Rare earth doped Ti-based manganese dioxide electrode and preparation method thereof

A manganese dioxide electrode and rare earth element technology, applied in the field of materials, can solve the problems of unsatisfactory electrode conductivity, stability and catalytic activity, unsatisfactory electrode stability, easy to be polluted, etc., and achieve electrical conductivity and electrocatalysis. High activity, low cost, and the effect of improving catalytic activity

Inactive Publication Date: 2011-10-26
SHANGHAI UNIVERSITY OF ELECTRIC POWER
View PDF1 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The currently used DSA (titanium-based metal oxide electrode) electrodes mainly include ruthenium, iridium, tin, lead, manganese, etc. Ti/RuO 2 Electrodes and Ti/irO 2 The electrode belongs to the noble metal electrode, Ti/SnO 2 Electrode stability is not ideal, Ti/PbO 2 The lead in the electrode may dissolve and cause secondary pollution, BDD (boron-doped diamond electrode) is too expensive and easy to be polluted, etc.; Ti/MnO 2 The electrode ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rare earth doped Ti-based manganese dioxide electrode and preparation method thereof
  • Rare earth doped Ti-based manganese dioxide electrode and preparation method thereof
  • Rare earth doped Ti-based manganese dioxide electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation of 5% cerium-doped titanium-based manganese dioxide electrode comprises the following steps:

[0045] (1), pretreatment of titanium substrate

[0046] That is, use 200#, 600#, 1200#, 1500# metallographic sandpaper to polish the surface of the titanium substrate in sequence until it is smooth and smooth, then use saturated sodium hydroxide solution to boil for 30 minutes for degreasing treatment, and then use 1:1 nitric acid + Soak in sulfuric acid for 2 hours, then acid-etch in 10% oxalic acid solution for about 25 minutes, wait until the reddish-brown substance appears to form a pitted titanium matrix, and finally wash with deionized water and soak in absolute ethanol;

[0047] (2) Preparation of tin antimony oxide intermediate layer

[0048] Take SnCl 4 ·5H 2 O0.85g, SbCl 3 Mix 0.15g, HCl (36%) 1mL, and n-butanol 4ml as a coating solution, brush the coating solution evenly on the surface of the titanium substrate with a brush, sinter at 500°C for 1...

Embodiment 2

[0052] The preparation of 10% cerium-doped titanium-based manganese dioxide electrode comprises the following steps:

[0053](1), pretreatment of titanium substrate (same as Example 1);

[0054] (2), preparation of tin antimony oxide intermediate layer (same as embodiment 1);

[0055] (3) Preparation of rare earth element doped manganese dioxide surface coating

[0056] Using 50wt% Mn (NO 3 ) 2 Solution, according to the molar ratio of manganese and cerium of 25:1, add cerium nitrate, dilute with distilled water to prepare 1mol dm -3 Use a brush to evenly coat the surface layer coating solution on the electrode surface with the prepared intermediate layer, dry it at 90°C for 10 minutes, and then thermally decompose it at 200°C for 5 minutes. This process is repeated 30 times , and finally sintered at 350° C. for 20 minutes to finally obtain the 10% cerium-doped titanium-based manganese dioxide electrode of the present invention, the surface coating thickness of which is ab...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a rare earth cerium doped Ti-based manganese dioxide electrocatalytic electrode and a preparation method thereof. The electrode consists of an internal layer of Ti substrate, an interlayer of tin-antimony oxide and a surface coating of cerium doped manganese dioxide, wherein, the internal layer of Ti substrate is a pure titanium plate, the interlayer of tin-antimony oxide is a mixture consisting of SnO2 and Sb2O5, the molar ratio of tin to antimony is 3.7:1, and in the surface coating, the molar ratio of cerium to manganese dioxide is 1:25-50. The preparation method comprises the following steps: polishing, alkali washing, pickling and acid embossing the pure titanium plate, then repeatedly painting a coating solution, carrying out a thermal decomposition process on the Ti substrate to prepare the interlayer of tin-antimony oxide and the surface coating of cerium doped manganese dioxide in order. The cerium doped Ti-based manganese dioxide electrode disclosed in the invention has low potential of chlorine evolution and high electrocatalysis capability, and can be used for treating the dyeing and finishing effluents.

Description

technical field [0001] The invention belongs to the field of materials and the technical field of wastewater treatment, and in particular relates to a rare earth element cerium-doped titanium-based manganese dioxide electrocatalytic electrode and a preparation method thereof. Background technique [0002] Electrochemical technology has a good application prospect in the field of water treatment because of its unique electrocatalytic function, good treatment effect and good compatibility. In many aspects of electrochemical technology, the development of electrodes is a key. How to develop water treatment electrodes with low cost, low toxicity, environmental friendliness and high electrocatalytic activity is the focus of scientific and technological researchers. [0003] The currently used DSA (titanium-based metal oxide electrode) electrodes mainly include ruthenium, iridium, tin, lead, manganese, etc. Ti / RuO 2 Electrodes and Ti / irO 2 The electrode belongs to the noble meta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F1/461
Inventor 周笑绿谭小文张艳艳李环商菲
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap