Preparation method of benzene sensor based on anodic alumina nanowire

An anodized aluminum and benzene sensor technology, applied in the field of sensors, can solve the problems of high cost, long detection period, inability to achieve accurate and rapid detection of trace benzene, etc., and achieves low cost, high accuracy, repeatability and controllability high effect

Inactive Publication Date: 2014-10-08
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a response to solve the defects that the existing methods for detecting benzene have a long detection cycle, high cost and require professionally trained skilled technicians to operate instruments and equipment, and cannot realize accurate and rapid on-site detection of trace amounts of benzene in the environment. Fast, accurate, and reproducible fabrication of an anodized aluminum nanowire-based benzene sensor

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  • Preparation method of benzene sensor based on anodic alumina nanowire
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  • Preparation method of benzene sensor based on anodic alumina nanowire

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Embodiment 1

[0034] A preparation method of a benzene sensor based on anodized aluminum nanowires, the preparation method comprising the following steps:

[0035] a) Pre-treatment: Anneal the high-purity aluminum plate with a purity ≥99.999% at 220°C for 8 hours, wash and degrease after cooling, and then immerse in the soaking solution. The temperature of the soaking solution is 35°C, and the soaking time is 30 minutes; take it out and wash it , after taking it out and cleaning it, perform electrochemical polishing for 5 minutes in a mixed solution of ethanol and perchloric acid with a volume ratio of 2:1 (Ra ≤ 0.01 μm); the solution used for cleaning and degreasing is a mixture of ethanol and cyclohexanol, The volume ratio of ethanol to cyclohexanol is 1:2, and the cleaning solution is ultrasonically vibrated while cleaning; the soaking solution is a mixed solution of sodium bicarbonate with a mass fraction of 10% and potassium hydroxide with a mass fraction of 2%, and sodium bicarbonate a...

Embodiment 2

[0041] A preparation method of a benzene sensor based on anodized aluminum nanowires, the preparation method comprising the following steps:

[0042] a) Pre-treatment: Anneal the high-purity aluminum plate with a purity ≥ 99.999% at 280°C for 7 hours, wash and degrease after cooling, and then immerse in the soaking solution. The temperature of the soaking solution is 45°C and the soaking time is 20 minutes; take it out and wash it , after taking it out and cleaning it, perform electrochemical polishing for 5 minutes in a mixed solution of ethanol and perchloric acid with a volume ratio of 2:1 (Ra ≤ 0.01 μm); the solution used for cleaning and degreasing is a mixture of ethanol and cyclohexanol, The volume ratio of ethanol to cyclohexanol is 1:3, and ultrasonic vibration is used to clean the washing liquid; the soaking liquid is a mixed solution of sodium bicarbonate with a mass fraction of 12% and potassium hydroxide with a mass fraction of 3%, and sodium bicarbonate and The v...

Embodiment 3

[0048] A preparation method of a benzene sensor based on anodized aluminum nanowires, the preparation method comprising the following steps:

[0049] a) Pretreatment: Anneal the high-purity aluminum plate with a purity ≥ 99.999% at 320°C for 6 hours, wash and degrease after cooling, and then immerse in the soaking solution, the temperature of the soaking solution is 50°C, and the soaking time is 10 minutes; take it out and wash it , after taking it out and cleaning it, perform electrochemical polishing for 5 minutes in a mixed solution of ethanol and perchloric acid with a volume ratio of 2:1 (Ra ≤ 0.01 μm); the solution used for cleaning and degreasing is a mixture of ethanol and cyclohexanol, The volume ratio of ethanol to cyclohexanol is 1:4, and the cleaning solution is ultrasonically vibrated while cleaning; the soaking solution is a mixed solution of sodium bicarbonate with a mass fraction of 15% and potassium hydroxide with a mass fraction of 4%, and sodium bicarbonate a...

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Abstract

The invention relates to a preparation method of a benzene sensor based on an anodic alumina nanowire. The benzene sensor electrode is coated with the anodic alumina nanowire. The preparation method includes pretreatment, oxidation, surface modification, and sensor preparation. The sensor provided by the invention has the characteristics of low cost, rapid response, short desorption time, good repeatability and high accuracy. Preparation of the sensor has the advantages of simple process, low material consumption, high process repeatability and controllability, and is convenient for batch production.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a method for preparing a benzene sensor based on anodized aluminum nanowires with fast response, high accuracy and good repeatability. [0002] Background technique [0003] Benzene is a colorless, sweet-smelling transparent liquid at room temperature with a strong aromatic odor. Benzene is flammable, toxic, and a carcinogen. Benzene is a hydrocarbon and the simplest aromatic hydrocarbon. It is hardly soluble in water, easily soluble in organic solvents, and can also be used as an organic solvent itself. Benzene can paralyze the central nervous system and cause acute poisoning. In severe cases, headache, nausea, vomiting, confusion, loss of consciousness, coma, convulsions, etc. will occur, and severe cases will die due to central paralysis. A small amount of benzene can also cause drowsiness, dizziness, rapid heart rate, headache, tremor, confusion, unconsciousness and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 惠国华王敏敏郑海霞
Owner ZHEJIANG GONGSHANG UNIVERSITY
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