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Manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material as well as preparation method and application thereof

A technology of ferric oxide and poly-m-phenylenediamine, which is applied in the direction of alkali metal oxides/hydroxides, chemical instruments and methods, alkali metal compounds, etc., and can solve the problem of adsorption capacity, poor adsorption effect, and inter-polymerization Solve the problems of low synthesis temperature of phenylenediamine, achieve strong affinity and good adsorption effect

Inactive Publication Date: 2020-12-08
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent application 201610065134.0 The manganese dioxide@poly-m-phenylenediamine@ferric oxide core-shell structure composite material synthesized is used for the adsorption of arsenic, but this prior art has the following defects: 1. The amount of potassium permanganate used in the synthesis process Higher, there is a waste of resources; 2. Too low synthesis temperature of poly-m-phenylenediamine will affect the synthesis yield, resulting in poor adsorption effect
3. The pH in the synthesis process of poly-m-phenylenediamine is not regulated, which affects the oxidation process of m-phenylenediamine, resulting in affected adsorption capacity

Method used

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  • Manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material as well as preparation method and application thereof
  • Manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material as well as preparation method and application thereof
  • Manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material as well as preparation method and application thereof

Examples

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preparation example Construction

[0061] The preparation method of the 2nd group embodiment, composite material of the present invention

[0062] This group of embodiments provides the preparation method of the manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material described in any one of the first group of embodiments, which is characterized in that it includes the following steps:

[0063] S1, ultrasonically dispersing ferric oxide into water to obtain a ferric oxide dispersion;

[0064] S2, mixing the m-phenylenediamine and the ferric oxide dispersion liquid, and ultrasonically dispersing to obtain the dispersion liquid of ferric oxide and m-phenylenediamine;

[0065] S3, mixing the dispersion of ferric ferric oxide and m-phenylenediamine obtained in step S2 with an oxidant to carry out oxidative polymerization reaction to obtain poly-m-phenylenediamine@ferric oxide composite material;

[0066] S4. Disperse the poly-m-phenylenediamine@ferroferric oxide composite material obtained in step S...

Embodiment 1

[0077] A manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material, including ferric oxide, manganese dioxide and poly-m-phenylenediamine, wherein poly-m-phenylenediamine is loaded on the surface of ferric oxide, and the two Manganese oxide is supported on the surface of poly-m-phenylenediamine, and is chemically combined with poly-m-phenylenediamine.

[0078] In this example, the load of poly-m-phenylenediamine is 44.6% of the mass of manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material, and the load of manganese dioxide is manganese dioxide@poly-m-phenylene 24.4% of the mass of the amine@Fe3O4 composite.

[0079] In this embodiment, ferroferric oxide is spherical with rough surface; poly-m-phenylenediamine is spherical with smooth surface; the manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material is sea urchin-shaped with rough surface .

[0080] In this example, the composite material of manganese dioxide@poly-m-phe...

Embodiment 2

[0106] 1. The application of a manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material in the treatment of heavy metal wastewater, including the following steps:

[0107] Get the ferroferric oxide, manganese dioxide used in comparative example 1, the poly-m-phenylenediamine@ferric oxide composite material obtained in comparative example 1, the poly-m-phenylenediamine obtained in comparative example 2, Manganese dioxide@poly-m-phenylenediamine@ferric oxide composite material (FM50, FM100, FM150, FM200) with manganese dioxide loads of different specific gravity in Example 1 each 5mg in two parts, respectively added to 20mL, In the heavy metal wastewater with a Pb concentration of 100mg / L, a Cd concentration of 50mg / L, and a pH of 5.3, place it in a constant temperature water bath at 25°C and 170rpm for 24 hours of vibration adsorption to complete the treatment of heavy metal wastewater.

[0108] 2. Get the obtained comparative example FP and comparative example...

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Abstract

The invention discloses a manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide core@shell structure composite material as well as a preparation method and application thereof, and belongs to the field of environment-friendly adsorption materials. The manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material comprises ferroferric oxide, manganese dioxide and poly(m-phenylenediamine), the poly(m-phenylenediamine) is loaded on the surface of the ferroferric oxide, the manganese dioxide is loaded on the surface of the poly(m-phenylenediamine), and finally, a ternary composite material with a double-layer core-shell structure is formed. The mass ratio of the ferroferric oxide in the manganese dioxide@poly(m-phenylenediamine)@ferroferric oxide composite material isnot higher than 40%. The composite material disclosed by the invention can be applied to treatment of heavy metal polluted wastewater, has the advantages of simple process, convenience in operation, low cost, high treatment efficiency, good adsorption effect and the like, and has very high application value and commercial value.

Description

technical field [0001] The invention belongs to the technical field of environmentally friendly adsorption materials, and relates to a manganese dioxide@poly-m-phenylenediamine@ferric oxide shell-core structure composite material and its preparation method and application. Background technique [0002] Water is a key factor for the survival of organisms, and water pollution is an important reason for the decline in public health. For decades, heavy metal pollution control has been a challenging problem in the field of water treatment. Heavy metal pollution is ubiquitous, and heavy metal ions cannot be degraded through natural biological processes, threatening the water environment and biological health. It can enter the aquatic environment through a variety of channels, including electroplating plants, mining industries, electronics manufacturing, inorganic pigment manufacturing, and wastewater discharged from wood processing industries. Heavy metals have strong chemical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28C02F1/28B01J20/30C02F101/20
CPCB01J20/06B01J20/26B01J20/28009B01J20/28011C02F1/281C02F1/285C02F2101/20B01J20/28B01J20/30C02F1/28
Inventor 袁兴中熊婷曹旭洋杨羽茜彭叶琼曾光明
Owner HUNAN UNIV
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