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Preparation and application of heteroatom-containing carbon microsphere particle electrode

A technology of granular electrodes and carbon microspheres, which is applied in the direction of water pollutants, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex preparation, lack of interaction, and high cost, and achieve simple preparation methods, High degradation rate and current efficiency, low cost effect

Pending Publication Date: 2022-03-08
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the use of these carbon materials as filled particle electrodes improves the processing effect and current efficiency, the existence of some inherent problems still limits the practical application.
Such as: (1) The carbon materials used (such as activated carbon, carbon nanotubes, etc.) are still complicated to prepare, and are made from chemical reagents produced from petroleum, which is costly
(2) There is a lack of research on the interaction between the surface of carbon materials and the catalyst to improve the activity and stability of the catalyst

Method used

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  • Preparation and application of heteroatom-containing carbon microsphere particle electrode
  • Preparation and application of heteroatom-containing carbon microsphere particle electrode
  • Preparation and application of heteroatom-containing carbon microsphere particle electrode

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preparation example Construction

[0029] Further, the preparation method of the pretreated biomass powder comprises: cutting the dried biomass into 1 cm and pulverizing it with 0.05mol / L H 2 SO 4 Shake for 4 hours to remove impurities, wash with deionized water to remove neutrality, dry at 60°C for 8 hours, and pass through a 200-mesh sieve for later use.

[0030] Further, biomass and H 2 SO 4 The mass ratio of the solution is 1:20-1:30.

[0031] Further, the method for preparing the mixed solution includes: putting phloroglucinol into deionized water and ultrasonicating for 5 minutes, then adding biomass powder for ultrasonication for 1 hour, and magnetically stirring for 12 hours, wherein the mass of phloroglucinol, biomass and deionized water The ratio is 1:5:100~1:15:200.

[0032] Further, the hydrolysis conditions of the single-mode microwave synthesizer are as follows: the heating rate is 40°C / min to 200°C, the pressure is 10atm, the magnetic stirring speed is 1500r / min, and the hydrolysis time is 1-...

Embodiment 1

[0039] 1. Preparation of carbon microsphere electrodes

[0040] (1) Grinding the dried corncobs, using 0.05mol / L H 2 SO 4 Shake for 4 hours to remove impurities, wash with deionized water until neutral, dry at 60°C, pass through a 200-mesh sieve, and set aside.

[0041] (2) Put 0.5g of phloroglucinol and 5g of corncob powder into 50mL of deionized water, mix them evenly by ultrasonication for 1h, put the mixed solution into a single-mode microwave synthesizer for hydrolysis, and raise the temperature to 200°C, pressure 10atm, magnetic stirring speed 1500r / min, hydrolysis reaction 2h. After cooling to room temperature, rinse with deionized water and dry. The obtained solid product was calcined in a tube furnace at 650°C for 2 hours to obtain corn-derived heteroatom-containing (N, O, P) carbon microspheres.

[0042] (3) Preparation of carbon microsphere particle electrode: the prepared heterocarbon microspheres were impregnated into PdNO 3 solution, shake for 4 hours, then f...

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Abstract

The invention belongs to the technical field of electrode material preparation, and particularly discloses preparation and application of a heteroatom-containing carbon microsphere particle electrode, and the preparation method comprises the following steps: dispersing phloroglucinol into deionized water, then adding pretreated biomass powder, fully mixing the pretreated biomass powder with phloroglucinol, then putting the mixed solution into a single-mode microwave synthesizer for hydrolysis, and finally obtaining the heteroatom-containing carbon microsphere particle electrode. The preparation method comprises the following steps: hydrolyzing biomass, collecting a hydrolysis product, calcining and cooling to obtain biomass-derived heteroatom-containing carbon microspheres, dipping the prepared heteroatom-containing carbon microspheres into a noble metal salt MNO3 solution, oscillating, carrying out suction filtration, adding a NaBH4 solution, reacting, washing and drying to obtain the noble metal catalyst-loaded carbon microsphere particle electrode. The invention provides a method for preparing a heteroatom-containing carbon microsphere electrode which is low in price, stable, high in catalytic activity and suitable for water treatment and a method for treating chlorinated organic matters in water. The carbon microsphere composite particle electrode prepared by the method has the advantages of low price, good conductivity, high catalytic activity, low cost and high stability.

Description

technical field [0001] The invention belongs to the technical field of electrode material preparation, and in particular relates to the preparation and application of a heteroatom-containing carbon microsphere particle electrode. Background technique [0002] The filled particle electrode is filled with particles between the cathode and anode of the two-dimensional electrode. After electrification, the particle electrode is polarized into a microelectrode, which increases the contact surface between the solution and the electrode, improves the mass transfer effect, and has a higher current efficiency. It makes up for the shortcomings of slow mass transfer, long processing time and high energy consumption when dealing with low-concentration pollutants. As a multifunctional material, carbon materials have the advantages of high specific surface area, good electrical conductivity, chemical stability, and low density, and are suitable as filled particle electrode materials. Suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/36
CPCC02F1/46109C02F2001/46142C02F2101/36
Inventor 崔春月王淑贤姚梦达辛言君于熙浩
Owner QINGDAO AGRI UNIV
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