Copper-iron-carbon aerogel electrode preparation method

A carbon aerogel and electrode technology, applied in the field of water pollution control, can solve the problems of narrow pH range, low current efficiency, low hydrogen peroxide yield, etc. Effect

Active Publication Date: 2017-03-01
TONGJI UNIV
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Problems solved by technology

However, the yield of hydrogen peroxide in the current electro-Fenton system is generally low, and the current efficiency is not high; the reaction needs to be carried out under acidic conditions (pH<3), and the suitable pH range is narrow; due to the introduction of iron ions, the reaction process will The generation of iron sludge requires secondary treatment

Method used

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  • Copper-iron-carbon aerogel electrode preparation method
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  • Copper-iron-carbon aerogel electrode preparation method

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Embodiment 1

[0036] A method for fast and efficient treatment of DMP, using the electro-Fenton system, the copper-iron-carbon aerogel with simple preparation method, high reaction catalytic activity and easy recycling is used as the cathode, and the copper-iron-carbon aerogel The preparation of the electrode specifically includes the following steps:

[0037] (1) Copper-iron-carbon airgel preparation

[0038] Weigh an appropriate amount of resorcinol, formaldehyde, water, and sodium carbonate, and then mix them with resorcinol: formaldehyde: water: sodium carbonate in a molar ratio of 1:2:17.5:0.0008. After forming a uniform solution, pour Iron acetylacetonate and copper acetate monohydrate powder are added to the precursor solution, wherein the mass ratio of the iron in the iron acetylacetonate to the carbon in the precursor solution is 1 to 3:100, and the copper in the copper acetate monohydrate and the precursor The mass ratio of carbon in the solution is 1-3:100, and it is poured into...

Embodiment 2

[0044] CuFe / CA, CuFe / CA-CO in embodiment 1 2 and CuFe / CA-CO 2 -N 2 It is applied to the electro-Fenton system to degrade DMP efficiently and quickly, and it is used as the cathode in the electro-Fenton system, where the anode is a boron-doped diamond (BDD) film electrode, and the copper-iron-carbon gas is fixed with glass glue The area of ​​the gel electrode is about 3cm 2 , using two-electrode DC power supply, with 10 ~ 30mA / cm 2 The constant current density, the voltage of the system is about 4.5V ~ 5.5V. Put 50ml of DMP with a concentration of 50mg / L into 0.05mol / L of Na 2 SO 4 In order to carry out the degradation reaction in the electro-Fenton system to support the electrolyte, the solution in the electro-Fenton system is aerated with oxygen at a rate of 100-150mL / min for 15-20 minutes before the reaction, and the oxygen aeration rate is kept constant during the degradation reaction , take a sample every 15min, and use HPLC to measure the concentration of DMP. The ...

Embodiment 3

[0046] CuFe / CA, CuFe / CA-CO in embodiment 1 2 and CuFe / CA-CO 2 -N 2 It is applied to the electro-Fenton system to degrade the industrial dye methylene blue efficiently and quickly, and it is used as the cathode in the electro-Fenton system, in which the anode is a columnar graphite electrode, and the copper-iron-carbon airgel electrode is fixed with glass glue The area is about 3cm 2 , using two-electrode DC power supply, with 10 ~ 30mA / cm 2 The constant current density, the voltage of the system is about 4.5V ~ 5.5V. Put 50ml of methylene blue with a concentration of 50mg / L into 0.05M Na 2 SO 4 In order to support the degradation reaction in the electro-Fenton system of the electrolyte, the solution in the electro-Fenton system was aerated with oxygen at a rate of 100-150mL / min for 15-20 minutes before the reaction, and the oxygen aeration rate was kept constant during the degradation reaction. Samples were taken every 15 min, and the concentration of methylene blue was ...

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PUM

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Abstract

The present invention relates to a copper-iron-carbon aerogel electrode preparation method. According to the method, resorcinol, formaldehyde, water, sodium carbonate, iron acetylacetonate and copper acetate monohydrate are uniformly mixed in a reaction container according to a certain ratio, a polymerization reaction is performed for a certain time at a certain temperature to prepare a wet gel, the wet gel is dried, programming heating and cooling is performed to prepare the copper-iron-carbon aerogel electrode, and the prepared copper-iron-carbon aerogel electrode is activated sequentially through CO2 and N2 so as to be used as the cathode in the degradation pool to degrade organic pollutants such as dimethyl phthalate and the like. Compared to the method in the prior art, the method of the present invention has advantages of simple preparation process, high activity, low treatment cost for degradation of organic pollutants such as DMP and the like, simple treatment process, flexible degradation, and the like.

Description

technical field [0001] The invention relates to the field of water pollution control, in particular to a method for preparing a copper-iron-carbon airgel electrode. Background technique [0002] Since the 20th century, with the rapid development of the world economy, the rapid growth of population and the development of modern industry, a large amount of domestic sewage and industrial wastewater have been discharged into water bodies, especially refractory, toxic and harmful organic pollutants into the water environment , causing serious water pollution and ecological damage. The water environment problem has become a major issue that human society and economic sustainable development need to face urgently. Some people predicted that after the energy crisis, the biggest crisis that mankind will face is the water resource crisis, and this crisis will be more difficult to solve than the energy crisis. At present, the world is short of water resources, and more than 80 countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467
Inventor 赵红颖钱霖赵国华
Owner TONGJI UNIV
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