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Method for preparing rGO-In2O3 nanoparticle composite

A technology of nano-microspheres and composite materials, applied in gallium/indium/thallium compounds, nano-carbon, nanotechnology, etc., can solve the problems of low carrier mobility, low utilization rate, and small comparative area

Inactive Publication Date: 2017-11-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because metal oxide semiconductors do not have room temperature conductivity, their carrier mobility is low, and the comparative area is small, resulting in low utilization.

Method used

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  • Method for preparing rGO-In2O3 nanoparticle composite
  • Method for preparing rGO-In2O3 nanoparticle composite
  • Method for preparing rGO-In2O3 nanoparticle composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of dodecylamine is 0.025 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:1;

[0016] (2) Weigh a certain mass of In obtained in step (1) 2 o 3 , ultrasonically dispersed in 50 ml ethanol solution, and then added a certain amount of aminopropyltriethoxysilane (APTES), stirred at 60 °C for 4 h, the precipitate was washed several times with ethanol centrifugation, at 60 °C drying. which controls In 2 o 3 The mass volume ratio is: 1 mg / mL, and control In 2 o 3 : The molar ratio of APTES is 100:1;

[0017] (3) Weigh a certain amount of graphene oxide GO, and ultrasonically disperse it in 80 mL deionized water to obtain a GO colloidal solution, in which the concentration of GO is 0.0625 mg / mL. ...

Embodiment 2

[0019] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.0285 mol / L, and the concentration of dodecylamine is 0.0285 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:1;

[0020] (2) Weigh a certain mass of In obtained in step (1) 2 o 3 , ultrasonically dispersed in 50 ml ethanol solution, and then added a certain amount of aminopropyltriethoxysilane (APTES), stirred at 60 °C for 4 h, the precipitate was washed several times with ethanol centrifugation, at 60 °C drying. which controls In 2 o 3 The mass volume ratio is: 1 mg / mL, and control In 2 o 3 : The molar ratio of APTES is 84:1;

[0021] (3) Weigh a certain amount of graphene oxide GO, and ultrasonically disperse it in 80 mL deionized water to obtain a GO colloidal solution, in which the concentration of GO is 0.125 mg / mL. ...

Embodiment 3

[0023] (1) Weigh a certain amount of indium trichloride tetrahydrate and dodecylamine, and dissolve them in 35 mL of absolute ethanol, wherein the concentration of indium trichloride tetrahydrate is 0.025 mol / L, and the concentration of dodecylamine is 0.05 mol / L, and the molar ratio of indium trichloride tetrahydrate and dodecylamine is controlled to be 1:2;

[0024] (2) Weigh a certain mass of In obtained in step (1) 2 o 3, ultrasonically dispersed in 50 ml ethanol solution, and then added a certain amount of aminopropyltriethoxysilane (APTES), stirred at 60 °C for 4 h, the precipitate was washed several times with ethanol centrifugation, at 60 °C drying. which controls In 2 o 3 The mass volume ratio is: 1 mg / mL, and control In 2 o 3 : The molar ratio of APTES is 70:1;

[0025] (3) Weigh a certain amount of graphene oxide GO, and ultrasonically disperse it in 80 mL deionized water to obtain a GO colloidal solution, in which the concentration of GO is 0.125 mg / mL. The ...

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Abstract

The invention provides a method for preparing an rGO-In2O3 nanoparticle composite. The method particularly comprises the following steps: performing a hydrothermal reaction on indium(III) chloride tetrahydrate and lauryl amine which are taken as raw materials and performing calcination treatment to obtain indium oxide nanoparticles; then processing the surface of indium oxide by use of aminopropyl triethoxysilane (APTES) to ensure that the surface of indium oxide carries positive charges; and dispersing indium oxide carrying the positive charges and graphene oxide in deionized water to ensure mutual combination, and finally, performing reduction on graphene oxide by a hydrothermal method to obtain the rGO-In2O3 nanoparticle composite at last. The method is simple in production process, and the obtained rGO-In2O3 nanoparticle composite adopts a p-n heterogeneous structure and combines the advantages of large specific area of rGO and an In2O3 semi-conductor material. The method is suitable for an rGO and metal semi-conductor oxide combining process, so that the material with favorable performance is obtained.

Description

technical field [0001] The present invention relates to a kind of rGO-In 2 o 3 The invention relates to a method for preparing nano-microsphere composite materials, which belongs to the technical field of preparation technology of advanced nano-functional materials. Background technique [0002] In recent years, with the large-scale industrial production in our country, there have been unhealthy phenomena such as high energy consumption and high pollution. The state has strengthened the management of corporate pollution and is committed to forming a new industrial and economic environment. Various gas-sensitive sensing materials have become hot. In the fields of military and fire protection, it is often necessary to detect toxic gases, so as to protect the safety of personnel and avoid unnecessary sacrifices. In 2 o 3 It is an N-type semiconductor material with good gas-sensing properties. Its characteristics include: a wide band gap, small resistivity and high catalyti...

Claims

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Application Information

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IPC IPC(8): C01G15/00C01B32/184G01N27/12B82Y30/00B82Y40/00
CPCC01G15/00B82Y30/00B82Y40/00C01P2002/72C01P2002/85C01P2004/03C01P2004/04G01N27/12
Inventor 张苏宋鹏王琦杨中喜郝佩
Owner UNIV OF JINAN
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