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Hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method and application

A nano-zero-valent iron and hydrophilic material technology, applied in the field of preparation and modification of nano-materials, can solve the problems of easily deactivated particles, secondary pollution, easy loss, etc. Activity enhancing effect

Active Publication Date: 2021-05-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The functional material prepared by this method can solve the problems that nano-zero-valent iron is easy to agglomerate and deactivate, and the nano-particles are directly applied to polluted water, and the particles are easy to lose and may cause secondary pollution. It can improve the reactivity of nano-zero-valent iron, Degradation performance, providing a new technical method for removing pollution such as heavy metal ions, dyes and antibiotics in water

Method used

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  • Hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method and application
  • Hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method and application
  • Hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Example 1: Boehmite-doped PVDF / PVB blend film-loaded nano-zero-valent iron composite material, polyaniline-wrapped boehmite / Fe 3 o 4 Doped PVDF / PVB blend film loaded nano-zero-valent iron composite material, boehmite / Fe 3 o 4 The preparation method of wrapped carbon nanowire doped PVDF / PVB blend film loaded nano-zero-valent iron composite material and its removal of Cr(Ⅵ) in water, the specific content is as follows:

[0036] 1. Preparation of ordinary unmodified nano-sized zero-valent iron particles and its removal effect on Cr(Ⅵ) in water:

[0037] (1) Measure 100 mL of KBH with a concentration of 1 mol / L in a nitrogen-protected environment 4 The solution was added dropwise with 100 mL of FeSO with a concentration of 1 mol / L 4 In the solution, the process is continuously stirred by a magnetic stirrer until the reaction is completed, and the solution after the reaction is passed through a Buchner funnel with a 0.22 micron microporous filter membrane, rinsed with de...

Embodiment 2

[0053] Example 2: Boehmite-doped PAN / PVB blend film-loaded nano-zero-valent iron composite material, polyaniline-wrapped boehmite / Fe 3 o 4 Doped PAN / PVB blend film loaded nano-zero-valent iron composite material, boehmite / Fe 3 o 4 The preparation method of wrapped carbon nanowire doped PAN / PVB blend film loaded nano-zero-valent iron composite material and its removal of orange yellow II in water, the specific content is as follows:

[0054] 1. Preparation of ordinary unmodified nano-sized zero-valent iron particles and its removal effect on orange II in water:

[0055] (1) Measure 100 mL of KBH with a concentration of 1 mol / L in a nitrogen-protected environment 4 The solution was added dropwise with 100 mL of FeSO with a concentration of 1 mol / L 4 In the solution, the process is continuously stirred by a magnetic stirrer until the reaction is completed, and the solution after the reaction is passed through a Buchner funnel with a 0.22 micron microporous filter membrane, ri...

Embodiment 3

[0070] Example 3: Boehmite-doped PVDF / PVB blend film-loaded nano-zero-valent iron composite material, polyaniline-wrapped boehmite / Fe 3 o 4 Doped PVDF / PVB blend film loaded nano-zero-valent iron composite material, boehmite / Fe 3 o 4 The preparation method of wrapped carbon nanowire doped PVDF / PVB blend film-loaded nano-zero-valent iron composite material and its removal of methyl orange in water, the specific content is as follows:

[0071] 1. Preparation of ordinary unmodified nanometer zero-valent iron particles and its removal effect on methyl orange in water:

[0072] (1) Measure 100 mL of KBH with a concentration of 1 mol / L in a nitrogen-protected environment 4 The solution was added dropwise with 100 mL of FeSO with a concentration of 1 mol / L 4 In the solution, the process is continuously stirred by a magnetic stirrer until the reaction is completed, and the solution after the reaction is passed through a Buchner funnel with a 0.22 micron microporous filter membrane,...

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Abstract

The invention discloses a hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method and application. The method includes: (1) synthesizing the hydrophilic material; (2) during the synthesis process of the blend film, Doping with hydrophilic materials; (3) Soaking the blended membranes doped with hydrophilic materials into a biostimulated polymer solution for functionalization; (4) Immersing the functionalized blended membranes doped with hydrophilic materials in a soluble iron salt solution , so that iron ions are loaded onto the boehmite-doped blend membrane; (5) The blend membrane loaded with iron ions is immersed in borohydride salt solution, and the hydrophilic material doped blend membrane is formed by strong reduction. Nano-zero-valent iron composite material; the method is low in cost and easy to operate, and the prepared nano-zero-valent iron particles have good dispersion performance, high reactivity, easy recovery, good removal ability for heavy metals, organic dyes and antibiotic wastewater, and will not It produces secondary pollution and has broad application prospects in the field of environmental pollution restoration.

Description

technical field [0001] The invention belongs to the preparation and modification technology of nanometer materials, and relates to a hydrophilic material-doped blend film-loaded nano-zero-valent iron composite material and its preparation method, and the composite material is applied to the treatment of heavy metals, dyes, antibiotics, etc. Pollutant wastewater treatment. Background technique [0002] Since the late 1980s, nano-zero-valent iron, as a new type of nano-material, has shown excellent removal and degradation performance in the restoration of contaminated soil and water, and has received extensive attention in the fields of environmental science and engineering. The particle size of nano-zero-valent iron particles is between 1 and 100nm. Due to its small particle size, compared with ordinary nano-iron particles, the unique small size effect makes it have the characteristics of large specific surface area and high reactivity, and thus has superior adsorption and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/70C02F1/28C02F101/20
CPCC02F1/288C02F1/70C02F2101/20C02F2101/308
Inventor 王向宇汪滔
Owner KUNMING UNIV OF SCI & TECH
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