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Preparation method of graphite felt loaded metal organic framework compound cathode material and application thereof

A metal-organic framework and metal-loaded technology, which is applied in the direction of iron-organic compounds, chemical instruments and methods, and water treatment of special compounds, can solve the problems of narrow pH range, inability to reduce the amount of addition, slow degradation speed, etc., and achieve wide pH Scope of application, excellent chemical stability, effect of increasing yield

Active Publication Date: 2020-07-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heterogeneous Fenton method in the prior art generally uses graphite felt as the cathode material, which cannot reduce the H in the Fenton reagent. 2 o 2 The amount of addition, and will produce a large amount of iron-based sludge, and the degradation rate is slow, and the applicable pH range is narrow

Method used

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  • Preparation method of graphite felt loaded metal organic framework compound cathode material and application thereof
  • Preparation method of graphite felt loaded metal organic framework compound cathode material and application thereof
  • Preparation method of graphite felt loaded metal organic framework compound cathode material and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method of ink felt-supported metal organic framework compound cathode material provided in this example: 179mg FeCl 3 ·6H 2 O and 160mg of Pluronic F127 were dissolved in 15mL of deionized water, mixed and stirred for 1h to obtain a mixed solution. Add 0.3mL CH to the mixed solution 3 COOH and 60 mg of 2-aminoterephthalic acid were stirred for 4 hours to form a metal organic framework compound precursor solution. Cut commercial graphite felt with a thickness of 0.5 cm into a size of 3 cm × 2 cm, immerse in acetone and ultrasonically clean for 0.5 h to remove oil, and then rinse with ultrapure water to obtain a clean graphite felt GF. The metal-organic framework compound precursor solution and the graphite felt GF were placed in the reactor together, sealed and subjected to hydrothermal reaction at 110°C for 24h. After the reaction, the reactor was naturally cooled to room temperature, and the product was washed in ultrapure water at room temperature for...

Embodiment 2

[0033] A kind of preparation method of ink felt supported metal organic framework compound cathode material provided in this embodiment: 179mg Fe(NO 3 ) 3 9H 2 O and 160mg of Pluronic F127 were dissolved in 15mL of deionized water, mixed and stirred for 1.5h to obtain a mixed solution. Add 0.15mL formic acid and 60mg 2-aminoterephthalic acid into the mixed solution, stir for 2h, and configure the precursor solution of the metal organic framework compound. A commercial graphite felt with a thickness of 0.5 cm was cut into a size of 3 cm × 2 cm, immersed in acetone for 0.75 h to remove oil, and then rinsed with ultrapure water to obtain a clean graphite felt GF. The metal-organic framework compound precursor solution and the graphite felt GF were placed in the reactor together, sealed and subjected to hydrothermal reaction at 100°C for 36h. After the reaction, the reactor was naturally cooled to room temperature, and the product was washed in ultrapure water at room temperatu...

Embodiment 3

[0035] A method for preparing an ink felt-supported metal-organic framework compound cathode material provided in this example: 179mg Fe 2 (SO4) 3 9H 2 O and 320mg of Pluronic F127 were dissolved in 15mL of deionized water, mixed and stirred for 2h to obtain a mixed solution. Add 0.30 mL of formic acid and 60 mg of 2-aminoterephthalic acid into the mixed solution, stir for 3 hours, and configure the precursor solution of the metal organic framework compound. Cut a commercial graphite felt with a thickness of 0.5 cm into a size of 3 cm × 2 cm, immerse it in acetone and ultrasonically clean it for 1 hour to remove oil, and then rinse it with ultrapure water to obtain a clean graphite felt GF. The metal-organic framework compound precursor solution and the graphite felt GF were placed in the reaction kettle together, sealed and subjected to hydrothermal reaction at 130°C for 48h. After the reaction, the reactor was naturally cooled to room temperature, and the product was wash...

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Abstract

The invention discloses a preparation method of a graphite felt loaded metal organic framework compound cathode material and an application thereof. The method comprises the following steps: employingferric salt, Pluronic F127, weak acid, 2-aminoterephthalic acid and a carbon felt, adding ferric salt and Pluronic F127 into deionized water; stirring, then adding the weak acid and the 2-aminoterephthalic acid according to the molar ratio, stirring to obtain a metal organic framework compound precursor solution, putting the metal organic framework compound precursor solution and the pretreated carbon felt into a reaction kettle together, sealing, then carrying out a hydrothermal reaction, washing and carrying out vacuum drying to obtain the cathode material. The cathode material has a porousstructure and a large specific surface area, and the yield of H2O2 is remarkably increased when the cathode material is applied to an electro-Fenton system. The oxygen is not required to be filled, aeration is performed or a Fenton reaction reagent is not required to be added in the reaction process, so that the method has a relatively wide pH application range and relatively high acid stability,and almost no iron-based sludge is generated.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a preparation method and application of graphite felt-supported metal organic framework compound cathode materials. Background technique [0002] Advanced oxidation technology has attracted widespread attention due to its high efficiency in the degradation of toxic and / or persistent organic pollutants in water. The Fenton process is the most widely used advanced oxidation technique. However, the traditional Fenton method needs to add a large amount of Fenton reagent H 2 o 2 and Fe 2+ , the applicable range of pH is narrow, and a large amount of iron-containing sludge is produced. Electro-Fenton method is a new and clean electrochemical advanced oxidation technology. Compared with the conventional Fenton method, the electro-Fenton method produces H through the two-electron reduction of dissolved oxygen in water at the cathode 2 o 2 , avoiding the H 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2101/30C02F2101/308C01B39/00C02F2001/46142C02F2305/026C01B32/21C07F15/02
Inventor 王颖李风亭徐斌成
Owner TONGJI UNIV
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