Zinc oxide/cuprous oxide nano heterojunction photocatalytic material and method for preparing same

A technology of photocatalytic materials and zinc oxide nanorods, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, chemical instruments and methods, etc., to achieve the effect of improving photocatalytic efficiency

Inactive Publication Date: 2010-05-19
BEIHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

For Cu 2 The preparation of O / ZnO heterojunction materials and the research on photocatalytic degradation of organic pollutants have not been reported yet

Method used

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  • Zinc oxide/cuprous oxide nano heterojunction photocatalytic material and method for preparing same
  • Zinc oxide/cuprous oxide nano heterojunction photocatalytic material and method for preparing same
  • Zinc oxide/cuprous oxide nano heterojunction photocatalytic material and method for preparing same

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Embodiment Construction

[0034] (1) Zinc oxide / cuprous oxide nano-heterojunction photocatalytic material of the present invention, such as figure 1 As shown, its structural composition is as follows: it is composed of silicon substrate 1 , cuprous oxide film 2 deposited on silicon substrate 1 and zinc oxide nanorods 3 grown in liquid phase on cuprous oxide film 2 .

[0035] The silicon substrate 1 is a single crystal silicon wafer of (111) plane.

[0036] The thickness of the cuprous oxide film 2 is 150nm.

[0037] The zinc oxide nanorods 3 have a length of 300nm and a diameter of 40nm.

[0038] (2) The preparation method of zinc oxide / cuprous oxide nano-heterojunction photocatalytic material of the present invention, the concrete steps of this method are as follows:

[0039] Step 1: Preparation of substrate

[0040] Cut the purchased Si wafer into a substrate suitable for the size of the instrument and equipment, boil the cut substrate in a mixed solution of concentrated sulfuric acid and hydrogen...

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Abstract

The invention relates to zinc oxide/cuprous oxide nano heterojunction photocatalytic material, wherein the zinc oxide has the molecular formula of ZnO, and the cuprous oxide has the molecular formula of Cu2O. The ZnO/Cu2O nano heterojunction photocatalytic material comprises a silicon substrate, a Cu2O film and ZnO nano rods, wherein the Cu2O film is deposited on the silicon substrate, and the ZnO nano rod grows on the liquid phase of the Cu2O film. The method for preparing the ZnO/Cu2O nano heterojunction photocatalytic material comprises the following five steps: (1) preparing a substrate; (2) vacuumizing a sputtering film forming cavity; setting all parameters of a magnetically controlled sputtering device and depositing a Cu2O thin film layer; (4) obtaining a Cu2O thin film after stopping the magnetically controlled sputtering device for 30min; and (5) vertically putting the silicon substrate on which the Cu2O thin film is deposited into a beaker containing the mixed solution of zinc acetate and hexamethyleneimine, putting the beaker in a water-bath kettle to preserve heat for 6 hours, taking the beaker out of the water-bath kettle, cooling the beaker to room temperature, cleaning the beaker with deionized water, and drying the beaker at room temperature to obtain the growing ZnO nano rod array. The invention has wide use value and application prospect in the field of the preparation technology of the nano heterojunction photocatalytic material.

Description

(1) Technical field: [0001] Zinc oxide / cuprous oxide nano-heterojunction photocatalytic material and preparation method thereof of the present invention, namely in p-type Cu 2 On the substrate of the O thin film as the seed layer, the n-type ZnO nanorod array is grown, thereby forming a p-n heterojunction photocatalytic material with a nanostructure, and obtaining a nanostructure heterojunction with good photocatalytic performance excited by ultraviolet-visible light The invention relates to a photocatalytic material; it belongs to the technical field of preparation of nanostructure heterojunction photocatalytic materials. (two) background technology: [0002] The global energy crisis and environmental pollution crisis have increasingly become the focus of attention of all parties. At present, photocatalytic degradation of pollutants and photocatalytic hydrogen production have become a feasible method to solve these two crises. For semiconductor oxide photocatalytic materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J37/03A62D3/10
Inventor 王聪崔银芳吴素娟
Owner BEIHANG UNIV
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