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Hollow and echinoid nanometer material of copper oxide compounded with gold and preparing method thereof

A composite nanomaterial, copper oxide technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, can solve problems such as not being able to meet the application well, and achieve convenient and easy-to-obtain synthesis equipment. The effect of low synthesis temperature and simplified synthesis steps and cycles

Inactive Publication Date: 2013-07-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of various factors such as materials and manufacturing processes, the actual gas sensor often cannot meet the needs of the application well.

Method used

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  • Hollow and echinoid nanometer material of copper oxide compounded with gold and preparing method thereof
  • Hollow and echinoid nanometer material of copper oxide compounded with gold and preparing method thereof
  • Hollow and echinoid nanometer material of copper oxide compounded with gold and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Preparation of Cu with hollow sea urchin shape 2 The steps of O / Au / CuO composite nanomaterials are:

[0080] The first step: copper chloride dihydrate (CuCl 2 2H 2 O) after being dissolved in deionized water and mixed uniformly, the first solution having a copper chloride mass percentage concentration of 1.7g / L is obtained;

[0081] In the present invention, the color is obtained by comparing with GSB05-1426-2001, national standard color card-paint film color standard sample card. The color of the first solution is eggshell green (26G07).

[0082] The second step: Slowly add sodium hydroxide (NaOH) aqueous solution dropwise to the first solution under stirring at a water bath temperature of 55°C; continue stirring for 30 minutes after adding the aqueous sodium hydroxide solution to obtain the second solution;

[0083] The dropping rate is 50 drops / minute;

[0084] The RET basic C IKA heating magnetic stirrer produced by Hangzhou Spectrometer Technology Co., Ltd. wa...

Embodiment 2

[0117] Preparation of Cu with hollow sea urchin shape 2 The steps of O / Au / CuO composite nanomaterials are:

[0118] The first step: copper chloride dihydrate (CuCl 2 2H 2 O) after being dissolved in deionized water and mixed uniformly, the first solution having a copper chloride mass percentage concentration of 1.5g / L is obtained;

[0119] In the present invention, the color of the first solution is eggshell green.

[0120] The second step: slowly add sodium hydroxide (NaOH) aqueous solution dropwise to the first solution under stirring at a water bath temperature of 60°C; after adding the aqueous sodium hydroxide solution dropwise, continue stirring for 10 minutes to obtain the second solution;

[0121] The dropping rate is 60 drops / min;

[0122] Stirring speed is 300 rpm;

[0123] The mass percentage concentration of sodium hydroxide aqueous solution is 80g / L;

[0124] Add 0.088L of sodium hydroxide aqueous solution to 1L of the first solution;

[0125] In the present...

Embodiment 3

[0148] Preparation of Cu with hollow sea urchin shape 2 The steps of O / Au / CuO composite nanomaterials are:

[0149] The first step: copper chloride dihydrate (CuCl 2 2H 2 O) after being dissolved in deionized water and mixed uniformly, the first solution having a copper chloride mass percentage concentration of 2.0 g / L is obtained;

[0150] In the present invention, the color of the first solution is eggshell green.

[0151] The second step: Slowly add sodium hydroxide (NaOH) aqueous solution dropwise to the first solution under stirring at a water bath temperature of 45°C; continue stirring for 25 minutes after adding the aqueous sodium hydroxide solution to obtain the second solution;

[0152] The dropping rate is 80 drops / minute;

[0153] Stirring speed is 400 rpm;

[0154] The mass percentage concentration of sodium hydroxide aqueous solution is 80g / L;

[0155] Add 0.118L of sodium hydroxide aqueous solution to 1L of the first solution;

[0156] In the present inven...

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Abstract

The invention discloses a hollow and echinoid nanometer material of copper oxide compounded with gold and a preparing method of the nanometer material. In a preparation process, copper chloride, sodium hydroxide, ascorbic acid and chloroauric acid which are friendly in environment and can be obtained conveniently and easily are utilized to be raw materials, and an aqueous-phase synthesis preparing method of the nanometer material with a multilevel structure of copper oxide compounded with gold is provided, wherein the preparing method is simple to operate, high in productivity, low in cost, green and environment-friendly. An obtained material is the nanometer material with the multilevel structure of the copper oxide compounded with gold, appearance is hollow and echinoid, and the size is uniform. The material prepared through the preparing method is applied to a gas sensor.

Description

technical field [0001] The invention relates to a preparation method of a nanometer material used as a semiconductor gas sensor, more particularly, a hollow sea urchin-shaped copper oxide and gold composite nanometer material and a preparation method thereof. Background technique [0002] A gas sensor is a sensor that converts the detected gas composition and concentration into an electrical signal. It mainly includes semiconductor gas sensors, contact combustion gas sensors and electrochemical gas sensors, among which semiconductor gas sensors are the most used. This type of sensor can effectively monitor the quality of the air environment and control the emission of various toxic and flammable gases. [0003] In October 2007, Volume 6, Issue 10 published a paper titled "Metal Oxide Gas Sensors" in the Natural Science Edition of "Journal of Guangdong University". A variety of methods for preparing metal oxide semiconductor powders are introduced in this paper. [0004] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/24B82Y40/00B82Y30/00
Inventor 郭林刘倩
Owner BEIHANG UNIV
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