Preparation method of titanium dioxide-tin dioxide nano-sosoloid material

A tin dioxide, titanium dioxide technology, applied in the direction of titanium oxide/hydroxide, titanium dioxide, tin oxide, etc., to achieve the effect of improving photocatalytic performance and gas sensing performance, avoiding agglomeration, and simple technical principle

Inactive Publication Date: 2013-03-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects in the preparation of the current titanium dioxide-tin dioxide solid solution material, the present invention provides a method combining the sol-gel method and the hydrothermal method without further Nanoscale tin dioxide-titanium dioxide (Ti1-xSnxO2, 0.15≤ x <1) solid solution was directly prepared by high temperature sintering Material

Method used

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  • Preparation method of titanium dioxide-tin dioxide nano-sosoloid material
  • Preparation method of titanium dioxide-tin dioxide nano-sosoloid material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation process and steps in this embodiment are as follows:

[0021] 1. Weigh 7.88g (0.037mol) of citric acid (C 6 h 8 o 7 ) and 0.2727g (7.78×10 -4 mol) tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O);

[0022] 2. Measure 8mL (0.143mol) of ethylene glycol (C 2 h 6 o 2 ), put into the beaker;

[0023] 3. The weighed C 6 h 8 o 7 and SnCl 4 ·5H 2 Add O to ethylene glycol together, and stir rapidly for 10 minutes under the condition of 80°C water bath to dissolve it completely;

[0024] 4. Quickly add 1.5mL (4.41×10 -3 mol) tetrabutyl titanate (Ti(OC 4 h 9 ) 4 ), then add about 15ml of deionized water, and stir rapidly for 1 hour in a water bath at 80°C until a transparent precursor sol is formed;

[0025] 5. Put the above transparent precursor sol into a closed reaction kettle and react in an oven at 200°C for 10 hours;

[0026] 6. Wash the solid product obtained by the reaction with deionized water and absolute ethanol for 4 times, and then ...

Embodiment 2

[0029] The preparation process and steps in this embodiment are as follows:

[0030] 1. Weigh 7.88g (0.037mol) of citric acid (C 6 h 8 o 7 ) and 0.5041g (1.89×10 -3 mol) sodium stannate (Na 2 SnO 3 ·3H 2 O);

[0031] 2. Measure 8mL (0.143mol) of ethylene glycol (C 2 h 6 o 2 ), put into the beaker;

[0032] 3. The weighed C 6 h 8 o 7 and SnCl 4 ·5H 2 Add O to ethylene glycol together, and stir rapidly for 10 minutes under the condition of 80°C water bath to dissolve it completely;

[0033] 4. Quickly add 1.5mL (4.41×10 -3 mol) tetrabutyl titanate (Ti(OC 4 h 9 ) 4 ), then add about 20ml of deionized water, and stir rapidly for 1 hour in a water bath at 80°C until a transparent precursor sol is formed;

[0034] 5. Put the above transparent precursor sol into a closed reaction kettle and react in an oven at 200°C for 10 hours;

[0035] 6. Wash the solid product obtained by the reaction with deionized water and absolute ethanol for 4 times, and then dry it at ...

Embodiment 3

[0038] The preparation process and steps in this embodiment are as follows:

[0039] 1. Weigh 7.88g (0.037mol) of citric acid (C 6 h 8 o 7 ) and 1.0302g (2.94×10 -3 mol) tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O);

[0040] 2. Measure 8mL (0.143mol) of ethylene glycol (C 2 h 6 o 2 ), put into the beaker;

[0041] 3. The weighed C 6 h 8 o 7 and SnCl 4 ·5H 2 Add O to ethylene glycol together, and stir rapidly for 10 minutes under the condition of 80°C water bath to dissolve it completely;

[0042] 4. Quickly add 1.5mL (4.41×10 -3 mol) tetrabutyl titanate (Ti(OC 4 h 9 ) 4 ), then add about 12ml of deionized water, and stir rapidly for 1 hour in a water bath at 80°C until a transparent precursor sol is formed;

[0043] 5. Put the above-mentioned transparent precursor sol into a closed reaction kettle, and react in an oven at 170°C for 13 hours;

[0044] 6. Wash the solid product obtained by the reaction with deionized water and absolute ethanol for 4 times...

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Abstract

The invention discloses a preparation method of a titanium dioxide-tin dioxide nano-sosoloid material. The preparation method comprises the following steps: enabling a soluble tin (IV) salt, citric acid and a titanium (IV) salt to react in ethylene glycol till the a transparent precursor sol is formed; enabling the precursor sol to perform a closed reaction for 6-20 hours in a reaction kettle at the temperature of 150-220 DEG C; and washing and drying a reaction product. According to the preparation method disclosed by the invention, hydro-thermal treatment is directly performed on the precursor sol obtained by a sol-gel method, rutile type nano-tin dioxide-titanium dioxide (Ti1-xSnxO2, x is not less than 0.15 and less than 1) sosoloid material with the different titanium-tin weight ratio can be directly prepared without high-temperature sintering, the average particle size is 9-11nm, the particle size distribution is uniform, the specific surface area is large, the photocatalytic ability or the gas-sensing property can be improved, the agglomeration of nano-particles caused by sintering can be avoided, and the process energy consumption can also be effectively reduced; and furthermore, the technical principle is simple, the operation is simple and convenient, and the requirements on equipment are low.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide-tin dioxide nanometer solid solution material, which belongs to the technical field of preparation of inorganic non-metallic materials and nanometer materials. Background technique [0002] Nano-solid solution materials have attracted widespread attention because they can enhance the characteristics of a single substance or have advantages that a single substance does not have. Titanium dioxide and tin dioxide are two semiconductor materials widely used in industrial production and daily life. Among them, rutile titanium dioxide and tin dioxide have many similarities in crystal structure and electronic characteristics, and are easy to form solid solution materials. Compared with single-component materials, titanium dioxide-tin dioxide solid solution materials have better photocatalytic properties and gas-sensing properties, and are more widely used in water pollution treatment, gas sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G19/02B82Y30/00
Inventor 吴爱青高理升房新佐王英先张瑞刘英唐敏李杰
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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