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Preparation method and application of polypyrrole@ZIF-8/graphene nano composite material

A nano-composite material, polypyrrole technology, applied in the direction of analyzing materials, material analysis by electromagnetic means, instruments, etc., can solve problems such as poor conductivity of pure ZIF-8 performance, achieve good anti-interference ability, low detection limit, improve The effect of electrochemical properties

Active Publication Date: 2019-06-14
QUFU NORMAL UNIV
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Problems solved by technology

However, the performance of pure ZIF-8 may be negatively affected by its poor conductivity

Method used

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  • Preparation method and application of polypyrrole@ZIF-8/graphene nano composite material
  • Preparation method and application of polypyrrole@ZIF-8/graphene nano composite material
  • Preparation method and application of polypyrrole@ZIF-8/graphene nano composite material

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Embodiment 1

[0030] (1) Mix 12 mL of graphene oxide (GO) aqueous solution (concentration of 1.8 mg / mL) with 1.2 mL of pyrrole (Py) for 14 minutes to prepare a mixed solution, and then, under rapid stirring, FeCl 3 ·6H 2 An aqueous solution of O (concentration of 4.1 mol / L) was mixed with the above mixture to rapidly form polypyrrole / graphene oxide (PPy / GO) hydrogel, and the PPy / GO was transferred to a 50 mL Teflon-lined autoclave Carry out hydrothermal reaction, the conditions of hydrothermal reaction are: keep at 175°C for 11 hours, cool to room temperature after reaction, remove unreacted monomer and FeCl with ethanol solution3 , and then freeze-dried for 23 hours to obtain a polypyrrole / graphene airgel (PPy / GAs) with a concentration of 3.0 mg / mL;

[0031] (2) Mix 56 mg of PPy / GAs prepared in step (1) with 0.28 g of Zn (NO 3 )·6H 2 O in 18mLCH 3 OH was mixed and sonicated for 55 minutes to obtain a suspension, which was then slowly added to 18 mL of CH containing 1.2 g of 2-methylimid...

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Abstract

The invention belongs to the technical field of nano new materials, and particularly relates to a preparation method and application of a polypyrrole@ZIF-8 / graphene nano composite material. During preparation, PPy is used as a bridge between GAs and ZIF-8 for reinforced bonding, the PPy@ZIF-8 / GAs composite material is successfully synthesized through an in-situ growth method. The catalytic activity of the system exceeds that of a single-component system, and the electrochemical characteristics of the nano material are improved. The PPy@ZIF-8 / GAs nano composite material is successfully synthesized, the prepared composite material is applied to an electrochemical biosensor for rapidly detecting Dcp, the detection stability on the Dcp is good, the anti-interference capability is good, the detection limit is low, and the lower detection limit is 16 pM.

Description

technical field [0001] The invention belongs to the technical field of new nanomaterials, and in particular relates to a preparation method and application of a polypyrrole@ZIF-8 / graphene nanocomposite material. Background technique [0002] Nowadays, the water environment pollution caused by industrial production has become a problem of increasing concern all over the world. Dcp (2,2-methylenebis(4-chlorophenol)), a typical chlorinated phenol, is a common and extremely harmful environmental phenol due to its high toxicity, carcinogenicity and persistence in the environment pollutants. It is widely used in pesticides, preservatives, veterinary drugs, chemical fertilizers and personal care formulations, causing serious health ailments such as itching, weakness, anemia and cancer). In view of this, Dcp analysis is essential to reduce its health risks to aquatic organisms and humans. Chromatography is by far the most commonly used method for Dcp detection. This method is ac...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08L87/00C08K3/04C08G83/00C08G73/06G01N27/327
Inventor 渠凤丽孔维素李钦赵文志牛现康
Owner QUFU NORMAL UNIV
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