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Preparation of high-catalytic activity Ti-based electrodes, Ti/nanoTiO2-RE2O3 and Ti/nanoTiO2-ZrO2

A high catalytic activity, base electrode technology, applied in electrodes, electrolysis processes, electrolysis components, etc.

Inactive Publication Date: 2012-05-30
HUAINAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ti / nanoTiO doped with transition metals and rare earth metals 2 Modified electrodes have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. In an electrolytic cell without a diaphragm, a DC power supply is used to control the current density to 400A / m 2 For electrolysis, the temperature of the electrolytic cell is controlled at 30°C, pure Ti is used as the anode, Ni is used as the cathode, absolute ethanol is used as the electrolyte, acetylacetone is used as a chelating agent, and a small amount of tetrabutylammonium bromide (Bu 4 NBr) as a conductive salt, the addition of tetrabutylammonium bromide is 0.005mol / L, acetylacetone: dehydrated alcohol=1: 20 (volume ratio), and the anode titanium piece is used 6 # After grinding with metallographic sandpaper, degrease with acetone and absolute ethanol in turn; the cathode nickel electrode is polished, degreased, pickled and dried for later use; the ethanol used is absolute ethanol and is treated with 4A molecular sieve to remove trace water process, electrolytic preparation of TiO 2 Precursor - ethyl titanate (Ti(OEt) 4 ), after the electrolytic Ti is compl...

Embodiment 2

[0020] 1. In an electrolytic cell without a diaphragm, a DC power supply is used to control the current density to 400A / m 2 For electrolysis, the temperature of the electrolytic cell is controlled at 30°C, pure Ti is used as the anode, Ni is used as the cathode, absolute ethanol is used as the electrolyte, acetylacetone is used as a chelating agent, and a small amount of tetrabutylammonium bromide (Bu 4 NBr) as a conductive salt, the addition of tetrabutylammonium bromide is 0.005mol / L, acetylacetone: dehydrated alcohol=1: 20 (volume ratio), and the anode titanium piece is used 6 # After grinding with metallographic sandpaper, degrease with acetone and absolute ethanol in turn; the cathode nickel electrode is polished, degreased, pickled and dried for later use; the ethanol used is absolute ethanol and is treated with 4A molecular sieve to remove trace water process, electrolytic preparation of TiO 2 Precursor - ethyl titanate (Ti(OEt) 4 ), after the electrolytic Ti is compl...

Embodiment 3

[0024] 1. In an electrolytic cell without a diaphragm, a DC power supply is used to control the current density to 400A / m 2 For electrolysis, the temperature of the electrolytic cell is controlled at 30°C, pure Ti is used as the anode, Ni is used as the cathode, absolute ethanol is used as the electrolyte, acetylacetone is used as a chelating agent, and a small amount of tetrabutylammonium bromide (Bu 4 NBr) as a conductive salt, the addition of tetrabutylammonium bromide is 0.005mol / L, acetylacetone: dehydrated alcohol=1: 20 (volume ratio), and the anode titanium piece is used 6 # After grinding with metallographic sandpaper, degrease with acetone and absolute ethanol in turn; the cathode nickel electrode is polished, degreased, pickled and dried for later use; the ethanol used is absolute ethanol and is treated with 4A molecular sieve to remove trace water process, electrolytic preparation of TiO 2 Precursor - ethyl titanate (Ti(OEt) 4 ), after the electrolytic Ti is compl...

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PUM

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Abstract

The invention relates to a convenient and fast method for preparation of high-catalytic activity Ti-based electrodes, Ti / nanoTiO2-RE2O3 and Ti / nanoTiO2-ZrO2, and a related key problem in the method is preparation of a modification material having high catalytic activity and stability. According to the invention, the process of sacrificial anodes is adopted, an inert electrode is used as a cathode, metallic Ti is used as a sacrificial anode, and a small amount of tetrabutylammonium bromide (Bu4NBr) is added into anhydrous ethanol as a conductive salt; ethyl titanate (Ti(OEt)4), a precursor of TiO2, is prepared through electrolysis; salt compounds of rare earth metals and zirconium metal are respectively added into ethyl titanate, and ethyl titanate is directly subjected to hydrolysis so as to respectively obtain rare earth metal doped composite nanometer TiO2 sol and zirconium metal doped composite nanometer TiO2 sol; pure titanium metal is used, the rare earth metal doped composite nanometer TiO2 sol and the zirconium metal doped composite nanometer TiO2 sol are respectively coated on Ti substrates having clean surfaces by using the Czochralski method, and electrodes modified by films doped with different metal oxides, i.e., Ti / nanoTiO2-RE2O3 and Ti / nanoTiO2-ZrO2 electrodes, are prepared after calcination.

Description

technical field [0001] The invention relates to a convenient and quick method for preparing Ti-based electrodes with high catalytic activity: Ti / nanoTiO 2 -RE 2 o 3 ;Ti / nanoTiO 2 -ZrO 2 . Background technique [0002] Chemically modified electrodes with excellent electrocatalytic properties are important research topics involving materials science, electrochemistry, biology, physics and other disciplines. One of the key issues involved is to prepare modified materials with high catalytic activity and stability. In recent years, due to the strengthening of environmental protection awareness, green organic electrosynthesis methods have attracted widespread attention from researchers and industries around the world. Countries such as the United States, Britain, and France have already produced 200,000 tons / year of organic electrosynthesis in industrialized production. At present, China has also developed 5,000 tons / year of electrosynthesis industrial production of chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B11/10C25B3/00
Inventor 王凤武方文彦徐迈朱传高
Owner HUAINAN NORMAL UNIV
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