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Method for preparing cuprous oxide/ bacterial cellulose nano composite material

A nano-composite material and bacterial cellulose technology, applied in copper oxide/copper hydroxide, nanotechnology, nanotechnology, etc., can solve problems such as difficult recycling and reuse, and achieve the effect of overcoming recycling difficulties

Inactive Publication Date: 2011-07-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalytic, electrical and optical activities of nano cuprous oxide particles are often limited to a certain extent due to the agglomeration caused by the high surface energy of nanoparticles. At the same time, when cuprous oxide nanoparticles are used as catalysts for sewage treatment, they are suspended in It plays a catalytic role in water, but it is difficult to recycle and reuse because it floats and cannot sink

Method used

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  • Method for preparing cuprous oxide/ bacterial cellulose nano composite material
  • Method for preparing cuprous oxide/ bacterial cellulose nano composite material
  • Method for preparing cuprous oxide/ bacterial cellulose nano composite material

Examples

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example 1

[0014] The bacterial cellulose culture method required for the preparation of the composite material is as follows: Glucose (12.5 g), yeast powder (3.75 g), peptone (5.00 g) and disodium hydrogen phosphate (5.00 g) were dissolved in 500 mL of distilled water and placed on ice Acetic acid was used to adjust the pH of the solution to 4.7 to obtain a culture medium solution of Acetobacter xylinum. The culture solution was divided into Erlenmeyer flasks and steam sterilized at 115°C for 30min. After cooling to room temperature, the inoculation method was carried out using the slope inoculation method, followed by stirring at 30°C for 48h (stirring speed r=160r / min). Finally, the culture solution was transferred to a petri dish and cultured in a biochemical incubator (30° C.), and the gel film of BC could be obtained after 5 days. Then BC is cleaned up, and the cleaning process is as follows: boil the bacterial cellulose gel film twice in distilled water, each holding time is 20min...

example 2

[0017] The bacterial cellulose film prepared and cleaned up (preparation method is the same as example 1) is immersed in pH=1, concentration is 49h in the sulfuric acid solution of 0.05mol / L, then it is put into pH=1 (mass fraction is 98% sulfuric acid Solution regulation), the concentration is the NaIO of 0.22mol / L 4 In the solution, react for 2 hours under the condition of avoiding light, temperature at 52°C and constant stirring, then wash the sample with a concentration of 2.0mol / L ethylene glycol solution, and then wash it with deionized water for several times, and then soak it in pH =3.14, the concentration is the NaClO of 0.22mom / L 2 solution for 49h, and then washed the sample with 2.0mol / L ethylene glycol solution and deionized water successively, and then immersed in 0.17mol / L Cu(NO 3 ) 2 After 48 hours in the solution, it was taken out and rinsed with deionized water several times, and then put into a hydroquinone solution with a pH=9 and a concentration of 0.017...

example 3

[0019] The bacterial cellulose film prepared and cleaned up (preparation method is the same as example 1) is immersed in pH=1, and concentration is 50h in the sulfuric acid solution of 0.06mol / L, then it is put into pH=1 (mass fraction is 98% sulfuric acid solution adjustment), the concentration is the NaIO of 0.25mol / L 4 In the solution, react for 3 hours under the condition of avoiding light, temperature at 55°C and constant stirring, then wash the sample with a concentration of 3.0mol / L ethylene glycol solution, wash it with deionized water several times, and then soak it in pH =3.14, the concentration is the NaClO of 0.25mom / L 2 solution for 50 h, then washed the sample with ethylene glycol solution with a concentration of 3.0 mol / L and deionized water in sequence, and then immersed in Cu(NO 3 ) 2 After 50 hours in the solution, take it out and rinse it with deionized water several times, and then put it into a hydroquinone solution with a pH=9 and a concentration of 0.0...

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Abstract

The invention relates to a method for preparing a cuprous oxide / bacterial cellulose nano composite material. The preparing method comprises the following steps of: obliquely inoculating acetobacter xylinum strains into culture solution, and culturing the strains to obtain a bacterial cellulose gel film; performing surface activation treatment on the bacterial cellulose gel film in sulfuric acid solution and sodium hypochlorite solution respectively; and sequentially soaking the surface activated bacterial cellulose gel film into Cu(NO3)2 solution and hydroquinone solution to perform reduction reaction to obtain the cuprous oxide / bacterial cellulose nano composite material. The method has the advantages that: the preparation process is simple; and the prepared composite material keeps the nano structure of cuprous oxide particles, simultaneously has good strength performance, and has wide application prospect on the aspects of electrode devices, catalysts, gas sensitive sensors and the like.

Description

technical field [0001] The invention relates to a method for preparing a cuprous oxide / bacterial cellulose nanocomposite material, which belongs to the cuprous oxide / bacterial cellulose nanocomposite material technology with a three-dimensional space network structure. Background technique [0002] Cuprous oxide (Cu 2 O) is a p-type semiconductor material, which has some special properties in terms of optical, electrical and catalytic properties, so it has been more and more widely used in solar cells, electrode devices, catalysts, and gas sensors. At present, there are many methods for preparing nano-cuprous oxide, including chemical deposition method, electrochemical method, irradiation method, polyol method and so on. However, the catalytic, electrical and optical activities of nano cuprous oxide particles are often limited to a certain extent due to the agglomeration caused by the high surface energy of nanoparticles. At the same time, when cuprous oxide nanoparticles a...

Claims

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Application Information

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IPC IPC(8): C12P19/04C01G3/02B82Y40/00B82Y30/00
Inventor 何芳刘贵高黄远万怡灶王玉林
Owner TIANJIN UNIV
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