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Preparation method and application of water-soluble titanium dioxide nanoparticles

A technology of titanium dioxide and nanoparticles, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, 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: 2018-04-24
河南科斗新材料研究院有限公司
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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 a large extent on the size and dispersibility of the particles. Therefore, it is necessary to find a uniform particle size and good dispersibility. The facile preparation of titania nanoparticles is critical

Method used

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  • Preparation method and application of water-soluble titanium dioxide nanoparticles
  • Preparation method and application of water-soluble titanium dioxide nanoparticles
  • Preparation method and application of water-soluble titanium dioxide nanoparticles

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Embodiment 1

[0046] A preparation method of water-soluble titanium dioxide nanoparticles, comprising the following steps:

[0047] (1) Synthesis of star macromolecular initiator 21Br-β-CD:

[0048] 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 w...

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Abstract

The invention discloses a preparation method and application of water-soluble titanium dioxide nanoparticles. According to the preparation method, beta-cyclodextrin is used as an initial reaction material, a macroinitiator is synthesized by means of modification, a multi-arm star-shaped block copolymer is prepared by using an atom transfer radical polymerization (ATRP) technology and a technologywhich combines ATRP with 'click' chemistry, and the water-soluble titanium dioxide nanoparticles with uniform sizes and good dispersibility are prepared by taking the multi-arm star-shaped block copolymer as a monomolecular micelle template on the basis of a solution phase synthesis method. The titanium dioxide nanoparticles prepared by the preparation method are stable in quality, uniform in particle sizes, and can be stabilized at a nanoscale; the properties of the titanium dioxide nanoparticles can be effectively enabled to be exerted. The surfaces of the titanium dioxide nanoparticles aremodified, so that the titanium dioxide nanoparticles can be enabled to be evenly dispersed in water, and an aggregation effect is further avoided.

Description

technical field [0001] The invention relates to a preparation method and application of water-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...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y30/00B01D53/86B01D53/72C02F1/30B01J21/06C08G81/02
CPCB01D53/8668B82Y30/00C01G23/053C02F1/30C08G81/025B01J21/063B01D2255/20707B01D2255/802C01P2004/04C01P2004/64C02F2101/308C02F2305/10B01J35/39
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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