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Preparation method and application of flower-like structure CuO-In2O3 composite material

A cuo-in2o3, composite material technology, applied in gallium/indium/thallium compounds, analytical materials, material resistance, etc., to achieve high sensitivity, simple manufacturing process, and good crystallization effect

Pending Publication Date: 2022-01-25
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the detection characteristics of some gases have been improved by nanonization, doping, and surface modification of sensitive materials, there is still a huge room for improvement.

Method used

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  • Preparation method and application of flower-like structure CuO-In2O3 composite material
  • Preparation method and application of flower-like structure CuO-In2O3 composite material
  • Preparation method and application of flower-like structure CuO-In2O3 composite material

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preparation example Construction

[0035] Flower-like structure CuO-In 2 o 3 Composite material preparation method, comprises the following steps:

[0036] Step 1: Dissolve a certain amount of indium chloride and copper nitrate in a mixed solution prepared by 20 mL of absolute ethanol and 60 mL of distilled water, stir with a magnetic stirrer for 30 minutes at 40°C, and then add twelve Alkyl sodium sulfate and urea, continue to fully stir for 30 minutes, and prepare a hydrothermal synthesis precursor reaction solution;

[0037] Step 2: Transfer the precursor reaction solution prepared in Step 1 into a polytetrafluoroethylene-lined stainless steel autoclave with a filling degree of 80%, and seal it. The temperature was kept at 160° C. for 5 hours, and then cooled to room temperature with the furnace to obtain the reaction product.

[0038] Step 3: The reaction product obtained in Step 2 is centrifuged, washed repeatedly with distilled water and absolute ethanol, and then dried.

[0039] Step 4: Put the dried...

Embodiment 1

[0046] (1) Preparation of flower-like structure In 2 o 3 Material

[0047] Step 1: Dissolve 0.293 g of indium chloride in a mixed solution prepared by 20 mL of absolute ethanol and 60 mL of distilled water, stir with a magnetic stirrer for 30 minutes at 40°C, and then add 0.519 g of sodium lauryl sulfate to the above solution and 2.102g of urea, and continued to fully stir for 30 minutes to prepare a hydrothermal synthesis precursor reaction solution.

[0048] Step 2: Transfer the precursor reaction solution prepared in Step 1 into a 100 ml polytetrafluoroethylene-lined stainless steel autoclave with a filling degree of 80%, and seal it.

[0049] Step 3: Put the reactor in step 2 in an oven, keep it warm at 160° C. for 5 hours, and then cool it down to room temperature.

[0050] Step 4: Centrifuge the reactant solution prepared in Step 3 to obtain a white precipitate, which is then repeatedly washed with distilled water and absolute ethanol.

[0051] Step 5: Place the prod...

Embodiment 2

[0057] (1) Preparation of flower-like structure CuO-In 2 o 3 composite material

[0058] Step 1: Dissolve 0.293 g of indium chloride and 0.0072 g of copper nitrate in a mixed solution prepared by 20 mL of absolute ethanol and 60 mL of distilled water. After stirring with a magnetic stirrer for 30 minutes at 40°C, add 0.519 g of ten Sodium dialkylsulfate and 2.102 g urea were continuously stirred for 30 minutes to prepare a hydrothermal synthesis precursor reaction solution.

[0059] Steps 2, 3, 4, 5 and 6 are the same as in Example 1.

[0060] (2) Flower-like structure CuO-In 2 o 3 Structural Characterization of Composite Materials

[0061] The crystal structure of the product was characterized by XRD powder diffractometer (XRD, PANalytical X’Pert Pro). from figure 1 It can be seen that in the sample except the cubic phase In 2 o 3 Except for the peak of CuO, no diffraction peak of CuO appears. All diffraction characteristic peaks are very sharp, and no other impurit...

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Abstract

The invention discloses a preparation method and application of a flower-shaped structure CuO-In2O3 composite material, and relates to a preparation method and application of a composite material. The flower-shaped structure CuO-In2O3 composite material is prepared by adopting a simple and efficient one-step hydrothermal method, and an optimal structure is established by changing the proportion of raw materials, so that the flower-shaped structure CuO-In2O3 composite material has excellent application performance. According to the invention, the whole production process is simple in process, low in cost, good in controllability, non-toxic and harmless, and the prepared material is high in purity, good in crystallization, good in dispersity and suitable for large-scale industrial production; and the prepared flower-shaped structure CuO-In2O3 composite material shows relatively high sensitivity, good selectivity and stability to formaldehyde at a relatively low temperature, is applied to a gas sensor made of a gas sensitive material and is used for detecting formaldehyde gas, so that the flower-shaped structure CuO-In2O3 composite material has a wide application prospect in the aspect of detecting organic volatile gas in an indoor environment.

Description

technical field [0001] The invention relates to a preparation method and application of a composite material, in particular to a preparation method and application of a flower-like structure CuO-In2O3 composite material. Background technique [0002] With the improvement of people's living standards, exquisite indoor decoration is very common, but the indoor air pollution encountered therewith has attracted more and more attention. Formaldehyde, as an indoor irritating and toxic volatile gas, widely exists in decorative materials, coatings, plywood, furniture and other materials, seriously endangering human health. Therefore, it is particularly important to be able to accurately and quickly monitor formaldehyde gas in the air. At present, the common detection method for volatile organic compounds such as formaldehyde is an off-line detection method using solid-state extraction and gas chromatography combined analysis with reference to national standards, which has high tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00C01G3/02G01N27/12
CPCC01G15/00C01G3/02G01N27/125C01P2002/72C01P2004/03C01P2004/61C01P2004/82
Inventor 孟丹乔桐桐伞晓广刘宇涧梅耀瀚
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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