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Camellia-flower-shaped ZnO/SnO-SnO2 composite material as well as preparation method and application thereof

A technology of composite materials and camellia, which is applied in the direction of analyzing materials, material resistance, and material analysis by electromagnetic means, can solve the problems of low sensitivity and high working temperature of amine sensors, and achieve improved sensitivity and selectivity, high response, and preparation low cost effect

Active Publication Date: 2020-08-25
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a ZnO / SnO-SnO sensor with high sensitivity to amine gases, low power consumption and excellent selectivity for the shortcomings of amine sensors such as low sensitivity and high working temperature. 2 Composite material and its preparation method

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  • Camellia-flower-shaped ZnO/SnO-SnO2 composite material as well as preparation method and application thereof
  • Camellia-flower-shaped ZnO/SnO-SnO2 composite material as well as preparation method and application thereof
  • Camellia-flower-shaped ZnO/SnO-SnO2 composite material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0030] The camellia-shaped ZnO / SnO-SnO of this embodiment 2 The preparation method of the composite material is as follows:

[0031] (1) Weigh 1mmol of hexamethylenetetramine, add 30ml of absolute ethanol and 10ml of deionized water, and ultrasonically dissolve for 10min to form a uniform and stable aqueous solution;

[0032] (2) Weigh 1 mmol of stannous chloride and add it to the aqueous solution and stir for 1 hour, then add 1.5 mmol of urea, and stir again for 1 hour until the solution forms a suspension;

[0033](3) Put the suspension into an autoclave with a polytetrafluoroethylene liner and seal it, react at a constant temperature of 120°C for 12h, and then cool naturally to room temperature. The product was washed three times with distilled water and absolute ethanol, dried at 60°C for 12 hours, and calcined at 400°C for 2 hours in an inert atmosphere to obtain SnO-SnO 2 Hybrid nanomaterials.

[0034] (4) Weigh 1mmol of Sapamine A cationic surfactant, add 30ml of abs...

Embodiment 2

[0038] The camellia-shaped ZnO / SnO-SnO of this embodiment 2 The preparation method of the composite material is as follows:

[0039] (1) Weigh 1mmol of hexamethylenetetramine, add 30ml of absolute ethanol and 10ml of deionized water, and ultrasonically dissolve for 10min to form a uniform and stable aqueous solution;

[0040] (2) Weigh 1 mmol of stannous chloride and add it to the aqueous solution and stir for 1 hour, then add 1 mmol of urea, and stir again for 1 hour until the solution forms a suspension;

[0041] (3) Put the suspension into an autoclave with a polytetrafluoroethylene liner and seal it, react at a constant temperature of 120°C for 12h, and then cool naturally to room temperature. The product was washed three times with distilled water and absolute ethanol, dried at 60°C for 12 hours, and calcined at 400°C for 2 hours in an inert atmosphere to obtain SnO-SnO 2 Hybrid nanomaterials.

[0042] (4) Weigh 1mmol of sodium succinate anionic surfactant (AOT), add 3...

Embodiment 3

[0047] The camellia-shaped ZnO / SnO-SnO of this embodiment 2 The preparation method of the composite material is as follows:

[0048] (1) Weigh 0.6mmol of hexamethylenetetramine, add 30ml of absolute ethanol and 10ml of deionized water, and ultrasonically dissolve for 10min to form a uniform and stable aqueous solution;

[0049] (2) Weigh 1 mmol of stannous chloride and add it to the aqueous solution and stir for 1 hour, then add 1 mmol of urea, and stir again for 1 hour until the solution forms a suspension;

[0050] (3) Put the suspension into an autoclave with a polytetrafluoroethylene liner and seal it, react at a constant temperature of 120°C for 12h, and then cool naturally to room temperature. The product was washed three times with distilled water and absolute ethanol, dried at 60°C for 12h, and calcined at 400°C for 1h in an inert atmosphere to obtain SnO-SnO 2 Hybrid nanomaterials.

[0051] (4) Weigh 1mmol of CTAC cationic surfactant, add 30ml of absolute ethanol a...

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Abstract

The invention discloses a camellia-flower-shaped ZnO / SnO-SnO2 composite material as well as a preparation method and application thereof. The camellia-flower-shaped ZnO / SnO-SnO2 composite material isformed by self-assembly of two-dimensional ZnO sheets, and a SnO-SnO2 mixture is uniformly anchored on the ZnO sheets. The preparation method comprises the following steps: firstly, synthesizing SnO-SnO2 mixed nanoparticles by a hydrothermal method; the preparation method comprises the following steps: firstly, preparing SnO-SnO2 mixed nanoparticles, then, adding the prepared SnO-SnO2 mixed nanoparticles into a reaction system by taking AOT as a soft template through a solvothermal method, and finally, calcining the composite material at 400 DEG C for 2 hours to obtain the camellia-flower-shaped ZnO / SnO-SnO2 composite material. The SnO-SnO2 nanoparticles are compounded on the basis of zinc oxide, so that the sensitivity and selectivity to amine gas are improved, and when the working temperature is 100 DEG C, the SnO-SnO2 nanoparticles have good selectivity to triethylamine, and the sensitivity to 100ppm of triethylamine reaches 780.

Description

technical field [0001] The invention relates to a camellia-shaped ZnO / SnO-SnO 2 Preparation of composite materials and their application in amine sensors. Background technique [0002] Amines are volatile organic compounds, some of which are poisonous and have a foul smell. Such substances are mainly produced in industrial processes such as the manufacture of dyes and dye intermediates, rubber accelerators and antioxidants, photographic imaging agents, pharmaceutical synthesis, perfume production, plastic curing and resin manufacturing, paint construction, and spray painting. The existence of amines in the atmosphere is extremely harmful to the environment and human health. During the death and decay of fish and shells, triethylamine (TEA) gas is released, with concentrations increasing as the freshness of the fish decreases. TEA gas is not only toxic, but also flammable and explosive, seriously endangering human health, such as skin burns, headaches, nausea, etc. It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/127Y02A50/20
Inventor 张永辉王超楠巩飞龙陈俊利孟二超岳丽娟方少明张浩力
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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