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Method for preparing cobalt phosphide/biochar composite material by taking yeast nucleic acid as phosphorus source and carbon source

A yeast nucleic acid and composite material technology, applied in chemical instruments and methods, chemical/physical processes, catalyst activation/preparation, etc., can solve the problems of high toxicity, high cost, etc., achieve good adsorption performance, wide application range, and efficient removal Effect

Inactive Publication Date: 2021-06-08
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing cobalt phosphide / biological carbon composite materials using yeast nucleic acid as a phosphorus source and a carbon source. The cobalt phosphide / biological carbon composite material prepared by the technology of the present invention can be used for catalytic activation. A potassium bisulfate compound salt degrades environmental organic pollutants, solves the problems of high toxicity and high cost encountered in the preparation of transition metal phosphides by traditional chemical methods, and at the same time realizes the removal of organic pollutants in water

Method used

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  • Method for preparing cobalt phosphide/biochar composite material by taking yeast nucleic acid as phosphorus source and carbon source
  • Method for preparing cobalt phosphide/biochar composite material by taking yeast nucleic acid as phosphorus source and carbon source
  • Method for preparing cobalt phosphide/biochar composite material by taking yeast nucleic acid as phosphorus source and carbon source

Examples

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Effect test

Embodiment 1

[0025] Evenly disperse the nucleic acid extracted from baker's yeast cells by concentrated salt method in 20-100 mL deionized water, slowly add 0.1-0.2 mol / L cobalt nitrate hexahydrate solution while stirring, and continue stirring for 5-12 h, The resulting complex was centrifuged, washed with water, and dried in a freeze dryer. Mix the dried complex with 1-10 times the mass of sodium chloride and potassium chloride, grind it into powder, transfer it to a corundum crucible, and place it in a tube furnace for calcination under a protective atmosphere at a calcination temperature of 800°C , 900 ℃, 1000 ℃, the calcination time is 3-6 h, the heating rate is 5 ℃ / min, take it out after cooling to room temperature, and obtain the material containing sodium chloride and potassium chloride. The obtained material was dispersed in deionized water and ultrasonically filtered and washed to remove sodium chloride and potassium chloride, dried in an oven at 60 °C, and ground into a fine powd...

Embodiment 2

[0027] Evenly disperse the nucleic acid extracted from baker's yeast cells by concentrated salt method in 20-100 mL deionized water, slowly add 0.1-0.2 mol / L cobalt nitrate hexahydrate solution while stirring, and continue stirring for 5-12 h, The resulting complex was centrifuged, washed with water, and dried in a freeze dryer. Mix the dried complex with 1-10 times the mass of sodium chloride and potassium chloride, grind it into powder, transfer it to a corundum crucible, and place it in a tube furnace for calcination under a protective atmosphere at a calcination temperature of 800°C , 900 ℃, 1000 ℃, the calcination time is 3-6 h, the heating rate is 5 ℃ / min, take it out after cooling to room temperature, and obtain the material containing sodium chloride and potassium chloride. The obtained material was dispersed in deionized water and ultrasonically filtered and washed to remove sodium chloride and potassium chloride, dried in an oven at 60 °C, and ground into a fine powd...

Embodiment 3

[0030] Evenly disperse the nucleic acid extracted from baker's yeast cells by concentrated salt method in 20-100 mL deionized water, slowly add 0.1-0.2 mol / L cobalt nitrate hexahydrate solution while stirring, and continue stirring for 5-12 h, The resulting complex was centrifuged, washed with water, and dried in a freeze dryer. Mix the dried complex with 1-10 times the mass of sodium chloride and potassium chloride, grind it into powder, transfer it to a corundum crucible, and place it in a tube furnace for calcination under a protective atmosphere at a calcination temperature of 900°C , the calcination time is 3-6 h, the heating rate is 5 ℃ / min, it is taken out after cooling to room temperature, and a material containing sodium chloride and potassium chloride is obtained. The resulting material was dispersed in deionized water and ultrasonically filtered and washed to remove sodium chloride and potassium chloride, dried in an oven at 60 °C, and ground into a fine powder to o...

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Abstract

The invention discloses a method for preparing a cobalt phosphide / biochar composite material by taking yeast nucleic acid as a phosphorus source and a carbon source. The method comprises the following steps: with nucleic acid extracted from baker's yeast cells through a concentrated salt method as a raw material, firstly mixing the nucleic acid with a cobalt nitrate solution, centrifuging and washing a generated complex precipitate, adding a sodium chloride-potassium chloride mixed salt accounting for 1-10 times the mass of the complex precipitate, conducting uniform grinding, and carrying out calcining in a protective atmosphere of 500-1000 DEG C to obtain the cobalt phosphide / biochar composite material. The material not only can adsorb bisphenol pollutants in a water body, but also can activate a potassium peroxymonosulfate composite salt to effectively degrade the bisphenol pollutants. According to the invention, phosphorus and carbon resources in biomass are recycled; the invention also provides a preparation method of the transition metal phosphide; and efficient removal of bisphenol pollutants in water is realized.

Description

technical field [0001] The invention belongs to the field of transition metal phosphides and carbon materials, and in particular relates to a method for preparing cobalt phosphide / biological carbon composite materials using yeast nucleic acid as a phosphorus source and a carbon source. Background technique [0002] The advanced oxidation technology (AOPs) based on the activation of potassium monopersulfate (PMS) to generate strong oxidizing free radicals has the advantages of strong oxidation ability, high selectivity, and wide applicable pH range, and is widely used in the treatment of organic matter in environmental wastewater. extensive attention. Transition metal activation, thermal activation, alkali activation, and ultraviolet light activation are all activation methods of PMS, in which transition metal ions are used as homogeneous catalysts to activate PMS without external assistance, high efficiency, and mild reaction conditions, while Co 2+ / PMS is the best match w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J27/185B01J37/03B01J37/08C02F1/28C02F1/72C02F101/30C02F101/34
CPCB01J20/0225B01J20/0259B01J20/20B01J27/1853B01J37/03B01J37/082B01J37/084B01J2220/4806B01J2220/4812C02F1/281C02F1/283C02F1/725C02F2101/30C02F2101/345
Inventor 王雅博张永奎童文华
Owner SICHUAN UNIV
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