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Method of homogeneous titanium dioxide-tin dioxide composite material

A technology of tin dioxide and titanium dioxide, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, water treatment of special compounds, etc., can solve the problems that cannot be designed, can not really achieve synergy, and achieve Performance optimization, avoiding phase separation problems, and the effect of high specific surface area

Active Publication Date: 2019-02-15
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN 201310072941.1 discloses a special structure TiO 2 -SnO 2 The preparation method of nanocomposite materials, the patent uses a hydrothermal method to prepare special structure TiO 2 -SnO 2 Nanocomposite materials, although the performance of the composite materials prepared by these methods has been improved to a certain extent, the material structure cannot be designed at the molecular level, and the synergistic effect of the two materials cannot be truly achieved.

Method used

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  • Method of homogeneous titanium dioxide-tin dioxide composite material
  • Method of homogeneous titanium dioxide-tin dioxide composite material
  • Method of homogeneous titanium dioxide-tin dioxide composite material

Examples

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Effect test

Embodiment 1

[0032] In 60 mL of ethanol solution, add 1.13 g of stannous chloride dihydrate and 1.65 g of p-carboxybenzylmethoxim powder. The reaction temperature of reflux heating is controlled at 90-100°C, and the reaction time is 6 hours. After the reaction is completed, rotary evaporation is carried out. The rotary evaporation temperature is 50-70°C. The powder obtained after rotary evaporation is placed in a vacuum drying oven. The drying time is After 6 hours, tin dioxide-p-carboxybenzyl oxime powder was obtained. In the state that the double row tube system is filled with inert gas, add 25mL of ethanol solvent, 0.35mL of tetrabutyl titanate and 0.447g of tin dioxide-p-carboxybenzoxime powder. Magnetic stirring reaction for 2-3 hours, after the reaction is completed, the above mixed solution is uniformly dripped on the glass plate, and the solution is hydrolyzed into powder, which can be scraped off with a blade to obtain SnO 2 :TiO 2 =1:1 single-source precursor xerogel powder, an...

Embodiment 2

[0034]In 40 mL of ethanol solution, add 1.13 g of stannous chloride dihydrate and 1.65 g of p-carboxybenzylmethoxim powder. The reaction temperature of reflux heating is controlled at 90-100°C, and the reaction time is 6 hours. After the reaction is completed, rotary evaporation is carried out. The rotary evaporation temperature is 50-70°C. The powder obtained after rotary evaporation is placed in a vacuum drying oven. The drying time is After 6 hours, tin dioxide-p-carboxybenzyl oxime powder was obtained. In the state that the double row tube system is filled with inert gas, add 50mL of ethanol solvent, 1.38mL of tetrabutyl titanate and 0.8984g of tin dioxide-p-carboxybenzoximine powder. Magnetic stirring reaction for 2-3 hours, after the reaction is completed, the above mixed solution is uniformly dripped on the glass plate, and the solution is hydrolyzed into powder, which can be scraped off with a blade to obtain SnO 2 :TiO 2 =1:2 single-source precursor xerogel powder, ...

Embodiment 3

[0036] In 40 mL of ethanol solution, add 1.13 g of stannous chloride dihydrate and 1.65 g of p-carboxybenzylmethoxim powder. The reaction temperature of reflux heating is controlled at 90-100°C, and the reaction time is 6 hours. After the reaction is completed, rotary evaporation is carried out. The rotary evaporation temperature is 50-70°C. The powder obtained after rotary evaporation is placed in a vacuum drying oven. The drying time is After 6 hours, tin dioxide-p-carboxybenzyl oxime powder was obtained. In the state that the double row tube system is filled with inert gas, add 50mL of ethanol solvent, 1.38mL of tetrabutyl titanate and 0.8984g of tin dioxide-p-carboxybenzoximine powder. Magnetic stirring reaction for 2-3 hours, after the reaction is completed, the above mixed solution is uniformly dripped on the glass plate, and the solution is hydrolyzed into powder, which can be scraped off with a blade to obtain SnO 2 :TiO 2 =1:2 single-source precursor xerogel powder,...

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Abstract

The invention relates to a method of homogeneous titanium dioxide-tin dioxide composite material. The method comprises the following steps: firstly, dissolving a tin source and a bifunctional compoundinto a solvent and carrying out reflux heating reaction; after the reaction is ended, sequentially carrying out rotary evaporation and vacuum drying to obtain tin dioxide-bifunctional compound powder; secondly, in an inert environment, dissolving a titanium source and the tin dioxide-bifunctional compound powder into the solvent and carrying out stirring reaction to obtain a mixed solution; thirdly, dispensing the mixed solution on a glass plate, scraping the powder with a blade after the mixed solution becomes powdery, grinding to obtain titanium dioxide-tin dioxide single source precursor xerogel powder and calcining to obtain the homogeneous titanium dioxide-tin dioxide composite material. Compared with the prior art, the method disclosed by the invention has the advantages that a single-source precursor system is adopted to prepare the composite material, the material structure can be redesigned from the molecular level, the phase separation problem of mixed materials is solved and the synergy between titanium dioxide and tin dioxide is improved.

Description

technical field [0001] The invention relates to the field of preparation of titanium dioxide-tin dioxide composite materials, in particular to a method for preparing titanium dioxide-tin dioxide composite materials with uniform components and high specific surface area by using a single-source precursor. Background technique [0002] Tin dioxide (SnO 2 ) is an n-type wide-gap semiconductor with a band gap of 3.5-4.0eV and a visible light and infrared transmittance of 80%. It is an important semiconductor sensor material. Due to its good permeability to visible light, it has Excellent chemical stability with specific electrical conductivity and infrared radiation reflection properties. Titanium dioxide (TiO 2 ) belongs to an n-type semiconductor compound, which has three crystal forms of rutile, anatase and brookite, and has a strong oxidation ability and is an efficient photocatalyst. The bandgap width is 3.2ev (anatase), and it can photocatalytically degrade pollutants u...

Claims

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Application Information

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IPC IPC(8): B01J23/14C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J23/002B01J23/14C02F2305/10C02F2101/308C02F2101/38C02F2101/40C02F2101/34B01J35/39
Inventor 杨靖霞张京金邹冰杰丁惠会
Owner SHANGHAI UNIV OF ENG SCI
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