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In2O3/alpha-Fe2O3 nanowire, triethylamine sensor and preparation method of In2O3/alpha-Fe2O3 nanowire

A sensor and nanowire technology, applied in nanotechnology, nanotechnology, nanotechnology for sensing, etc., can solve problems such as limitations and low sensitivity, and achieve improved sensitivity and response speed, small size, and simple device technology. Effect

Active Publication Date: 2021-07-16
JIANGNAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although α-Fe 2 o 3 Research work on gas sensors as sensitive materials has been widely reported, however, most of them are based on α-Fe 2 o 3 The gas sensors have low sensitivity, which greatly limits the α-Fe 2 o 3 Applications of base gas sensors

Method used

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  • In2O3/alpha-Fe2O3 nanowire, triethylamine sensor and preparation method of In2O3/alpha-Fe2O3 nanowire
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  • In2O3/alpha-Fe2O3 nanowire, triethylamine sensor and preparation method of In2O3/alpha-Fe2O3 nanowire

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Embodiment

[0034] Based on 2 o 3 / α-Fe 2 o 3 A triethylamine sensor of nanowires and a preparation method thereof, comprising the following steps,

[0035] A. In 2 o 3 / α-Fe 2 o 3 Preparation method of nanowires:

[0036] a1: According to the mass ratio of 5 / 100 to 8 / 100, weigh ferric nitrate hydrate and N,N-dimethylformamide into a vessel, and then stir until the ferric nitrate is completely dissolved to obtain the first mixed solution;

[0037] a2: Based on the ferric nitrate hydrate in step a1, weigh the indium nitrate hydrate into the first mixed solution according to the molar ratio of 4:1, and stir at room temperature until the indium nitrate is completely dissolved to obtain the second mixed solution. liquid;

[0038] a3: Based on the N,N-dimethylformamide in step a1, according to the mass ratio of 10 / 100 to 20 / 100, weigh polyvinylpyrrolidone into the second mixed solution, and stir at room temperature, Finally obtain a reddish-brown viscous solution, which is recorded a...

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Abstract

The invention belongs to the technical field of gas sensors, and particularly relates to an In2O3 / alpha-Fe2O3 nanowire, a triethylamine sensor and a preparation method thereof. The preparation method of the In2O3 / alpha-Fe2O3 nanowire comprises the following steps of a1, weighing and placing ferric nitrate hydrate and N, N-dimethylformamide in a vessel and stirring and disolving; a2, adding indium nitrate hydrate and stirring; a3, adding and stirring polyvinylpyrrolidone; and a4, carrying out electrostatic spinning on the product obtained in the step a3 to obtain an electrostatic spinning non-woven fabric membrane, and calcining the electrostatic spinning non-woven fabric membrane in a muffle furnace. According to the preparation method, the one-dimensional In2O3 / alpha-Fe2O3 nanowire with the diameter of 50nm-100nm can be prepared, the one-dimensional In2O3 / alpha-Fe2O3 nanowire covers the outer surface of the sensor carrier and is used for testing triethylamine gas, and the prepared sensor is relatively high in sensitivity and relatively high in response speed.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to an In 2 o 3 / α-Fe 2 o 3 Nanowire, triethylamine sensor and preparation method thereof. Background technique [0002] Triethylamine (TEA) is a colorless, transparent organic volatile gas with a strong pungent odor, and is mostly used in industry. However, triethylamine is also a corrosive and toxic substance that can cause damage to the human body, mainly irritating the respiratory tract and burning the skin. Not only that, long-term exposure to triethylamine can cause symptoms such as headaches and shortness of breath. In addition to causing harm to the human body, the rotten process of fish and shellfish is often accompanied by the release of triethylamine. Therefore, the detection of triethylamine can also help to detect whether the content of fish and shellfish and other products is lower than the edible standard . Therefore, the development of a high-performance tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12B82Y15/00B82Y40/00
CPCG01N27/127B82Y15/00B82Y40/00
Inventor 张博包楠王涛倪屹
Owner JIANGNAN UNIV
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