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Porous polypyrrole nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polypyrrole nano-film

A technology of nano-zero-valent iron and pyrrole nano-technology, which is applied in the fields of application, chemical instruments and methods, organic fertilizers, etc., and can solve problems such as easy agglomeration, easy oxidation, and poor monodispersity

Pending Publication Date: 2021-05-14
SUZHOU ZHONGKE ADVANCED TECH RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned defects of the prior art, to provide a porous polypyrrole nano-film loaded with nano-zero-valent iron and its preparation method and application, so as to solve the problem of poor monodispersity, easy agglomeration and easy oxidation problem

Method used

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  • Porous polypyrrole nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polypyrrole nano-film
  • Porous polypyrrole nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polypyrrole nano-film
  • Porous polypyrrole nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polypyrrole nano-film

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preparation example Construction

[0032] The invention provides a preparation method of a porous polypyrrole nano-film loaded with nanometer zero-valent iron, comprising the following steps:

[0033] (1) Preparation of porous polypyrrole nano-films by combining electrochemical polymerization and chemical oxidation;

[0034] (2) The porous polypyrrole nano-film loaded with nano-zero-valent iron was prepared by liquid phase reduction method.

[0035] In the present invention, by loading nano-zero-valent iron on the porous polypyrrole nano-film, on the one hand, it can greatly limit the loss of nano-zero-valent iron. The degree of "oxidation" maintains the high reactivity of nano-zero-valent iron, prevents it from being oxidized by non-target pollutants in the environment such as water, and prolongs its service life. At the same time, the loading of the porous polymer nano-film can effectively prevent its agglomeration, improve the dispersion, mechanical strength and adsorption effect of nano-zero-valent iron pa...

Embodiment 1

[0048] The preparation process of the porous polypyrrole nanofilm loaded with nano zero-valent iron is as follows:

[0049] (1) Preparation of porous polypyrrole nanofilms by combining electrochemical polymerization and chemical oxidation

[0050] Polypyrrole film was prepared by cyclic voltammetry electropolymerization on CHI-660 electrochemical workstation, during which V 2 o 5 as an oxidizing agent. Under the three-electrode system, a platinum plate electrode is used as an auxiliary electrode, a saturated calomel electrode is used as a reference electrode, and the electrolyte is a mixed solution of pyrrole and dilute sulfuric acid (concentration: 0.2 mol / L). The electrochemical polymerization conditions are: the polymerization voltage is 0.4V, the scanning rate is 2mV / s, and the scanning period is 15 circles. Add 0.1g V 2 o 5 After the polymerization, take out the working electrode, wash it with dilute hydrochloric acid, ethanol and distilled water in turn, gently remo...

Embodiment 2

[0055] The preparation process of the porous polypyrrole nanofilm loaded with nano zero-valent iron is as follows:

[0056] (1) Preparation of porous polypyrrole nanofilms by combining electrochemical polymerization and chemical oxidation

[0057] Polypyrrole film was prepared by cyclic voltammetry electropolymerization on CHI-660 electrochemical workstation, during which V 2 o 5 as an oxidizing agent. Under the three-electrode system, a platinum sheet electrode is used as an auxiliary electrode, a saturated calomel electrode is used as a reference electrode, and the electrolyte is a mixed solution of pyrrole and dilute sulfuric acid (concentration: 0.6 mol / L). Electrochemical polymerization conditions are: polymerization voltage is 1.2V, scanning rate is 5mV / s, and scanning period is 25 circles. The polymerization conditions are: add 7mL pyrrole monomer to 400mL dilute sulfuric acid (concentration: 0.6mol / L), and then add 0.8g V 2 o 5 After the polymerization, take out t...

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Abstract

The invention provides a preparation method of a porous polypyrrole nano film loaded with nano zero-valent iron, and belongs to the technical field of soil remediation agents. The preparation method comprises the following steps: (1) preparing a porous polypyrrole nano film by combining electrochemical polymerization and chemical oxidation; and (2) preparing the porous polypyrrole nano film loaded with the nano zero-valent iron by adopting liquid phase reduction. The invention also provides the porous polypyrrole nano-film loaded with the nano zero-valent iron prepared by the method, and application of the porous polypyrrole nano-film as a heavy metal contaminated soil remediation agent. The porous polypyrrole nano-film loaded with the nano zero-valent iron solves the problems that the nano zero-valent iron is poor in monodispersity, easy to agglomerate and easy to oxidize when being used as a soil remediation agent, and has relatively good removal capability on heavy metal ion pollutants in soil.

Description

technical field [0001] The invention belongs to the technical field of soil remediation agents, and in particular relates to a porous polypyrrole nano-film loaded with nano-zero-valent iron, a preparation method and an application. Background technique [0002] In recent years, soil pollution around the world has become increasingly serious. Under the background that soil quality directly affects the safety of food production, soil remediation research that takes the health of the whole society into consideration has received continuous attention. Among many soil pollutants, heavy metal ion pollutants have extremely typical characteristics. It is difficult to be decomposed and metabolized by microorganisms in the soil, and has the characteristics of low mobility and easy accumulation in animals and plants. On the one hand, it affects the growth of a large number of plants, especially the normal growth of crops. On the one hand, it will be enriched in animals and plants, an...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/04C08K3/08C08G73/06C09K17/40
CPCC08J5/18C08G73/0611C09K17/40C08J2379/04C08K2003/0856C08K2201/011
Inventor 陈勇曹楠李涛
Owner SUZHOU ZHONGKE ADVANCED TECH RES INST CO LTD
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