and click chemistry; the oil soluble titanium dioxide nanometer particles with uniform sizes and excellent dispersity, based on a solution phase synthesis method and taking the multi-arm star block copolymer as a unimolecular micelle template, are formed. The surfaces ofthe TiO2 nanometer particles are modified, the TiO2 nanometer particles can be uniformly dispersed in an oily solvent, and the occurrence of aggregation effect can be avoided. The formed nanometer particles are stable in quality, the particle sizes are uniform and can be stabilized in nanoscale, and that performance of the TiO2 nanometer particles is realized can be effectively guaranteed.

Description

technical field [0001] The invention relates to a preparation method and application of oil-soluble titanium dioxide nanoparticles, belonging to the technical field of inorganic nanomaterial synthesis. Background technique [0002] Nanomaterials are generally called nanomaterials that have one or more dimensions in the range of 1-100 nm or are composed of them as basic units, which is roughly equivalent to the scale where 10-100 atoms are closely arranged together. Nanomaterials exhibit unique electrical, optical, magnetic, and catalytic properties due to their unique effects such as surface effects, micro-size effects, and quantum tunneling effects. [0003] As a typical N-type semiconductor, titanium dioxide has the characteristics of wide band gap, good biocompatibility, resistance to various chemical corrosion candles, and non-toxic to the human body. It also has good photorefractive power, photocatalytic performance, and photoelectric conversion rate. , Antibacterial e...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00C08F293/00C08F220/18C08F212/08C09D7/62
CPCB82Y40/00C01G23/053C01P2002/72C01P2004/64C08F212/08C08F220/18C08F220/1804C08F293/005C08F2438/01
Inventor 裴东杰吴斌刘刚于航
Owner 河南科斗新材料研究院有限公司
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