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Method for preparing cobalt phosphide/carbon composite material by using baker's yeast through impregnation process

A carbon composite material, baker's yeast technology, applied in chemical instruments and methods, catalyst activation/preparation, oxidized water/sewage treatment, etc. Solve toxic or harmful, reduce the effect of metal ion leaching

Inactive Publication Date: 2021-06-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the traditional methods for preparing cobalt phosphide mainly include: hydrothermal / solvothermal method, thermal decomposition method, temperature-programmed method, low-temperature phosphating method, etc., which usually require high temperature or relatively complicated operation procedures, and many phosphorus precursors are used at the same time. Toxic or harmful, may cause secondary pollution to the environment and increase the cost of preparation

Method used

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  • Method for preparing cobalt phosphide/carbon composite material by using baker's yeast through impregnation process
  • Method for preparing cobalt phosphide/carbon composite material by using baker's yeast through impregnation process

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Add 2 g of freeze-dried yeast (which has been activated and immobilized) into the mortar, and then add 0.882 mL of Co(NO 3 ) 2 The solution was loaded with cobalt ions, and after careful grinding, the sample was dried in an oven at 60 °C to obtain a solid powder. Transfer the obtained solid powder to a tube furnace, raise the temperature from room temperature to 800, 900 or 1000 °C at a rate of 5 °C / min under the protection of argon, keep it for 4 h, then cool down to room temperature under the protection of argon, The obtained materials are taken out and ground into powder to obtain composite materials, which are respectively named according to the calcination temperature S-800, S-900 and S-1000 .

[0023] In order to verify that the technology proposed in the present invention can successfully prepare cobalt phosphide / carbon composite materials at 800-1000 ° C, the X-ray crystal diffraction analysis of the sample is as follows: figure 1 shown.

Embodiment 2

[0025] Add 2 g of freeze-dried yeast (which has been activated and immobilized) into the mortar, and then add 0.882 mL of Co(NO 3 ) 2 The solution was loaded with metal ions, and after careful grinding, the sample was dried in an oven at 60 °C to obtain a solid powder. The obtained solid powder was transferred to a tube furnace, and the temperature was raised from room temperature to 1000 °C at a rate of 5 °C / min under the protection of argon, kept for 4 h, and then cooled down to room temperature under the protection of argon, and the obtained material was After taking it out, it is ground into powder to obtain a composite material named as S-1000 .

[0026] In order to verify that the cobalt phosphide / carbon composite material prepared by the technology proposed in the present invention can be used for the catalytic degradation of sulfonamide organic pollutants, the experiment and comparison are as follows: prepare 100 mL of sulfanilamide (sulfanilamide, SA ), sulfamethox...

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Abstract

The invention discloses a method for preparing a cobalt phosphide / carbon composite material by using yeast cells through an impregnation process. The method comprises the following steps: with baker's yeast as a raw material, firstly activating the cells, washing the activated yeast with acetone, fixing the activated yeast with glutaraldehyde, then freeze-drying, mixing with a cobalt ion solution, uniformly grinding, and finally, calcining the dried solid powder in a protective atmosphere of 800-1000 DEG C to obtain the cobalt phosphide / carbon composite material. When the material is used as a catalyst, potassium peroxymonosulfate composite salt can be catalyzed to effectively degrade and remove antibiotic pollutants such as sulfanilamide, sulfamethoxazole and sulfathiazole in a water body. Yeast cells are used as a phosphorus source, the problem that a precursor is toxic and harmful in a previous phosphide preparation method is solved, and meanwhile, the preparation method which is mild, simple, convenient and easy to operate is provided. The utilization of phosphorus element in biomass and the optimization of a cobalt phosphide preparation method is realized, and a method is provided for removing organic pollutants in water.

Description

technical field [0001] The invention belongs to the technical field of biomass development and resource utilization, and specifically relates to a method for preparing cobalt phosphide / carbon composite materials by using baker's yeast through an impregnation method. Background technique [0002] Biomass includes all plants, animals, microorganisms and their wastes. It contains not only major elements such as carbon, hydrogen, and oxygen, but also secondary elements such as nitrogen, phosphorus, and sulfur. Phosphorus is a difficult-to-renew resource that is very important to life activities. Therefore, while the world's phosphorus resources are being consumed rapidly with the growth of population and the development of industry and agriculture, researchers have gradually turned their attention to the recovery of phosphorus resources in biomass. and reuse. In recent years, the use of phosphorus in biomass as a precursor for the production of fertilizers, feeds, chemicals, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J37/36B01J37/02B01J37/08C02F1/72C02F101/38
CPCB01J27/1853B01J37/0201B01J37/08B01J37/36C02F1/725C02F2101/38C02F2101/40
Inventor 王雅博张永奎彭媛媛童文华
Owner SICHUAN UNIV
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