A preparation method of titanium-based tin dioxide coated electrode modified with rare earth europium
A coating electrode and tin dioxide technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of backward electrocatalysis efficiency, easy pollution, anode loss, etc., to increase the active surface area, increase the binding force, and prolong the service life The effect of longevity
Active Publication Date: 2017-07-28
KESHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
On the one hand, metal electrodes are prone to dissolution during the electrochemical oxidation process, resulting in anode loss and introducing new impurities into the solution.
Even insoluble inert electrodes (platinum electrodes) still have problems such as easy contamination and electrode deactivation; on the other hand, the corrosion resistance of carbon electrodes is traditionally considered to be better than that of metal electrodes, but its electrocatalytic efficiency is far from that of metal electrodes. behind metal electrodes
Method used
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[0031] (1), adopt sol-gel method to prepare the tin dioxide particle of nano scale:
[0032] 0.004mol crystalline tin tetrachloride (SnCl 4 ·5H 2 (0), 0.002mol surfactant sodium dodecyl sulfate (SDS) particles were added to 100 milliliters of deionized water, a small amount of concentrated ammonia was added dropwise under constant stirring, and the pH value was adjusted to 11 to obtain a clear and transparent solution. The solution was heated in a water bath at 90°C for 6 hours, and the system gradually changed from clear to cloudy. The translucent suspension was separated by a centrifuge (10000r / m, 5min) to obtain a transparent precipitate. After the precipitate was washed three times with deionized water and absolute ethanol, it was placed in a drying oven (80° C.) to obtain tin dioxide nanoparticles with a tetragonal rutile structure with an average size of 3.6 nm.
[0033] (2) Preparation of rare earth europium-modified titanium-based nano-tin dioxide coated electrode b...
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Abstract
The invention proposes a method for preparing an electrochemical anode with rare earth europium modified titanium-based nano tin dioxide coating in the field of electrochemical water treatment. On the one hand, by introducing tin dioxide nanoparticles, the active surface area of the coated electrode is increased, and the electrocatalytic activity of the anode is improved; on the other hand, the traditional titanium-based tin dioxide coating is improved through the excellent physical and chemical properties of trivalent rare earth ions Electrode, reduce interface resistance, improve anode conductivity; improve the oxygen evolution potential of traditional titanium-based tin dioxide coated electrodes, and improve the anodic oxidation degradation efficiency of organic matter. Compared with electrochemical anode materials such as traditional metal electrodes and carbon electrodes, it has good corrosion resistance and high oxygen evolution potential. At the same time, it provides a new idea for the preparation of titanium-based nano-tin dioxide coated electrodes modified by other rare earth ions.
Description
[0001] 1. Name of the invention: [0002] A preparation method of titanium-based nano-tin dioxide coating electrode modified by rare earth europium [0003] 2. Technical field: [0004] As we all know, the use of electrochemical oxidation technology to treat difficult-to-degrade organic waste water has very important research significance. Since the birth of electrochemical water treatment technology, anode materials with excellent electrochemical catalytic efficiency have always been the central issue of concern in the scientific and industrial circles. Titanium-based tin dioxide coated electrodes are currently the most widely used metal oxide electrodes. Compared with traditional metal electrodes, carbon electrodes and other electrochemical anode materials, they have good corrosion resistance and high oxygen evolution potential. The invention proposes a method for preparing an electrochemical anode with rare earth europium modified titanium-based nano tin dioxide coating in ...
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IPC IPC(8): C25B11/06C25B11/10
Inventor 徐骏张晓伟曹惠忠
Owner KESHENG ENVIRONMENTAL PROTECTION TECH CO LTD