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Iron-manganese double metal oxide modified biochar photo-Fenton composite material and its preparation method

A bimetallic oxide and composite material technology, which is applied in the field of iron-manganese bimetallic oxide modified biochar photo-Fenton composite materials and its preparation, can solve the problem of affecting the reusability of biochar, affecting the catalytic performance and activity of biochar Site reduction and other issues, to achieve the effect of strong magnetism, strong hydrogen peroxide decomposition ability, and improved catalytic performance

Active Publication Date: 2020-08-07
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the persistent free radicals on the surface of biochar cannot be regenerated after reacting with hydrogen peroxide, resulting in the continuous reduction of active sites during the reaction process, which seriously affects the catalytic performance of biochar, and the recovery of powdered biochar in water environment is difficult. The problem that affects the recycling performance of biochar

Method used

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  • Iron-manganese double metal oxide modified biochar photo-Fenton composite material and its preparation method
  • Iron-manganese double metal oxide modified biochar photo-Fenton composite material and its preparation method
  • Iron-manganese double metal oxide modified biochar photo-Fenton composite material and its preparation method

Examples

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Effect test

Embodiment 1

[0036] A biochar light-Fenton composite material modified by iron-manganese double metal oxides, including biochar and iron-manganese double-metal oxides, the iron-manganese double-metal oxides are attached to the biochar, and the iron-manganese double-metal oxides are iron oxides mixture of manganese and manganese oxides, iron oxides including Fe 3 o 4 and Fe 2 o 3 ; The manganese oxide includes Mn 3 o 4 and Mn 2 o 3 .

[0037] In this embodiment, in the iron-manganese double metal oxide-modified biochar photo-Fenton composite material, the mass ratio of biochar to iron-manganese double metal oxide is 50:23.

[0038] A method for preparing the iron-manganese double metal oxide modified biochar photo-Fenton composite material of the above-mentioned present embodiment, comprising the following steps:

[0039] (1) Wash the pine needles, dry them at 105° C., pulverize them with a pulverizer, and pass through a 100-mesh sieve to obtain biomass powder. Dissolve 36.04g of f...

Embodiment 2

[0042] An iron-manganese double-metal oxide modified biochar light-Fenton composite material is basically the same as the iron-manganese double-metal oxide modified biochar light-Fenton composite material in Example 1, the only difference being: the iron in Example 2 The mass ratio of biochar to iron-manganese double metal oxide in the biochar modified by manganese double metal oxide was 25:29.

[0043] A preparation method of the iron-manganese double metal oxide modified biochar-light Fenton composite material of the above-mentioned present embodiment is basically the same as the preparation method of the iron-manganese double-metal oxide modified biochar-light Fenton composite material in Example 1 , the difference is only: the consumption of ferric chloride solution and manganese chloride solution in the step (1) of the preparation method of Example 2 is 30mL.

[0044] The iron-manganese bimetallic oxide modified biochar photo-Fenton composite material (FMBC) prepared in E...

Embodiment 3

[0046] An iron-manganese double-metal oxide modified biochar light-Fenton composite material is basically the same as the iron-manganese double-metal oxide modified biochar light-Fenton composite material in Example 1, the only difference being: the iron in Example 3 The mass ratio of biochar to iron-manganese double metal oxides in the biochar-photo-Fenton composites modified by manganese double metal oxides was 5:7.

[0047] A preparation method of the iron-manganese double metal oxide modified biochar-light Fenton composite material of the above-mentioned present embodiment is basically the same as the preparation method of the iron-manganese double-metal oxide modified biochar-light Fenton composite material in Example 1 , the difference is only: the consumption of ferric chloride solution and manganese chloride solution in the step (1) of the preparation method of Example 3 is 45mL.

[0048] The iron-manganese bimetallic oxide modified biochar photo-Fenton composite mater...

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Abstract

The invention discloses an iron-manganese bimetallic oxide modified biochar optical Fenton composite material and a preparation method thereof. The composite material includes biochar and an iron-manganese bimetallic oxide attached to the biochar, wherein the iron-manganese bimetallic oxide is Metal oxides are mixtures of iron oxides and manganese oxides. The iron oxides include Fe 3 O 4 and Fe 2 O 3 , manganese oxides including Mn 3 O 4 and Mn 2 O 3 . The preparation method includes preparing an iron-manganese bimetallic oxide modified biochar precursor and calcining it. The composite material of the present invention uses biochar as the main material and iron-manganese bimetallic oxide as the modification material. It combines the advantages of the two materials and has excellent catalytic performance, high stability, good recyclability, low cost, and environmental friendliness. It has a good degradation effect on polycyclic aromatic hydrocarbons in water. The preparation method of the present invention has the advantages of mild reaction conditions, simple operating procedures, green and environmental protection, and can be used for large-scale production and preparation.

Description

technical field [0001] The invention belongs to the field of advanced oxidation treatment in polluted environment, and relates to an iron-manganese double-metal oxide modified biochar-light Fenton composite material and a preparation method thereof. Background technique [0002] With the rapid economic growth and the continuous expansion of the scale of industrialization, social ecological environmental problems have become increasingly prominent. Among them, water pollution should not be underestimated. Exploring new technologies for purifying water environment has become an important topic in today's society. In recent years, advanced oxidation technology has attracted widespread attention of researchers because of its efficient degradation of toxic and harmful organic pollutants in water. Advanced oxidation technology can generate hydroxyl radicals through different pathways. Hydroxyl radicals are a kind of free radicals with strong oxidizing properties, which can quick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J37/08C02F1/72
CPCC02F1/722C02F1/725B01J23/8892B01J37/08C02F2305/026B01J35/33B01J35/39
Inventor 李玲赖萃黄芳龙程敏曾光明柳诗语张明明秦蕾刘希贵易欢李必胜符玉葵李敏芳
Owner HUNAN UNIV
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