Preparation method and application of graphene-calix[4]arene-gold nano-particle ternary nano-composite materials

A nanocomposite material and gold nanoparticle technology, which is applied in the preparation of graphene-calix[4]arene-gold nanoparticle ternary nanocomposite materials and its application field, can solve pollution, expensive instruments, and low sensitivity of spectrophotometry. very high problem

Inactive Publication Date: 2014-01-22
NANTONG VOCATIONAL COLLEGE
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Problems solved by technology

2. The dispersion uniformity of noble metal nanoparticles on the graphene surface is still a serious problem
However, liquid chromatography-mass spectrometry and high-performance liquid chromatography are expensive, and the mobile phase used in detection will bring secondary pollution, and the sensitivity of spectrophotometry is not very high (0.2~0.5mg / kg)

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  • Preparation method and application of graphene-calix[4]arene-gold nano-particle ternary nano-composite materials
  • Preparation method and application of graphene-calix[4]arene-gold nano-particle ternary nano-composite materials
  • Preparation method and application of graphene-calix[4]arene-gold nano-particle ternary nano-composite materials

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Embodiment Construction

[0029] A kind of preparation of graphene-calix [4] arene-gold nanoparticle ternary nanocomposite material, comprises the following steps:

[0030] 1) Preparation of graphene-calix[4]arene nanocomposites

[0031] 10 mg of graphene oxide GO and 10 mg of amphiphilic calix [4] arene T (molecular structure such as figure 1 ) were mixed and dissolved in 10ml of deionized water under ultrasonic conditions, and then stirred at room temperature for 12h, after adding 100μl of hydrazine hydrate and 200μl of ammonia water, a mixed solution was formed, and the mixed solution was reacted at 75°C for 14h under magnetic stirring, and the obtained The black dispersion was centrifuged at 10,000rpm for 20 minutes, and then washed three times with deionized water to obtain graphene-calix[4]arene GN-T nanocomposites, which were vacuum dried at 65°C for 48h to obtain GN -T solid powder, then ultrasonically disperse GN-T in water again to obtain a GN-T dispersion of 1.0 mg / mL for use; it can be see...

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Abstract

The invention discloses a preparation method and application of graphene-calix[4]arene-gold nano-particle ternary nano-composite materials. The preparation method comprises the steps of preparing water-dispersible graphene-calix[4]arene nano-composite materials and graphene-calix[4]arene-gold nano-particle nano-composite materials. The preparation method is simple and quick. Experiments show that a modified electrode of the graphene-calix[4]arene-gold nano-particle ternary nano-composite materials can promote electrochemical reaction of methylene blue in a cooperated mode, electrochemical detection of the methylene blue has wide linear range from 1.0*10<-8> to 2.5*10<-5> mol.L-1, and the low detection limit is 9*10-9 mol.L-1.

Description

technical field [0001] The invention specifically relates to a preparation method of a graphene-calix[4]arene-gold nanoparticle ternary nanocomposite material and its application to the electrochemical detection of methylene blue. Background technique [0002] The arrival of any new generation of macrocyclic hosts with fascinating properties could accelerate the development of supramolecular chemistry and open up a new avenue for materials science. Supramolecular compounds with macrocyclic hosts, such as crown ethers, cyclodextrins, cucurbits, calixarenes, etc., have attracted great attention of researchers due to their wide range of applications. Calixarenes are the third-generation host supramolecular compounds after cyclodextrins and crown ethers. Because they can form host-guest inclusion complexes with various organic, inorganic and biological guest molecules, they have attracted great research interest from scientists. . In particular, based on the powerful recogniti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00G01N27/48B82Y40/00
Inventor 周君戴宝江黄艳芳李侠刘志军
Owner NANTONG VOCATIONAL COLLEGE
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