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Preparation method of colloidal ZnO/Au composite nanomaterials

A composite nanomaterial and colloid technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems affecting the physical and chemical properties of composite nanostructures, limit applications, and achieve excellent photocatalytic performance.

Inactive Publication Date: 2019-10-18
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The agglomeration effect of nanoparticles seriously affects the physical and chemical properties of ZnO / Au composite nanostructures, which limits its application in photocatalysis, biotechnology and optoelectronic devices

Method used

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  • Preparation method of colloidal ZnO/Au composite nanomaterials
  • Preparation method of colloidal ZnO/Au composite nanomaterials
  • Preparation method of colloidal ZnO/Au composite nanomaterials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] (1) Mix 5 mL of oleylamine and 5 mL of tetralin evenly to obtain a mixed solvent; 2 Under protected conditions, 0.1 g of HAuCl 4 4H 2 O was fully dissolved in the mixed solution of oleylamine and tetralin to form precursor solution I; then, the mixed solution was heated to 25 °C by a water bath and maintained at this temperature for 10 min.

[0020] (2) Fully dissolve 0.5 mmol of tert-butylamine borane complex in 1 mL of oleylamine and 1 mL of tetralin mixed solution to form precursor solution II.

[0021] (3) Under ultrasonic conditions, 0.3 mmol of zinc acetate dihydrate was fully dissolved in 2 mL of oleylamine and 4 mL of dodecanol to form precursor solution III.

[0022] (4) Under the condition of magnetic stirring, the precursor solution II was injected dropwise into the precursor solution I, and kept at 25 °C for 1 h to obtain the colloidal solution IV.

[0023] (5) Add 10 mL of absolute ethanol to the colloidal solution IV; then, obtain the precipitate of Au ...

Embodiment approach 2

[0032] (1) Mix 5 mL of oleylamine and 5 mL of tetralin evenly to obtain a mixed solvent; under the conditions of magnetic stirring and nitrogen protection, 0.05 g of HAuCl 4 4H 2 O was fully dissolved in the mixed solution of oleylamine and tetralin to form precursor solution I; then, the mixed solution was heated to 10 °C by a water bath and maintained at this temperature for 10 min.

[0033] (2) Fully dissolve 0.2 mmol of tert-butylamine borane complex in 1 mL of oleylamine and 1 mL of tetralin mixed solution to form precursor solution II.

[0034] (3) Under ultrasonic conditions, 0.24 mmol of zinc acetate dihydrate was fully dissolved in 2 mL of oleylamine and 4 mL of dodecanol to form precursor solution III.

[0035] (4) Under the condition of magnetic stirring, the precursor solution II solution was injected into the precursor solution I dropwise, and the reaction was maintained at 10 °C for 1 h to obtain the colloidal solution IV.

[0036] (5) Add 10 mL of absolute eth...

Embodiment approach 3

[0040] (1) Mix 5 mL of oleylamine and 5 mL of tetralin evenly to obtain a mixed solvent; under the conditions of magnetic stirring and nitrogen protection, 0.15 g of HAuCl 4 4H 2 O was fully dissolved in the mixed solution of oleylamine and tetralin to form precursor solution I; then, the solution was placed in ice-water mixture for 10 min.

[0041] (2) Fully dissolve 0.6 mmol of tert-butylamine borane complex in 1 mL of oleylamine and 1 mL of tetralin mixed solution to form precursor solution II.

[0042] (3) Under ultrasonic conditions, 0.36 mmol of zinc acetate dihydrate was fully dissolved in 2 mL of oleylamine and 4 mL of dodecanol to form precursor solution III.

[0043] (4) Under the condition of magnetic stirring, the precursor solution II solution was quickly injected into the precursor solution I, and the reaction was maintained at 0 °C for 1 h to obtain the colloidal solution IV.

[0044] (5) Add 10 mL of absolute ethanol to the colloidal solution IV; then, obtain...

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Abstract

The invention relates to the preparation field of semiconductor / metal composite nanomaterials, discloses a preparation method of colloidal ZnO / Au composite nanomaterials, and the synthesis process ofthe ZnO / Au composite nanomaterials is a typical process of seed modulation growth. Firstly, monodisperse Au nanoparticles are prepared by bottom-up colloidal synthesis. Secondly, monodisperse Au nanoparticles are added to the mixed solution of zinc acetate, oleamine and dodecanol as seed crystals. The mixed solution is subjected to heat treating to obtain a colloidal solution under magnetic stirring. The obtained product is cleaned with absolute ethanol and redispersed in hexane to obtain monodisperse colloidal ZnO / Au composite nanomaterials. The colloidal ZnO / Au composite nanomaterials prepared by the method have good dispersibility and excellent photocatalytic performance.

Description

technical field [0001] The invention relates to the field of preparation of composite nanomaterials, in particular to a method for preparing colloidal ZnO / Au composite nanomaterials. Background technique [0002] In the 21st century, with the rapid development of nanoscience and technology, new composite multifunctional nanomaterials have begun to receive widespread attention. By controlling the size, composition, morphology, and surface structure of materials, people can not only tailor the energy band structure of materials, but also change the optical properties, magnetic properties, and carrier transport characteristics of materials. Metal contacts are integrated on semiconductor devices using a top-down fabrication approach, in which the interface area is much smaller relative to the overall system and each component typically retains its original properties. However, semiconductor crystals and metal nanoparticles are assembled into unified nanosystems using bottom-up ...

Claims

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Application Information

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IPC IPC(8): B01J23/66B82Y30/00B82Y40/00
CPCB01J23/66B82Y30/00B82Y40/00B01J35/23B01J35/39
Inventor 范宝路昝程少范明辉李林凯尚义
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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