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

A nano-zero-valent iron and nano-film technology, which is applied in application, chemical instruments and methods, transportation and packaging, can solve the problems of poor monodispersity, easy agglomeration, and easy oxidation, so as to prevent agglomeration, expand specific surface area, and prevent The effect of oxidation

Pending Publication Date: 2021-05-14
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 purpose of the present invention is to address the above-mentioned defects of the prior art, provide a porous polythiophene 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 polythiophene nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polythiophene nano-film
  • Porous polythiophene nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polythiophene nano-film
  • Porous polythiophene nano-film loaded with nano zero-valent iron as well as preparation method and application of porous polythiophene nano-film

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preparation example Construction

[0033] The invention provides a preparation method of a porous polythiophene nano-film loaded with nano zero-valent iron, comprising the following steps:

[0034] (1) Preparation of porous polythiophene nanofilms by combining electrochemical polymerization and chemical oxidation;

[0035] (2) Porous polythiophene nanofilms loaded with nano-zero-valent iron were prepared by liquid phase reduction method.

[0036] In the present invention, by loading nano-zero-valent iron on the porous polythiophene 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 par...

Embodiment 1

[0049] The preparation process of the porous polythiophene nanofilm loaded with nano zero-valent iron is as follows:

[0050] (1) Preparation of porous polythiophene nanofilms by combining electrochemical polymerization and chemical oxidation

[0051] Polythiophene films were prepared by cyclic voltammetry electropolymerization on a CHI-660 electrochemical workstation, during which MnO was used 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 thiophene and dilute sulfuric acid (concentration: 0.26 mol / L). The electrochemical polymerization conditions are: the polymerization voltage is 0.54V, the scanning rate is 6.5mV / s, and the scanning cycle is 25 cycles. The polymerization conditions are: add 2.5mL thiophene monomer to 400mL dilute sulfuric acid (concentration: 0.26mol / L), Then add 0.08g MnO 2 A...

Embodiment 2

[0056] The preparation process of the porous polythiophene nanofilm loaded with nano zero-valent iron is as follows:

[0057] (1) Preparation of porous polythiophene nanofilms by combining electrochemical polymerization and chemical oxidation

[0058] Polythiophene films were prepared by cyclic voltammetry electropolymerization on a CHI-660 electrochemical workstation, during which MnO was used 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 thiophene and dilute sulfuric acid (concentration: 0.85 mol / L). Electrochemical polymerization conditions are: polymerization voltage is 0.5V, scanning rate is 12mV / s, and scanning cycle is 70 cycles. The polymerization conditions are: add 16mL thiophene monomer to 400mL dilute sulfuric acid (concentration: 0.85mol / L), and then add 1.4g MnO 2 After the polymer...

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Abstract

The invention provides a preparation method of a porous polythiophene 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 polythiophene nano-film by combining electrochemical polymerization and chemical oxidation; and (2) preparing the porous polythiophene nano film loaded with the nano zero-valent iron by adopting liquid phase reduction. The invention also provides the porous polythiophene nano-film loaded with the nano zero-valent iron prepared by the method, and application of the nano-film as a heavy metal contaminated soil remediation agent. The porous polythiophene 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 polythiophene 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): C08J9/40C08J5/18C09K17/40C25B3/05B22F9/24B22F1/00C08L65/00
CPCC08J9/40C08J5/18C09K17/40C25B3/00B22F9/24C08J2365/00B22F1/054
Inventor 陈勇曹楠李涛
Owner SUZHOU ZHONGKE ADVANCED TECH RES INST CO LTD
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