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Preparation method and application of metal/cuprous oxide composite nano material

A technology of composite nanomaterials and cuprous oxide, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, nanotechnology, etc., can solve the undiscovered detection of hydrogen peroxide and other problems, and achieve good electrocatalytic performance Effect

Inactive Publication Date: 2016-06-15
LIWANG CHEM NANTONG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no one has found anyone using Au-Ag / Cu 2 O composite nanomaterials to detect hydrogen peroxide

Method used

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  • Preparation method and application of metal/cuprous oxide composite nano material
  • Preparation method and application of metal/cuprous oxide composite nano material
  • Preparation method and application of metal/cuprous oxide composite nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: prepare the cuprous oxide Cu of cube 2 o

[0041] Cu 2 The hydrothermal synthesis method adopted in the preparation of O; 20ml, 0.009mol L -1 The ascorbic acid solution was added to 32ml, 0.391mol·L -1 In the sodium hydroxide solution, stir for 5min, then add 32ml, 0.005mol·L -1 Copper acetate monohydrate solution, stirred for 15 minutes, washed with pure water and absolute ethanol after reaction, centrifuged, and finally dried in a vacuum oven at 60°C for 12 hours to obtain cubic cuprous oxide Cu 2 O powder.

Embodiment 2

[0042] Embodiment 2: prepare 15%-15% Au-Ag / Cu 2 O composite nanomaterials

[0043] Take by weighing the Cu prepared by 0.05g embodiment 1 2 O powder was dissolved in 50ml of pure water, then ultrasonically dispersed in an ultrasonic machine with a power of 250W for 0.5h, and then 1.5ml, 0.03mol L -1 HAuCl 4 solution, stirred for 0.5h; then reduced by light for 0.5h under a tungsten lamp with a power of 500W, after the reaction, washed with pure water and absolute ethanol, centrifuged, and dried in a vacuum oven at 60°C to obtain Au and Cu 2 Au / Cu with O mass ratio of 15% 2 O composite nanomaterials.

[0044] Weigh 0.05g15%Au / Cu 2 O powder was dissolved in 50ml of pure water, then ultrasonically dispersed in an ultrasonic machine with a power of 250W for 0.5h, and then 1.5ml, 0.05mol L -1 AgNO 3 solution, stirred for 0.5h; then reduced by light for 0.5h under a tungsten lamp with a power of 500W, after the reaction, washed with pure water and absolute ethanol, centrifuge...

Embodiment 3

[0046] Embodiment 3: prepare 30%Au / Cu 2 O composite nanomaterials

[0047] Take by weighing the Cu prepared by 0.05g embodiment 1 2 O powder was dissolved in 50ml of pure water, then ultrasonically dispersed in an ultrasonic machine with a power of 250W for 0.5h, and then 3.0ml, 0.03mol L -1 HAuCl 4 solution, stirred for 0.5h; then reduced by light for 0.5h under a tungsten lamp with a power of 500W, after the reaction, washed with pure water and absolute ethanol, centrifuged, and dried in a vacuum oven at 60°C to obtain Au and Cu 2 Au / Cu with O mass ratio of 30% 2 O composite nanomaterials.

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Abstract

The invention provides a preparation method and an application of a metal / cuprous oxide composite nano material. The preparation method includes the steps of: (201) preparing cubic Cu2O; (202) weighing Cu2O powder prepared in the step (201) and dissolving the Cu2O powder in pure water, performing ultrasound dispersion, adding a salt solution containing metal cationic ion B<+>, magnetically stirring the mixture uniformly, performing a reduction reaction under irradiation of a tungsten light, and washing, centrifugally separating and drying a reaction product to obtain a B / Cu2O composite nano material; (203) weighing the B / Cu2O composite nano material and dissolving the B / Cu2O composite nano material in pure water, performing ultrasound dispersion, adding a salt solution containing metal cationic ion C<+>, magnetically stirring the mixture uniformly, performing the reduction reaction under irradiation of the tungsten light, and washing, centrifugally separating and drying a reaction product to obtain a B-C / Cu2O composite nano material. The Au-Ag / Cu2O composite nano material, compared with other single metal composite electric-catalytic materials and single electrode or Cu2O, has better electric-catalytic performance in electrochemical detection on H2O2.

Description

technical field [0001] The invention relates to an electrocatalyst, in particular to a preparation method and application of a metal / cuprous oxide composite nanomaterial. The preparation process is simple, the product performance is stable, and the electrocatalytic performance is good. Background technique [0002] hydrogen peroxide (H 2 o 2 ) is a chemical widely used in food, pharmaceutical, paper and chemical industries, and is also a by-product of a large number of oxidase-catalyzed reactions, so the accurate and rapid detection of H 2 o 2 It is of great significance in biochemistry and environmental science. with H 2 o 2 Compared to conventional techniques for the determination of electrochemical biosensing, enzyme-free detection of H 2 o 2 It has many advantages such as low cost, easy preparation, rapid detection, high selectivity and high sensitivity. As an important P-type semiconductor material, cuprous oxide is also an important raw material for inorganic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B82Y30/00G01N27/48
CPCB01J23/8926B82Y30/00G01N27/48
Inventor 张晓明姜德立
Owner LIWANG CHEM NANTONG
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