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Portable membrane electrode assembly directly generating ozone in water and preparation method of portable membrane electrode assembly

A portable, membrane electrode technology, used in electrodes, chemical instruments and methods, electrolysis processes, etc.

Inactive Publication Date: 2018-10-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional membrane electrode assembly must face the air to achieve oxygen reduction, so it cannot be completely submerged in water.

Method used

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  • Portable membrane electrode assembly directly generating ozone in water and preparation method of portable membrane electrode assembly
  • Portable membrane electrode assembly directly generating ozone in water and preparation method of portable membrane electrode assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Firstly, the titanium mesh used for the electrode is placed in an oxalic acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0026] 2) Preparation of intermediate layer coating solution:

[0027] According to the atomic ratio of Mn:Sb:Sn=40:20:100, the intermediate layer coating solution is equipped with manganese-containing tin tetrachloride pentahydrate and ethanol of antimony trichloride;

[0028] 3) Preparation of surface active layer coating solution:

[0029] According to the atomic ratio of Ni:Sb:Sn=2:20:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and ethanol of antimony trichloride;

[0030] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 90°C, and then transfer it to a muffle...

Embodiment 2

[0036] 1) First, the titanium plate used for the electrode is placed in a hydrochloric acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0037] 2) Preparation of intermediate layer coating solution:

[0038] According to the atomic ratio of Co:Sb:Sn=10:10:100, the intermediate layer coating solution is equipped with cobalt-containing tin tetrachloride pentahydrate and isopropanol of antimony trichloride;

[0039] 3) Preparation of surface active layer coating solution:

[0040] According to the atomic ratio of Ni:Sb:Sn=8:50:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and isopropanol of antimony trichloride;

[0041] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 70°C, and then transfer it to...

Embodiment 3

[0045] 1) Firstly, the titanium rod used for the electrode is placed in a sulfuric acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0046] 2) Preparation of intermediate layer coating solution:

[0047] According to the atomic ratio of Ru: Sb: Sn = 60: 50: 100, the intermediate layer coating solution is equipped with ruthenium-containing tin tetrachloride pentahydrate and butanol of antimony trichloride;

[0048] 3) Preparation of surface active layer coating solution:

[0049] According to the atomic ratio of Ni:Sb:Sn=5:80:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and butanol of antimony trichloride;

[0050] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 80°C, and then transfer it to a ...

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Abstract

The invention discloses a portable membrane electrode assembly directly generating ozone in water and a preparation method of the portable membrane electrode assembly. An anode is a coating electrode(an active coating is lead dioxide, nickel and antimony doped stannic oxide, boron doped diamond and the like) with a titanium mesh as a substrate, and the coating electrode efficiently electrolyzes water to generate the ozone. A cathode is a titanium mesh, a platinum plated titanium mesh, carbon cloth, carbon felt, a stainless steel wire mesh and the like. An ion exchange membrane is arranged between the cathode and the anode. The cathode, the anode and the ion exchange membrane are subjected to hot pressing on a hot pressing machine, and then the membrane electrode assembly is manufactured.During operation, the membrane electrode assembly is directly put into water, the anode and the cathode are connected with a positive pole and a negative pole of a direct-current main source correspondingly, and the ozone can be directly generated when the membrane electrode assembly is electrified. The technology achieves good application prospects.

Description

technical field [0001] The invention belongs to the field of environmental protection water treatment / fishery, and in particular relates to a portable membrane electrode assembly for directly generating ozone in water and a preparation method thereof. Background technique [0002] Ozone is widely used in wastewater treatment, drinking water disinfection, fish pond disinfection, swimming pool disinfection, chemical synthesis and many other fields. At present, the widely used ozone generation technology is high-voltage discharge ozone generation technology, which is prone to produce harmful nitrogen oxide by-products, has the disadvantages of discharge and air pump noise, and low ozone concentration. In addition, when used in water, it is necessary to pass ozone into the water through pipelines. The pipeline is prone to aging and corrosion. Due to the low concentration of ozone, the concentration of ozone dissolved in water is also low, which affects the efficiency of ozone ut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/13C25B9/10C25B11/10C02F1/78C25B9/23
CPCC25B1/13C02F1/78C02F2303/04C25B9/23C25B11/051
Inventor 王云海卢传旭陈庆云
Owner XI AN JIAOTONG UNIV
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