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Method for preparing nano-zinc oxide

A nano-zinc oxide, electrochemical technology, applied in electrolytic inorganic material coating and other directions, can solve the problems of inflexible experimental design, long preparation period, complicated operation, etc., and achieve the effect of low material growth temperature, low cost and high deposition rate.

Inactive Publication Date: 2013-12-25
CHANGCHUN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the above-mentioned background technology due to complicated operation, high cost, inflexible experimental design, long preparation period, etc.
We use the electrochemical deposition method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] ZnO nanopillars were grown on Si substrates.

[0014] First, the Si substrate is cleaned before deposition. Then, the indium film was vapor-deposited on the above-mentioned Si working electrode and the counter electrode made of platinum sheet respectively, and then leads were drawn out. The electrolyte consists of 50 mmol / L Zn(NO 3 ) 2 ·6H 2 O, 10 mmol / L urotropine (C 6 h 12 N 4 ) aqueous solution, add 0.1 mol / L KNO to the solution 3 As an auxiliary electrolyte, the deposition is carried out at a constant voltage, the deposition voltage is -0.8V, and the temperature is controlled at 60°C by a water bath temperature control device during the deposition process. The deposition time was 1 hour. The grown ZnO nanocolumns have a length of about 300nm and a diameter of about 80nm.

Embodiment 2

[0016] In this embodiment, only the deposition voltage is changed to grow the sample of the present invention.

[0017] Other conditions are the same as above, except that the deposition voltage is changed to -0.6V. The ZnO nanocolumns grown at this time have a length of about 200 nm and a diameter of about 50 nm.

Embodiment 3

[0019] In this embodiment, only the deposition time is changed, and the samples of the present invention are grown.

[0020] Other conditions are the same as in Example 2, except that the deposition time is changed to 2h. The ZnO nanocolumns grown at this time have a length of about 400 nm and a diameter of about 45 nm.

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Abstract

The invention belongs to the field of preparation of a nano-ZnO (zinc oxide) photocatalyst, and mainly discloses a method for preparing nano-zinc oxide by an electrochemical deposition method. The method comprises the following steps: taking a Si sheet as a working electrode, a platinum sheet as a counter electrode and Ag / AgCl as a reference electrode; taking Zn (NO3) 2.6H2O and methenamine (C6H12N4) as raw materials and water as a solvent, preparing into a solution in a certain proportion, and adding 0.1mol / L of KNO3 into the solution as an auxiliary electrolyte solution; and putting the prepared steamed indium working electrode and steamed indium counter electrode into the electrolyte solution, controlling the temperature of the electrolyte solution at 50-70 DEG C by a thermostat, stabilizing the deposition voltage at -0.6V to -1.2V, and depositing for 0.5-2.5 hours to obtain the nano-zinc oxide by the electrochemical method. The method has the advantages of simple equipment, low cost, low material growing temperature and the like, and is applicable to scientific research as well as large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of semiconductor material growth and relates to the preparation of nanometer zinc oxide by means of an electrochemical deposition method. Background technique [0002] Industrial development has caused the limited water resources on the earth to be increasingly polluted, and the deterioration of water quality seriously threatens human health. Removing toxic and harmful chemicals from water has become an important task for all countries. Photocatalytic technology is one of the effective methods for treating wastewater. [0003] At present, research on semiconductor photocatalysts at home and abroad mainly focuses on nano-TiO 2 In the study of photocatalytic performance and degradation of pollutants, due to nano-TiO 2 It has the disadvantages of high manufacturing cost, complex production process and large equipment investment. Therefore, the use of TiO 2 As a photocatalyst for sewage treatment, it is not economical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04
Inventor 曹萍
Owner CHANGCHUN INST OF TECH