Method for preparing cuprous oxide (Cu2O) with hierarchical flower-like structure

A cuprous oxide, flower-like structure technology, applied in the field of preparation of nano-cuprous oxide, can solve the problems of small specific surface area and low roughness factor, and achieve increased specific surface area, obvious pore size distribution, high crystallinity and stability. Effect

Inactive Publication Date: 2012-06-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention will solve the Cu prepared by the prior art 2 O nanomaterials have the problems of relatively small specific surface area and low roughness factor, and a method for preparing cuprous oxide with hierarchical flower-like structure is provided.

Method used

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  • Method for preparing cuprous oxide (Cu2O) with hierarchical flower-like structure
  • Method for preparing cuprous oxide (Cu2O) with hierarchical flower-like structure
  • Method for preparing cuprous oxide (Cu2O) with hierarchical flower-like structure

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specific Embodiment approach 1

[0010] Embodiment 1: This embodiment is a method for preparing cuprous oxide with a hierarchical flower-like structure, which is specifically completed according to the following steps:

[0011] 1. Preparation of copper salt solution: completely dissolve copper salt in water at room temperature, and configure it into Cu 2+ A solution of copper salt with a molar concentration of 0.014 to 0.02mol / L; 2. Activation: add a nonionic surfactant to the solution of copper salt prepared in step 1 at room temperature, and stir at 100r / min to 300r / min Stir at high speed for 10min to 90min to obtain the activated copper salt solution; 3. Reduction: Use a micro-injector to drip the reducing agent solution into the activated copper salt solution at a rate of five drops per minute, and set the solution at 20°C At ~50°C, stir at a stirring speed of 200r / min~400r / min for 150min~300min to obtain a cuprous oxide precipitate; 4. Separation and washing: separate the cuprous oxide precipitate prepar...

specific Embodiment approach 2

[0051] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the copper salt described in step 1 is copper acetate, copper nitrate, anhydrous copper sulfate, anhydrous copper sulfate or copper chloride. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0052] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the nonionic surfactant described in step two is selected from polyvinylpyrrolidone, propylene glycol polyoxypropylene polyoxyethylene ether, isomeric Alcohol polyoxyethylene polyoxypropylene ether, polyurethane polyoxypropylene polyoxypropylene ether, polyethylene glycol monooleate, stearyl ethylene urea, coconut oil reduced alcohol, cetyl alcohol, oleyl alcohol, oleic acid and hard Fatty acid. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for preparing cuprous oxide (Cu2O) with a hierarchical flower-like structure, relates to a method for preparing nanometer Cu2O, and aims to solve the problem that a Cu2O nanometer material prepared by the prior art has a relatively small specific surface area and a relatively low roughness factor. The method comprises the following steps of: firstly, preparing a copper salt solution; secondly, adding a nonionic surfactant for activating; thirdly, adding a reducing agent solution for reducing; and finally, separating, washing and drying in turn to obtain the Cu2O with the hierarchical flower-like structure. The method has the advantages that: 1, the Cu2O with the hierarchical flower-like structure is prepared; 2, compared with the conventional Cu2O nanometer material, the Cu2O has a larger specific surface area and obvious pore size distribution; 3, the Cu2O has high crystallinity and stability; and 4, the Cu2O can be used for degrading toxic and harmful pollutants in water under the catalysis of visible light. The method is mainly used for preparing the Cu2O with the hierarchical flower-like structure.

Description

technical field [0001] The invention relates to a method for preparing nano cuprous oxide Background technique [0002] Due to the continuous improvement of people's requirements for environmental quality and the development of existing environmental protection technologies, highly active photocatalytic materials have attracted much attention because of their important applications in the fields of sewage treatment and air purification. The traditional photocatalytic material TiO 2 As a photocatalyst for the degradation of organic pollutants, the effect is very obvious. But TiO 2 The band gap (3.2eV) is wide, so it needs strong ultraviolet light to excite, generate oxidation holes, and carry out photocatalytic reaction. Because the artificial ultraviolet light source is relatively expensive, unstable and consumes a lot of electric energy, more importantly, ultraviolet light is less than 5% of the sunlight reaching the earth's surface, while visible light accounts for near...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00
Inventor 付宏刚孟祥影田国辉陈亚杰周娟曲阳
Owner HEILONGJIANG UNIV
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