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Carbon-coated manganous-manganic oxide composite material and preparation method and application thereof

A manganese tetroxide composite material and a technology of manganese tetroxide, which are applied in the field of materials, can solve the problems of difficulty in maintaining the chemical state of manganese oxides, low reusability and the like, and achieve good reusability, good use value and application prospects. , the effect of efficient degradation

Active Publication Date: 2021-02-23
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after use, the chemical state of manganese oxide itself is often difficult to maintain, so its recycling performance is often low

Method used

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  • Carbon-coated manganous-manganic oxide composite material and preparation method and application thereof
  • Carbon-coated manganous-manganic oxide composite material and preparation method and application thereof
  • Carbon-coated manganous-manganic oxide composite material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039]A carbon package is wrapped in tetra-manganese composites, with tetrasian mono-manganese as the core, wrapped in a non-formal carbon layer in the surface of the tetrashydoxide.

[0040]In the present embodiment, the carbon dioxide composite material has a graded aperture structure, and the aperture distribution is mainly in the range of 2 nm to 5 nm and 10 nm to 30 nm.

[0041]In the present embodiment, the ferrous dioxide composite material wrapped in the carbon is a nano-cube, a side length of 500 nm to 800 nm.

[0042]In this embodiment, the inner casing is a nanocougroup composed of nano-tetranedoxide particles; the thickness of the amorphous carbon layer is 2 nm to 4 nm.

[0043]A method of preparing a quadroformous mono-manganese composite material wrapped in the above-described example in the present embodiment, with glucose and potassium permanganate as a raw material, two-step synthesis of high temperature calcination after the first hydrothermal synthesis, including the followin...

Embodiment 2

[0047]A method of preparing a carbon wrapped tetrasoxide complex material, which is substantially identical to Example 1, and the difference is only: in Example 2, potassium permanganate (KMNO)4The concentration of 35 mm, that is, the molar ratio of glucose with potassium permanganate is 1: 1.

[0048]The aperture distribution in the carbon dioxide composite material obtained in Example 2 was mainly concentrated in a range of 2 nm to 5 nm and 8 nm to 25 nm, named 1-Mn.3O4 / C-T4.

[0049]The tetrarolate compound (0.5-Mn) wrapped in the carbon encapsulated in this Example 1 (0.5-Mn3O4 / C-T4) Perform a scanning electron microscope (SEM) imaging observation,figure 1 Indicated. byfigure 1 It can be seen that carbon-wrapped tetramented mono-manganese composites (0.5-Mn3O4 / C-t4) Exhibit the nano-cube structure of a rule, a side length of 500 nm to 800 nm, and is assembled from many small particles (tetraned and trifanganganese particles), and the surface has a significant gully aperture structu...

Embodiment 3

[0054]A preparation method of carbon-coated trimanganese tetroxide composite material is basically the same as that of Example 1, except that: in Example 3, the calcination temperature is 800°C.

[0055]The pore size distribution of the carbon-coated trimanganese tetroxide composite material prepared in Example 3 is mainly concentrated in the range of 2nm to 5nm, named 0.5-Mn3O4 / C-T8.

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Abstract

The invention discloses a carbon-coated manganous-manganic oxide composite material and a preparation method and application thereof, the composite material takes manganous-manganic oxide as an innercore, and the surface of the composite material is coated with an amorphous carbon layer. The preparation method comprises the following steps: dissolving potassium permanganate and glucose in a solvent, stirring, carrying out hydrothermal reaction on the obtained mixed solution, centrifuging, washing, filtering, and drying to obtain a carbon-coated manganous-manganic oxide precursor; and calcining, pickling, washing and drying the carbon-coated manganous-manganic oxide precursor to obtain the carbon-coated manganous-manganic oxide composite material. The carbon-coated manganous-manganic oxidecomposite material disclosed by the invention has the advantages of good adsorption performance, high catalytic activity, good stability and the like, can realize efficient degradation of organic pollutants, has good reutilization performance, and has good use value and application prospect. The preparation method disclosed by the invention is simple in overall process flow, low in requirements on equipment and reaction parameters and beneficial to large-scale production.

Description

Technical field[0001]The invention belongs to the technical field of materials and the field of advanced oxidation treatment of organic pollutants, and relates to a carbon-coated trimanganese tetroxide composite material and a preparation method and application thereof, in particular to the preparation of a carbon-coated trimanganese tetroxide composite material Application of manganese tetroxide activated persulfate coated with the carbon in the degradation of organic pollutants in water.Background technique[0002]With the increasingly developed society and economy, the rapid development of industry and agriculture, the discharge of large amounts of industrial and agricultural wastewater, domestic sewage, and the use of pesticides have caused serious pollution and destruction of water resources. The biodiversity of the water environment has been seriously threatened, and productivity has fallen sharply, hindering the sustainable development of society and economy. Organic matter is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J21/18B01J35/10B01J37/10B01J37/08C02F1/28C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J23/34B01J21/18B01J37/10B01J37/086C02F1/288C02F1/725C02F2101/345C02F2101/36C02F2101/38C02F2101/308B01J35/398B01J35/23B01J35/647Y02W10/37
Inventor 汤琳刘雅妮罗俊王佳佳冯程洋
Owner HUNAN UNIV
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