A kind of membrane electrode preparation method and its application method

An application method and membrane electrode technology, applied in the direction of material electrochemical variables, material analysis through electromagnetic means, instruments, etc., can solve the problems of lack of acetaminophen, etc., and achieve the effect of low cost, high sensitivity, and simple preparation process

Active Publication Date: 2021-10-15
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a preparation method and application thereof for photoelectrochemical detection of acetaminophen, so as to solve the lack of application of photoelectrochemical detection of acetaminophen in the prior art and the application of electrophoretic deposition of nitrogen-doped graphene quantum dots-bismuth oxybromide nanocomposites onto ITO for the first time

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  • A kind of membrane electrode preparation method and its application method
  • A kind of membrane electrode preparation method and its application method
  • A kind of membrane electrode preparation method and its application method

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Experimental program
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Effect test

Embodiment 1

[0041] The preparation of embodiment 1, F-NGQDs / BiOBr / ITO

[0042]Dissolve 0.21g of citric acid monohydrate and 0.11g of urea in 5ml of deionized water, then transfer the solution to a 20mL Teflon-lined autoclave, and then put the autoclave into a forced air drying oven at 200 °C Heat for 3 hours; cool the autoclave to room temperature naturally, then transfer the resulting solution into a dialysis bag (retained molecular weight: 3000Da) and place it in a 1000mL beaker for dialysis for 72 hours. Replace deionized water once to obtain NGQDs aqueous solution. Then, add 2.24mg of bismuth nitrate pentahydrate to 5mL of ethylene glycol in a beaker, and magnetically stir until dissolved; then add 0.16mg of potassium bromide and 2.24mL of graphene quantum dot aqueous solution to the beaker, and transfer the solution to a 50mL high-pressure In the autoclave, hydrothermal reaction was carried out at 100°C for 6 h, the autoclave was naturally cooled to room temperature, centrifuged, an...

Embodiment 2

[0043] The preparation of embodiment 2, F-NGQDs / BiOBr / ITO

[0044] Dissolve 0.21g of citric acid monohydrate and 0.25g of urea in 5ml of deionized water, then transfer the solution to a 20mL Teflon-lined autoclave, and then put the autoclave into a blast drying oven at 120°C Heating for 5 hours; naturally cooling the autoclave to room temperature, then transferring the obtained solution into a dialysis bag (retained molecular weight: 500Da) and placing it in a 1000mL beaker for dialysis for 24 hours. Replace deionized water once to obtain NGQDs aqueous solution. Then, 2.24mg of bismuth nitrate pentahydrate was added to 15mL of ethylene glycol in a beaker, and magnetically stirred until dissolved; then 0.43mg of potassium bromide and 7.8mL of graphene quantum dot aqueous solution were added to the beaker, and the solution was transferred to a 50mL high-pressure In the autoclave, hydrothermal reaction was carried out at 140 °C for 4 h, the autoclave was naturally cooled to room...

Embodiment 3

[0045] Embodiment 3, the preparation of F-NGQDs / BiOBr / ITO

[0046] Dissolve 0.21g of citric acid monohydrate and 0.18g of urea in 5ml of deionized water, then transfer the solution to a 20mL Teflon-lined autoclave, and then put the autoclave into a forced air drying oven at 160 °C Heat for 4 hours; cool the autoclave to room temperature naturally, then transfer the obtained solution into a dialysis bag (retained molecular weight: 1000Da) and place it in a 1000mL beaker for dialysis for 48 hours. The length of the dialysis bag is 10cm and the volume of deionized water is 900mL. Replace deionized water once to obtain NGQDs aqueous solution. Then, 2.24mg of bismuth nitrate pentahydrate was added to 10mL of ethylene glycol in a beaker, and magnetically stirred until dissolved; then 0.30mg of potassium bromide and 5mL of graphene quantum dot aqueous solution were added to the beaker, and the solution was transferred to a 50mL autoclave , hydrothermally reacted at 120°C for 5h, coo...

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Abstract

The invention discloses a membrane electrode preparation method and an application method thereof. The method comprises the following steps: preparing nitrogen-doped graphene quantum dot-bismuth oxybromide nanocomposites through a two-step hydrothermal method, and then functionalizing nitrogen-doped graphene quantum dot-bromine with hexadecyltrimethylammonium bromide The surface of the bismuth oxide nanocomposite material is positively charged, and then the functionalized nitrogen-doped graphene quantum dot-bismuth oxybromide nanocomposite material is dispersed in acetone to obtain a uniform colloidal solution, and then two pieces of the modified surface are taken. The denatured ITO electrode is put into the functionalized nitrogen-doped graphene quantum dot-bismuth oxybromide colloidal solution for electrophoretic deposition, and the functionalized nitrogen-doped graphene quantum dot-bismuth oxybromide ITO thin film modified electrode is obtained. The electrode provided by the invention can be used for photoelectrochemical quantitative detection of the dosage of acetaminophen, and has the characteristics of fast response time, wide linear range, low detection limit, good stability and the like.

Description

technical field [0001] The invention belongs to the field of photoelectrochemical sensors, in particular to a method for preparing a membrane electrode and an application method thereof. Background technique [0002] Acetaminophen is an important antipyretic and analgesic drug widely used to relieve headache, fever, neuralgia, arthritis and osteoarthritis. However, overdose of acetaminophen is harmful and may trigger asthma in children, acute liver failure and kidney failure, and may even lead to death. Therefore, the development of a simple, rapid, and reliable detection method has potential application value in the quantitative analysis of acetaminophen in medicinal dosage and clinical diagnosis. [0003] So far, many traditional analytical techniques, such as: titration, UV-Vis spectrophotometry, capillary electrophoresis, high performance liquid chromatography and thermogravimetric analysis have been applied to the detection of acetaminophen. However, the above detecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 白雪高凯陈威季业彤刘晓东
Owner HOHAI UNIV
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