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Preparation method of nickel-stannic oxide-zinc oxide composite thin film

A tin dioxide and composite film technology, applied in the field of materials, can solve problems such as the reduction of photocatalytic activity of composite materials, and achieve the effects of increasing absorption intensity, strong photocatalytic activity, and uniform dispersion.

Inactive Publication Date: 2019-05-24
范佳晨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the tin dioxide-zinc oxide composite material, the tin dioxide layer does not directly contact the reactants. When the zinc oxide coverage is large, the photogenerated electrons conducted to the conduction band of tin dioxide do not participate in the photocatalytic reaction. This reduces the photocatalytic activity of the composite

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0021] The invention discloses a method for preparing a nickel-tin dioxide-zinc oxide composite film, comprising:

[0022] (1) In the presence of acid, dissolve nickel dichloride in n-butanol solution to obtain nickel dichloride solution; dissolve tin dichloride in absolute ethanol, and stir magnetically under the condition of 60-70°C water bath 2 to 3 hours to obtain tin dichloride solution;

[0023] (2) Mix the above-mentioned nickel dichloride solution and tin dichloride solution, and reflux at 70-90° C. for 2-5 hours to obtain nickel-tin dioxide sol;

[0024] (3) slowly adding the nickel-tin dioxide sol into the zinc oxide sol, and heating in a water bath at 50-60°C for 2-3 hours to obtain a nickel-tin dioxide-zinc oxide composite sol;

[0025] (4) Immerse the cleaned carrier in the above-mentioned nickel-tin dioxide-zinc oxide composite sol and pull it 4 to 6 times, the pulling speed is controlled at 1 to 10 cm / min, and after each pulling, the Heat treatment for 5-10 mi...

Embodiment

[0033] 1. Preparation of zinc oxide sol

[0034] 1) Add 1.0 mmol of zinc acetate dihydrate to 40 mL of polyethylene glycol, heat to 180 ° C, and react for 30 min under stirring to form a white turbid liquid;

[0035] 2) Cool the above reaction system to room temperature, and centrifuge at 25°C and 11000rpm for 20 minutes to separate the white precipitate and sol clear liquid. The obtained sol clear liquid is nano-zinc oxide sol with a particle size of 20-90nm, and keep at 30°C The sol clear solution is ready for use.

[0036] 2. Preparation of nickel-tin dioxide-zinc oxide composite film

[0037] (1) In the presence of citric acid, nickel dichloride is dissolved in n-butanol solution to obtain nickel dichloride solution; tin dichloride is dissolved in absolute ethanol, and magnetically stirred for 2.5 h, obtain tin dichloride solution;

[0038] (2) Mix the above-mentioned nickel dichloride solution and the tin dichloride solution according to a certain ratio, control the mo...

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PUM

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Abstract

The invention discloses a preparation method of a nickel-stannic oxide-zinc oxide composite thin film. The preparation method includes the steps that 1, in the presence of acid, nickel dichloride is dissolved in a n-butyl alcohol solution, so that a nickel dichloride solution is obtained, stannic oxide is dissolved in absolute ethyl alcohol, magnetic stirring is conducted fro 2-3 h under the condition of a water bath at the temperature of 60-70 DEG C, and therefore a stannic oxide solution is obtained; 2, the nickel dichloride solution and the stannic oxide solution are mixed and subjected toreflux for 2-5 h at the temperature of 70-90 DEG C, and therefore nickel-stannic oxide sol is obtained; 3, the nickel-stannic oxide sol is slowly added into zinc oxide sol, water-bath heating is conduced for 2-3 h at the temperature of 50-60 DEG C, and therefore nickel-stannic oxide-zinc oxide composite sol is obtained; 4, a cleaned carried is soaked into the nickel-stannic oxide-zinc oxide composite sol to be pulled 4-6 times, pulling speed is controlled to be 1-10 cm / min, every time pulling is ended, heat treatment is conducted for 5-10 min at the temperature of 80-100 DEG C, finally, heat treatment is conducted fro 10-60 min at the temperature of 450-600 DEG C, and accordingly the nickel-stannic oxide-zinc oxide composite thin film is obtained. The photocatalytic activity of the composite thin film is high.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a preparation method of a nickel-tin dioxide-zinc oxide composite film. Background technique [0002] Tin dioxide is a typical n-type semiconductor metal oxide. Because of its special sensitivity to certain gases, electrical conductivity and light transmission, and photocatalytic activity, it has become a catalyst for preparing gas sensors, transparent electrodes, and sewage treatment. Ideal material. [0003] Zinc oxide (ZnO) is a new type of wide bandgap direct bandgap II-VI semiconductor material, with a bandgap width of about 3.2-3.41eV, high transmittance, high mechanical properties, non-toxic and stable chemical properties. features and more. The Band Structure of ZnO and TiO 2 Similarly, under the irradiation of ultraviolet light, the ZnO film can generate electron-hole pairs, form a strong oxidation-reduction system on the surface of the film, and oxidize and degrade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J35/02B01J37/03B01J35/00
Inventor 范佳晨
Owner 范佳晨
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