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Chemically modified electrode for high-sensitivity nonyl phenol detection and preparation method thereof

A sensitive detection and chemical modification technology, applied in the field of nano-electrochemical sensors, can solve the problems of low sensitivity, expensive instruments, complicated operation, etc., and achieve the effects of good stability, fast analysis speed and small size

Inactive Publication Date: 2017-09-22
XINYANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the methods for detecting nonylphenol mainly include high performance liquid chromatography, high performance liquid chromatography-mass spectrometry, and capillary electrophoresis. The chemical method has the characteristics of fast response, low price, time saving, high sensitivity, good selectivity, good compatibility with modern analytical instruments, and real-time online detection.

Method used

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  • Chemically modified electrode for high-sensitivity nonyl phenol detection and preparation method thereof
  • Chemically modified electrode for high-sensitivity nonyl phenol detection and preparation method thereof
  • Chemically modified electrode for high-sensitivity nonyl phenol detection and preparation method thereof

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention will be further described:

[0031] The modified electrode is highly electrochemically active Ag 2 Se@AuNPs modified ionic liquid carbon paste electrode, its preparation method is as follows:

[0032] Step 1), Ag 2 Preparation of Se@AuNPs nanocomposites:

[0033] First, 0.50g selenium powder and 0.22g AgNO 3 Dissolve in 20mL of water, stir until completely dissolved, then transfer the mixture into a reactor and heat to 150°C for 12 hours, cool the reactor to room temperature, collect the precipitate by centrifugation, wash with water and ethanol five times, and dry at 60°C for 12 hours , that is, Ag 2 Se submicrospheres;

[0034] Take 0.2g of the above-mentioned product in 100mL of ethanol and sonicate for 20min, add 1mL of 3-aminopropyltrimethoxysilane under stirring, reflux at 90°C for 6h, centrifuge the product, wash with alcohol 5 times, and dry at 40°C to obtain aminated Ag 2 Se submicrosph...

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Abstract

The invention relates to the field of nano electrochemical sensors and particularly discloses a chemically modified electrode for high-sensitivity nonyl phenol detection and a preparation method and application thereof. The modified electrode is an Ag2Se@AuNPs modified ionic liquid carbon paste electrode having high electrochemical activity. The modified electrode has high nonyl phenol determining sensitivity and good selectivity, is simple, convenient, cheap, good in stability and suitable for field detection. The modified electrode is the Ag2Se@AuNPs modified ionic liquid carbon paste electrode having the high electrochemical activity. The prepared chemical modified electrode is successively applied to accurate detection of nonyl phenol in an actual sample.

Description

technical field [0001] The invention relates to the field of nano electrochemical sensors, in particular to a chemically modified electrode for highly sensitive detection of nonylphenol in toys and a preparation method thereof. Background technique [0002] As one of the research hotspot materials, silver selenide (Ag 2 Se) is a kind of fast ion conductor, which can be used to prepare optical devices and multifunctional selective electrodes, etc., and can also be applied to fields such as electrochemical sensors. Nano-Au has high electron density, strong catalytic effect, easy preparation, special dielectric properties, and can be combined with a variety of biological macromolecules without affecting biological activity. It is often used in basic research and experiments. [0003] Nonylphenol is an important chemical raw material and intermediate. It belongs to organic pollutants, which can interfere with endocrine and cause the proliferation of breast cancer cells. Nonylph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/416G01N27/48
CPCG01N27/308G01N27/416G01N27/48
Inventor 甘甜孙俊永王志凯李洁彬刘彦明
Owner XINYANG NORMAL UNIVERSITY
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