Biological carbon sphere supported FeMoO4 Fenton catalyst, preparation method and application

A technology of ferrous molybdate and biological carbon, which is applied in the field of molybdate, can solve the problems that biological carbon spheres have not yet been seen, the applicable pH range is small, and the cost of wastewater treatment is high, so as to promote effective precipitation, ensure purity, and reduce impurity particles Effect

Inactive Publication Date: 2015-11-18
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional Fenton method has the following defects: when dealing with high-concentration pollutants, H 2 o 2 The dosage is large, and the applicable pH range is small (generally when pH<3), resulting in high cost of wastewater treatment; the conventional Fenton reage

Method used

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  • Biological carbon sphere supported FeMoO4 Fenton catalyst, preparation method and application
  • Biological carbon sphere supported FeMoO4 Fenton catalyst, preparation method and application
  • Biological carbon sphere supported FeMoO4 Fenton catalyst, preparation method and application

Examples

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Effect test

Embodiment 1

[0053] Weigh the yeast powder and add an appropriate amount of deionized water, fully stir with a magnetic stirrer at room temperature for 30 minutes, then centrifuge at 3000r / m for 5 minutes, discard the supernatant, disperse and wash with deionized water again, and then centrifuge, repeat three times , then stir and dissolve the cleaned yeast with absolute ethanol, centrifuge at 3000r / m for 5min, discard the supernatant, disperse and activate with absolute ethanol again, repeat this operation twice; Deionized water, and add ferrous chloride tetrahydrate to the above solution, so that the concentration of ferrous chloride tetrahydrate is 0.03mol / L. Use a magnetic stirrer to fully stir at 40°C for 4 hours; then dissolve sodium molybdate dihydrate with deionized water and slowly add it to the above system, and add an appropriate amount of deionized water again to make the concentration of ferrous ions and molybdate ions in the solution equal to 0.03mol / L, stir the above solutio...

Embodiment 2

[0055] Weigh the yeast powder and add an appropriate amount of deionized water, fully stir with a magnetic stirrer at room temperature for 30 minutes, then centrifuge at 3000r / m for 5 minutes, discard the supernatant, disperse and wash with deionized water again, and then centrifuge, repeat three times , then stir and dissolve the cleaned yeast with absolute ethanol, centrifuge at 3000r / m for 5min, discard the supernatant, disperse and activate with absolute ethanol again, repeat this operation twice; Deionized water, and add ferrous chloride tetrahydrate to the above solution, so that the concentration of ferrous chloride tetrahydrate is 0.04mol / L. Use a magnetic stirrer to fully stir at 40°C for 4 hours; then dissolve sodium molybdate dihydrate with deionized water and slowly add it to the above system, and add an appropriate amount of deionized water again to make the concentration of ferrous ions and molybdate ions in the solution equal to 0.03mol / L, stir the above solutio...

Embodiment 3

[0057] Weigh the yeast powder and add an appropriate amount of deionized water, fully stir with a magnetic stirrer at room temperature for 30 minutes, then centrifuge at 3000r / m for 5 minutes, discard the supernatant, disperse and wash with deionized water again, and then centrifuge, repeat three times , then stir and dissolve the cleaned yeast with absolute ethanol, centrifuge at 3000r / m for 5min, discard the supernatant, disperse and activate with absolute ethanol again, repeat this operation twice; Deionized water, and ferrous chloride tetrahydrate was added to the above solution, so that the concentration of ferrous chloride tetrahydrate was 0.05mol / L. Use a magnetic stirrer to fully stir at 55°C for 3 hours; then dissolve sodium molybdate dihydrate with deionized water and slowly add it to the above system, and add an appropriate amount of deionized water again to make the concentration of ferrous ions and molybdate ions in the solution equal to 0.03mol / L, stir the above ...

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Abstract

The invention discloses a biological carbon sphere supported FeMoO4 Fenton catalyst, a preparation method and an application. The catalyst adopts micro-spheres with a core-shell structure, the core of each micro-sphere is a biological carbon sphere obtained through yeast cell transformation, and the shell of each micro-sphere adopts a FeMoO4 layer. The cheap yeast cells are taken as sources of the biological carbon spheres, tetrahydrate ferrous chloride and dehydrate sodium molybdate are taken as main raw materials, and a biological carbon sphere supported FeMoO4 Fenton catalyst powder material with a core-shell structure is prepared through an environment-friendly reaction and generation environment; the biological carbon sphere supported FeMoO4 Fenton catalyst prepared with the method has excellent catalytic degradation performance in degradation of methylene blue simulative dyeing wastewater.

Description

technical field [0001] The invention relates to the field of molybdates, in particular to biological carbon sphere-supported ferrous molybdate Fenton catalysts, preparation methods and applications. Background technique [0002] Ferrous molybdate (FeMoO 4 ), as an important bimetallic oxide, has excellent catalytic activity and thermoelectric properties, and is widely used in rechargeable battery cathode materials, magnetic materials, catalysts and other fields. At present, the industry has used various preparation methods to obtain ferrous molybdate with different dimensions and sizes. The most representative one is that the project team of Professor Hu Chenguo successively synthesized FeMoO with a diameter of 1 micron by hydrothermal method. 4 A hollow sphere and a one-dimensional monoclinic ferrous molybdate nanorod material with a diameter of 50-150 nm and a length of about 2-3 microns. [0003] The Fenton method is a deep oxidation technology that uses iron ions and H...

Claims

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Application Information

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IPC IPC(8): B01J23/881B01J32/00C02F1/72C02F101/38C02F103/30
Inventor 杨莉苟海刚李旭汪子儒
Owner CHANGAN UNIV
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