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Preparation method of graphene and inorganic polymer composite electrode

An inorganic polymer and composite electrode technology, applied in the field of solid waste resource utilization, can solve the problem of not finding a graphene-fly ash-based inorganic polymer composite electrode preparation method, etc., and achieve the goal of realizing harmless recycling. Effect

Active Publication Date: 2020-04-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] To sum up, the applicant has systematically consulted a large number of domestic and foreign literature and patents, and has not found any preparation methods for graphene-fly ash-based inorganic polymer composite electrodes, and their application in electrocatalytic degradation of organic dyes. any relevant reports

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  • Preparation method of graphene and inorganic polymer composite electrode
  • Preparation method of graphene and inorganic polymer composite electrode
  • Preparation method of graphene and inorganic polymer composite electrode

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preparation example Construction

[0053] Concrete preparation method comprises the following steps:

[0054] (1) take fly ash and graphene by formula quantity, put into beaker after fully mixing;

[0055] (2) take sodium silicate by formula quantity;

[0056] (3) take solid potassium hydroxide by formula quantity;

[0057] (4) take deionized water by formula quantity, sodium silicate and solid potassium hydroxide are dissolved in deionized water;

[0058] (5) Pour the sodium silicate and potassium hydroxide aqueous solution in the step (4) into the beaker containing the fly ash and the graphene blend in the step (1), and stir to form a uniformly mixed slurry;

[0059] (6) The slurry was dip-coated on the surface of the pretreated steel sheet substrate by the pulling method, and the sample was placed in a dry box under sealed conditions at 80°C for 8 hours of curing reaction to prepare a graphene-inorganic polymer composite electrode.

[0060] Raw material source:

[0061] (1) Graphene (Craphene, abbreviate...

Embodiment 1

[0070] Accurately weigh 100g of fly ash, based on this (100%), the dosage of sodium silicate is 37% of the quality of fly ash, the dosage of potassium hydroxide is 11.2% of the quality of fly ash, deionized The consumption of water is 50% of the mass of fly ash.

[0071] Weigh sodium silicate, solid potassium hydroxide and deionized water, dissolve sodium silicate and solid potassium hydroxide in deionized water, add sodium silicate and potassium hydroxide aqueous solution into fly ash, stir evenly, and chemical React to form a uniformly mixed slurry; dip-coat the slurry on the surface of a pretreated 15mm (length) × 15mm (width) × 0.2mm (thick) 304 stainless steel sheet surface by dipping and pulling method (for the treatment process, see figure 1 ), the coating thickness is about 100 μm, and the sample is placed in a thermostat at 80°C for 8 hours under sealed conditions, and then taken out to obtain a graphene-inorganic polymer composite electrode without graphene, which is...

Embodiment 2

[0073] Accurately weigh 100g of fly ash, take this as the basis of measurement (100%), the amount of graphene is 0.01% of the mass of fly ash, mix uniformly in the vibration mill for co-grinding, and the amount of sodium silicate is the mass of fly ash 37%, the dosage of potassium hydroxide is 11.2% of the mass of fly ash, and the amount of deionized water is 50% of the mass of fly ash. Weigh sodium silicate, solid potassium hydroxide and deionized water, dissolve sodium silicate and solid potassium hydroxide in deionized water, add sodium silicate and potassium hydroxide aqueous solution to the co-grinding of fly ash and graphene , uniformly stirred, chemical reaction occurs, and a uniformly mixed slurry is formed; the slurry is dip-coated on a pretreated 15mm (length) × 15mm (width) × 0.2mm (thick) 304 stainless steel sheet by dipping and pulling method Surface (treatment process see figure 1 ), the thickness of the coating is about 100 μm, and the sample is placed in an in...

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Abstract

The invention discloses a preparation method of a graphene and inorganic polymer composite electrode. The method comprises the following steps: mixing and stirring fly ash, graphene, sodium silicate,potassium hydroxide and deionized water into a slurry, uniformly dip-coating the surface of a pretreated steel substrate with the slurry by a dip-coating proess, and carrying out a maintenance reaction process to obtain the graphene and inorganic polymer composite electrode, wherein the dosages of the graphene, the sodium silicate, the potassium hydroxide and the deionized water are respectively 0-1%, 37%, 11.2% and 50% of the mass of the fly ash. The electrocatalytic degradation rate of an indigo dye can reach 100% when the graphene and inorganic polymer composite electrode is used as an anode for electrocatalytic degradation of organic dye wastewater. The method not only realizes harmless utilization of industrial solid waste fly ash, but also provides a new approach for treatment of dyewastewater.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, and relates to the preparation of electrocatalytic electrode materials, in particular to a preparation method of a graphene inorganic polymer composite electrode and its application in the degradation of dye wastewater. Background technique [0002] The electrocatalytic oxidation treatment technology can be applied to the treatment of organic wastewater, and the electrode material is the main carrier of the electrocatalytic oxidation technology, and the degradation of organic matter mainly occurs at the anode, so the preparation of an anode material with good comprehensive performance is the focus of the electrocatalytic oxidation technology [1] . [0003] At present, the anode materials used in electrocatalytic oxidation technology are mainly concentrated in carbon electrodes, metal electrodes, metal oxide coated electrodes and diamond film electrodes. [2] . [0004...

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Application Information

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IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46133C02F2101/308
Inventor 张耀君雷嘉芊贺攀阳孟倩陈浩李婵娟
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY