Two-step preparation method of anodic oxidation of cuprous oxide nanosheet powder material

An anodic oxidation and nano-sheet technology, applied in anodic oxidation and other directions, can solve the problems of high energy consumption, complex process, and additive removal problems, and achieve the effects of low energy consumption, obvious photoelectric response, and short experiment cycle

Inactive Publication Date: 2016-01-13
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previous anodic oxidation method, dendritic, microcrystalline or porous Cu can only be obtained by using a large current pulse power supply or adding additives. 2 O powder materials, not only the process is complicated, the energy consumption is large, but the removal of additives is also a difficult problem

Method used

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  • Two-step preparation method of anodic oxidation of cuprous oxide nanosheet powder material
  • Two-step preparation method of anodic oxidation of cuprous oxide nanosheet powder material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 10.7g (0.2mol) NH 4 Cl was dissolved in 1L deionized water to prepare a buffer solution, and the pH value was adjusted to 6 with dilute HCl solution. Cut the high-purity copper foil into small pieces of 4cm×3cm. After cleaning, grinding and polishing, stick the back and surroundings with waterproof tape so that the exposed area is 4cm 2 (2cm x 2cm). Fix the copper foil (anode) and graphite electrode (cathode) on both sides of the electrolytic cell, and connect them directly to the two poles of the DC power supply with wires. Pour the electrolyte into the electrolytic cell, adjust the DC power supply to the constant current mode, and set the current to 5mA / cm 2 , starts to oxidize at room temperature. After 10 minutes, the power was cut off, and the sample was washed and dried to obtain a dark red CuCl film. Immerse the CuCl film in 0.3% H 2 o 2 The solution was placed under natural light to react for 30 minutes, and after taking it out, it was washed and dried to ...

Embodiment 2

[0027] 10.7g (0.2mol) NH 4 Cl was dissolved in 1L deionized water to prepare a buffer solution, and the pH value was adjusted to 9 with dilute HCl solution. Cut the high-purity copper foil into small pieces of 4cm×3cm. After cleaning, grinding and polishing, stick the back and surroundings with waterproof tape so that the exposed area is 4cm 2 (2cm x 2cm). Fix the copper foil (anode) and graphite electrode (cathode) on both sides of the electrolytic cell, and connect them directly to the two poles of the DC power supply with wires. Pour the electrolyte into the electrolytic cell, adjust the DC power supply to the constant current mode, and set the current to 5mA / cm 2 , starts to oxidize at room temperature. Cut off the power after 10 minutes, and the sample was washed and dried to obtain a blue-green loose copper oxychloride film. Immerse the sample in 0.3% H 2 o 2 The solution was placed under natural light to react for 30 minutes, and after taking it out, it was washed...

Embodiment 3

[0029] 10.7g (0.2mol) NH 4 Cl was dissolved in 1L deionized water to prepare a buffer solution, and the pH value was adjusted to 9 with dilute HCl solution. Cut the high-purity copper foil into small pieces of 4cm×3cm. After cleaning, grinding and polishing, stick the back and surroundings with waterproof tape so that the exposed area is 4cm 2 (2cm x 2cm). Fix the copper foil (anode) and graphite electrode (cathode) on both sides of the electrolytic cell, and connect them directly to the two poles of the DC power supply with wires. Pour the electrolyte into the electrolytic cell, adjust the DC power supply to the constant current mode, and set the current to 5mA / cm 2 , starts to oxidize at room temperature. Cut off the power after 10 minutes, and the sample was washed and dried to obtain a blue-green loose copper oxychloride film. Immerse the sample in 1% H 2 o 2In the solution, put it under a xenon lamp light source to react for 60 minutes, take it out, wash and dry it ...

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Abstract

The invention discloses an anodization two-step preparation method of a cuprous oxide nanosheet powder material. The method comprises the following steps: anodization: using an ammonium chloride buffer solution as an electrolyte, regulating the pH value of the electrolyte to 4-10, and carrying out anodization reaction by using a copper foil as the anode and a graphite electrode or platinum electrode as the cathode; and foaming treatment: after the reaction finishes, cleaning the copper foil, drying, immersing the copper foil in a low-concentration oxydol solution, carrying out foaming reaction for 10-60 minutes, taking out, flushing, and drying to obtain the cuprous oxide nanosheet powder material which is attached to the copper foil substrate. The preparation technique disclosed by the invention is simple and easy to implement, has the advantages of low energy consumption, low cost and no pollution, is suitable for mass production, and has very important meanings for saving the energy sources and resources and improving the environment; and the prepared powder material has the advantages of large specific area and high catalytic activity, can be well attached to the substrate, and is convenient for recovery and reutilization.

Description

technical field [0001] The invention relates to a method for preparing a metal-based composite film, in particular to a method for preparing a cuprous oxide nanosheet powder material by an anodic oxidation two-step method. Background technique [0002] Cuprous oxide (Cu 2 O) is a P-type semiconductor material, which has the advantages of cheapness, large storage capacity, easy acquisition, nontoxicity, and environmental friendliness. Cu 2 The bandgap of O is about 2.1eV. It is a semiconductor material with great potential. It has broad application prospects in the fields of photovoltaic industry, water splitting to produce hydrogen under visible light conditions, and photocatalytic decomposition of organic pollutants. In addition, Cu 2 The special crystal structure of O makes it have great application potential in ion battery anode materials. Traditional Cu 2 O preparation methods include copper direct oxidation, sintering, copper sputtering under aerobic conditions, ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/34
Inventor 仵亚婷张桢胡文彬钟澄邓意达
Owner SHANGHAI JIAOTONG UNIV
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