Three-dimensional ordered porous ruthenium dioxide membrane electrode and preparation method thereof

A ruthenium dioxide film, three-dimensional ordered technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. The increase of chemical active area and the low utilization rate of ruthenium dioxide can achieve the effect of increasing electrochemical active sites, increasing specific surface area, and enhancing utilization rate.

Inactive Publication Date: 2019-02-22
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to increase the specific surface area, literature 1 (Zhang Y, Wei K, Han W, et al.Improved electrochemical oxidation of tricyclazole from aqueous solution by enhancing mass transfer in a tubular porous electrode electrocatalytic reactor[J].ElectrochimicaActa,2015,189:1- 8.) Disclosed the preparation of TP-Ti / RuO by brush coating method 2 Tubular membrane electrode, but this method is cumbersome to prepare, the process is complicated, and the micropores exist in the titanium matrix, not the ruthenium dioxide active layer, and the electrochemically active area of ​​the electrode is limited.
In a word, the ruthenium dioxide membrane electrode prepared by the brush coating method in the prior art has low electrocatalytic efficiency, cumbersome preparation, and low utilization rate of ruthenium dioxide

Method used

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  • Three-dimensional ordered porous ruthenium dioxide membrane electrode and preparation method thereof
  • Three-dimensional ordered porous ruthenium dioxide membrane electrode and preparation method thereof
  • Three-dimensional ordered porous ruthenium dioxide membrane electrode and preparation method thereof

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Embodiment 1

[0030] Example 1 is to prepare a ruthenium dioxide film electrode by electrodeposition on the surface of a porous titanium substrate covered with polystyrene microspheres. The present invention refers to this method as a template electrodeposition method. The present invention prepares the concrete method of ruthenium dioxide film electrode by template electrodeposition as follows:

[0031] Step 1: Cut the titanium plate into a size of 1.0cm×3.0cm, polish the titanium substrate with sandpaper until the surface is flat and smooth; ultrasonically clean the surface to remove oil stains; then heat in 0.2mol / L oxalic acid solution for 1 hour to remove the oxide layer on the surface of the substrate; take out the titanium After the plate, deionized water was added for ultrasonication to remove excess oxalic acid attached to the titanium plate.

[0032] Step 2: Dry the treated titanium plate, drop ultrasonically dispersed 2 μm polystyrene microsphere emulsion on the surface of the ti...

Embodiment 2

[0037] Embodiment is the method for preparing ruthenium dioxide film electrode by the method for electrodeposition on common titanium plate, we are called this method electrodeposition method, the concrete method of preparing ruthenium dioxide film electrode by electrodeposition method is as follows:

[0038] Step 1: Cut the titanium plate into a size of 1.0cm×3.0cm, polish the titanium substrate with sandpaper until the surface is flat and smooth; ultrasonically clean the surface to remove oil stains; then heat in 0.2mol / L oxalic acid solution for 1 hour to remove the oxide layer on the surface of the substrate; take out the titanium Add deionized water after the plate for ultrasonication to remove excess oxalic acid attached to the titanium plate.

[0039] Step 2: Dry the treated titanium plate.

[0040] Step 3: Preparation of ruthenium dioxide film electrode by electrodeposition. A titanium plate is used as the cathode, and a titanium plate of the same size is used as the a...

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Abstract

The invention belongs to the technical field of electrocatalytic electrode preparation, and particularly relates to a three-dimensional ordered porous ruthenium dioxide membrane electrode and a preparation method thereof. The membrane electrode comprises a porous titanium matrix and a three-dimensional ordered ruthenium dioxide active surface layer, wherein the three-dimensional ordered rutheniumdioxide active surface layer has a communicated structure formed by three-dimensional ordered spherical piling, and a porous channel for liquid flowing is formed among the piled spheres. According tothe ruthenium dioxide membrane electrode, emulsion containing polystyrene microspheres is dripped to the surface of a titanium plate, hydrate ruthenium dioxide grows in gaps in a template by an electrodeposition method, and the template is removed through high-temperature sintering and is dehydrated to obtain the three-dimensional ordered porous ruthenium dioxide membrane electrode. The electrodecan overcome the defect that a traditional ruthenium dioxide electrode has a compact structure, the utilization rate of ruthenium dioxide is not high and ruthenium dioxide cannot applied to a filter type electrochemical oxidation system, the contact area, mass transfer efficiency and filtration flux can be greatly improved, and meanwhile, the preparation cost and operation energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic electrode preparation, and in particular relates to a three-dimensional ordered porous ruthenium dioxide film electrode and a preparation method thereof. Background technique [0002] Cycloazoles are widely used in the pesticide industry. They have the characteristics of high toxicity and complex water quality. They are refractory wastewater and cannot be efficiently removed by traditional water treatment processes. [0003] Electrochemical oxidation is widely used in the treatment of refractory wastewater because of its strong controllability, rapid response, high efficiency, and no secondary pollution. Electrochemical oxidation is the use of catalytically active electrodes to destroy pollutants through oxidation reactions or anode reaction products to achieve the degradation of pollutants. The nature of the active layer on the electrode surface determines the degree of oxidation of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/16
CPCC02F1/46109C02F1/4672C02F2001/46138C02F2101/16
Inventor 韩卫清范越刘睿谦刘思琪孙秀云李健生沈锦优刘晓东王进军
Owner NANJING UNIV OF SCI & TECH
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