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Titanium-base tubular ruthenium dioxide coating membrane electrode and preparation method thereof

A technology of ruthenium dioxide and oxide coating, which is applied in the coating, metal material coating process, liquid chemical plating, etc., can solve the problems of high energy consumption in electrode treatment and poor effect of high-concentration wastewater, and achieve improved Efficiency, increased contact probability, and increased specific surface area

Inactive Publication Date: 2013-11-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example Kontos, A. I. et al. (Self-organized anodic TiO2 nanotube arrays functionalized by iron oxide nanoparticles, Chem. Mater. 2009, 21 (4), 662-672.) described, this type of electrode processing consumes a lot of energy, and for high Concentrated wastewater is not effective

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  • Titanium-base tubular ruthenium dioxide coating membrane electrode and preparation method thereof
  • Titanium-base tubular ruthenium dioxide coating membrane electrode and preparation method thereof
  • Titanium-base tubular ruthenium dioxide coating membrane electrode and preparation method thereof

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Embodiment 1

[0024] The preparation method of titanium-based tubular ruthenium dioxide coating film electrode, it comprises the steps:

[0025] The first step: the preparation of the alkoxide solution of ruthenium metal

[0026] Accurately weigh RuCl 3 ·3H 2 O 20g in a beaker, then add 1L of isopropanol to the beaker, then add 0.5mol of hydrochloric acid, stir until RuCl 3 ·3H 2 O was completely dissolved in isopropanol to prepare a ruthenium metal alkoxide solution.

[0027] Step 2: Preparation of titanium-based tubular ruthenium dioxide-coated membrane electrodes by brush coating and thermal oxidation

[0028] Preparation of titanium-based tubular ruthenium dioxide coating: first, the existing tubular titanium substrate (the tubular titanium substrate is a tubular structure with the substrate closing the top opening, the tube wall is covered with micropores, and the diameter of the micropores is 0.5~ 4 μm) were washed with distilled water and dried in an oven. Then brush the prepar...

Embodiment 2

[0030] The preparation method of titanium-based tubular ruthenium dioxide coating film electrode, it comprises the steps:

[0031] The first step: the preparation of the alkoxide solution of ruthenium metal

[0032] Accurately weigh RuCl 3 ·3H 2 Put 23.4g of O in a beaker, then add 1L of isopropanol to the beaker, add 0.5mol of hydrochloric acid, stir until RuCl 3 ·3H 2 O was completely dissolved in isopropanol to prepare a ruthenium metal alkoxide solution.

[0033] Step 2: Preparation of titanium-based tubular ruthenium dioxide-coated membrane electrodes by brush coating and thermal oxidation

[0034] Preparation of titanium-based tubular ruthenium dioxide coating: first, the existing tubular titanium substrate (the tubular titanium substrate is a tubular structure with the substrate closing the top opening, the tube wall is covered with micropores, and the diameter of the micropores is 0.5~ 4 μm) were washed with distilled water and dried in an oven. Then brush th...

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Abstract

The invention discloses a titanium-base tubular ruthenium dioxide coating membrane electrode and a preparation method thereof. According to the preparation method, a titanium filter pipe is utilized to replace a primary titanium plate to be taken as a matrix, and as numerous holes with the bore diameters of several microns are formed in the surface of the titanium filter pipe, compared with the normal titanium plate, the specific surface area is increased; and a firmly-bonded, uniformly-dispersed, surface-compacted and crack-free ruthenium dioxide thin layer is formed at the surface of the titanium filter pipe by utilizing a thermal oxidation method, and an oxide film can be firmly bonded with the titanium filter pipe after being subjected to the thermal oxidation. The electrode prepared by utilizing the preparation method has the advantages of firm coating structure, good electro-catalytic property and the like; the chlorine evolution potential of the ruthenium dioxide electrode is low, so that the chlorine is beneficially separated out; meanwhile, the operation of the preparation process is easy to control, the cost is low, the device requirements are relatively low, and the prepared electrode has double functions of electrochemical oxidation and membrane separation. Due to a diffusion action, the electrochemical oxidation efficiency can be improved, and meanwhile, the membrane pollution can be reduced due to the electrochemical oxidation, so that pollutants which are difficult to be biologically degraded can be more effectively processed.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic electrode preparation, and in particular relates to a titanium-based tubular ruthenium dioxide coated membrane electrode and a preparation method thereof. [0002] Background technique [0003] Electrochemical oxidation, as a promising treatment technology, has been widely used in the treatment of high-concentration wastewater. Among them, oxide electrodes based on titanium loaded with ruthenium, iridium, lead, etc. have reached the industrial level. In particular, the titanium-based ruthenium oxide electrode was proposed by H. Beer et al. in 1965. After decades of development, it has been widely used in the chlor-alkali industry, the electrowinning of non-ferrous metals, the methanol anode oxidation fuel cell, and the electrolytic production of chromic acid. , Electrolytic smelting of metals, electrolytic production of manganese dioxide particles, etc. [0004] Traditional t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/44C23C18/12
Inventor 韩卫清张永昊衷从强孙云龙王连军孙秀云李健生沈锦优
Owner NANJING UNIV OF SCI & TECH
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