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

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

Active Publication Date: 2021-05-18
SUZHOU ZHONGKE ADVANCED TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to aim at the above-mentioned defects of the prior art, provide a kind of porous polycarbazole nano-film loaded with nano-zero-valent iron and its preparation method and application, solve the problem that nano-zero-valent iron has poor monodispersity, easy agglomeration and The problem of easy oxidation

Method used

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

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preparation example Construction

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

[0033] (1) Preparation of porous polycarbazole nanofilms by combining electrochemical polymerization and chemical oxidation;

[0034] (2) The porous polycarbazole 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 polycarbazole nano-film, on the one hand, it can greatly limit the loss of nano-zero-valent iron. The degree of "effective 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-val...

Embodiment 1

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

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

[0050] Polycarbazole film was prepared by cyclic voltammetry electropolymerization on CHI-660 electrochemical workstation, during which MnO 2 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 carbazole and dilute sulfuric acid (concentration: 0.21mol / L). The electrochemical polymerization conditions are: the polymerization voltage is 0.5V, the scanning rate is 8mV / s, and the scanning cycle is 26 cycles. The polymerization conditions are: add 2.4mL carbazole monomer to 400mL dilute sulfuric acid (concentration: 0.21mol / L), Then add 1.2g MnO 2 After the poly...

Embodiment 2

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

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

[0057] Polycarbazole film was prepared by cyclic voltammetry electropolymerization on CHI-660 electrochemical workstation, during which MnO 2 as an oxidizing agent. In the three-electrode system, a platinum sheet electrode was used as an auxiliary electrode, a saturated calomel electrode was used as a reference electrode, and the electrolyte was a mixed solution of carbazole and dilute sulfuric acid (concentration: 0.8 mol / L). The electrochemical polymerization conditions are: the polymerization voltage is 0.5V, the scanning rate is 2.5mV / s, and the scanning cycle is 20 cycles. Then add 1.6g MnO 2 After the polymerization, take out the working electrode, wash it with dilute hydrochloric acid, ethanol and distilled water in turn,...

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Abstract

The invention provides a preparation method of a porous polycarbazole nano-film loaded with nano zero-valent iron, and belongs to the technical field of soil remediation agents, and the preparation method comprises the following steps: (1) preparing a porous polycarbazole nano-film by combining electrochemical polymerization and chemical oxidation methods; and (2) preparing the porous polycarbazole nano film loaded with the nano zero-valent iron by adopting a liquid phase reduction method. The invention also provides the porous polycarbazole nano-film loaded with the nano zero-valent iron prepared by the method, and application of the porous polycarbazole nano-film as a heavy metal contaminated soil remediation agent. The porous polycarbazole 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 polycarbazole nano film loaded with nano zero-valent iron, a preparation method and application thereof. 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 pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J5/18C08G61/12C08L65/00C08K3/08C09K17/40
CPCC08J9/40C08J5/18C08G61/124C09K17/40C08G2261/43C08G2261/1334C08G2261/3241C08J2365/00C08K2003/0856C08K2201/011
Inventor 陈勇曹楠李涛
Owner SUZHOU ZHONGKE ADVANCED TECH RES INST CO LTD
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