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Preparation method of manganite-loaded ordered mesoporous carbon composite material and application

A technology of manganese oxides and composite materials, applied in chemical instruments and methods, chemical/physical processes, oxidized water/sewage treatment, etc., can solve the problems of non-recyclable, secondary pollution of metal ions, etc.

Inactive Publication Date: 2019-09-27
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Transition metal ions are often used as sulfate activators, although they can decompose persulfate to produce SO 4 - Free radicals, but there are problems such as secondary pollution of metal ions and inability to reuse, so heterogeneous catalysts are more suitable for practical application systems

Method used

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  • Preparation method of manganite-loaded ordered mesoporous carbon composite material and application
  • Preparation method of manganite-loaded ordered mesoporous carbon composite material and application
  • Preparation method of manganite-loaded ordered mesoporous carbon composite material and application

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preparation example Construction

[0029] The invention provides a method for preparing a manganese oxide-loaded ordered mesoporous carbon composite material, comprising: S1) mixing a small molecular carbon source, an acid and a mesoporous material in an alcohol solvent, and heating for polymerization to obtain The first intermediate product; S2) mixing the intermediate product with the manganese source in an alcohol solvent, and after the solvent volatilizes, calcining in a protective atmosphere to obtain the second intermediate product; S3) removing the mesopores in the second intermediate product material, and a manganese oxide-loaded ordered mesoporous carbon composite material is obtained.

[0030] The present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0031] Wherein, the small molecule carbon source is preferably one or more of furfuryl alcohol, sucrose and small molecule resin; the acid is preferably oxalic acid and / or sulfuric acid; th...

Embodiment

[0047] Dissolve 0.135g of oxalic acid in 6mL of ethanol, add 1.2mL of furfuryl alcohol and mix evenly; add the above mixed solution dropwise into 0.8g of SBA-15 silicon template, dropwise for about 10min, and fully mix and stir to obtain a paste solid, and then respectively Polymerize at 80°C for 8h and treat at 140°C for 3h; repeat the above steps to prepare four samples in total. Weigh 0, 42.5, 85, 170mg MnC respectively 15 h 21 o 6 Dissolve in 6ml of ethanol, and add the above-mentioned solid powder drop by drop for about 10min, mix and stir, and treat at 80°C for 4h; calcinate the mixture at 900°C for 2h under nitrogen atmosphere; the obtained powder is in 200mL NaOH solution at 80°C Desiliconization for 2 hours, a total of two times. The final obtained manganese oxide-loaded ordered mesoporous carbon composite according to MnC 15 h 21 o 6 The added amount is marked as OMC, MnOx in descending order (2.7％) @OMC,MnOx (5.2％) @OMC,MnOx (10.1％) @OMC (subscripts indicat...

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Abstract

The invention provides a preparation method of a manganite-loaded ordered mesoporous carbon composite material. The preparation method includes the steps that S1, a micromolecule carbon source, acid and a mesoporous material are mixed in an alcohol solvent and heated for a polymerization reaction, so that a first intermediate product is obtained; S2, the intermediate product and a manganese source are mixed in an alcohol solvent, after the solvent is evaporated, roasting is conducted in protective atmosphere, and finally a second intermediate product is obtained; S3, the mesoporous material in the second intermediate product is removed, so that the manganite-loaded ordered mesoporous carbon composite material is obtained. Compared with the prior art, on one hand, manganite in the composite material is evenly loaded on the surface of mesoporous carbon, in this way, the exposure area of the manganite is increased, then the number of reaction locuses is increased, on the other hand, since ordered mesoporous carbon is used as the substrate of the composite material, mesoporous channels of media are stored, contaminants can be adsorbed, surface concentration can be increased, finally, the purpose of increasing the removal rate of contaminants is realized, and the contaminants can be well gathered and subjected to catalytic degradation.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method and application of a manganese oxide-loaded ordered mesoporous carbon composite material. Background technique [0002] Advanced oxidation technology is a water treatment technology that efficiently removes organic pollutants in water bodies. Most traditional advanced oxidation processes use hydroxyl radicals (OH) to mineralize pollutants, and sulfate radicals (SO 4 - ) as a new type of active oxygen species has higher redox potential and longer relaxation time than OH. In addition, in terms of raw materials, persulfate is cheaper than hydrogen peroxide, has more stable chemical properties, and is easier to store and transport. Therefore, based on SO 4 - ·It has a wider application prospect. [0003] Transition metal ions are often used as sulfate activators, although they can decompose persulfate to produce SO 4 - Free radicals, bu...

Claims

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Application Information

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IPC IPC(8): B01J29/076C02F1/72C02F101/34
CPCB01J29/076C02F1/725C02F2101/345
Inventor 盛国平郭璞璨
Owner UNIV OF SCI & TECH OF CHINA
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