Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of titanium-based polyaniline doped lead dioxide composite electrode material

A composite electrode, lead dioxide technology, applied in chemical instruments and methods, water treatment parameter control, water/sludge/sewage treatment, etc. Efficiency and adverse effects of energy consumption, etc., to reduce process complexity, avoid uncertainty, and increase feasibility

Inactive Publication Date: 2019-01-29
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing PTFE-doped modified PbO 2 There are also certain problems in electrode material technology, because PTFE has a high resistivity and a large amount of doping (4.0~6.0g L -1 ), it is bound to PbO 2 The conductivity of the composite electrode, the current efficiency and energy consumption of electro-oxidative degradation of organic wastewater have adverse effects

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
  • A kind of preparation method of titanium-based polyaniline doped lead dioxide composite electrode material
  • A kind of preparation method of titanium-based polyaniline doped lead dioxide composite electrode material
  • A kind of preparation method of titanium-based polyaniline doped lead dioxide composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present embodiment adopts the Ti / PbO prepared by the method of the present invention 2 / PANi-PbO 2 The composite electrode material is the anode, the stainless steel plate with the same area is the cathode, and the distance between the plates is 3cm, and the electrochemical oxidation and degradation treatment of the simulated phenol wastewater is carried out. The volume of the simulated wastewater is 150ml, the initial concentration of phenol is 100mg / L, at 10mA / cm 2 After 180 minutes under the action of electric current, the removal rate of phenol reaches 95.24%, and the removal rate of COD is 55%, which is higher than that of general PbO without polyaniline 2 Electrodes improved by 10%.

Embodiment 2

[0028] In this embodiment, the electrochemical polarization curve test is carried out on the electrode material prepared by the method of the present invention. The test uses a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, at a current density of 1A / cm 2 , the electrolyte is 1M H 2 SO 4 solution, at a temperature of 30 °C, and with general PbO of undoped PANI 2 Electrodes were compared and the results were as follows Figure 5 shown. It can be seen that the oxygen evolution potential of the electrode prepared by the method of the present invention is positively shifted, and the oxygen evolution current is reduced, indicating that polyaniline doping can effectively improve the concentration of PbO. 2 The oxygen evolution overpotential of the electrode can inhibit the occurrence of oxygen evolution side reactions.

Embodiment 3

[0030] In this embodiment, the electrode material prepared by the method of the present invention is the anode, the stainless steel plate is the cathode, and the distance between the plates is 4cm, placed in a plexiglass electrolytic cell, containing 300ml of H at a concentration of 1mol / L in the cell 2 SO 4 solution, connected to a DC power supply, at a current density of 10mA / cm 2 , after polarizing for 12 hours at 30°C, samples were taken, and the concentration of lead dissolved in the solution during the anodic polarization was detected by a graphite furnace atomic absorption spectrometer. Based on this, the dissolution stability of the electrode was evaluated, and compared with the general PbO 2 Electrodes and doping 6.0g L -1 PTFE-PbO 2 electrodes for comparison. The experimental results show that the average dissolution rate of lead under the anodic polarization of the electrode prepared by the method of the present invention is 1.417×10 -3 mg·h -1 cm -2 , while ...

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
electrical resistivityaaaaaaaaaa
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

A preparation method of a titanium-based polyaniline-doped lead dioxide composite electrode material, comprising three steps: titanium substrate pretreatment, PbO2 intermediate layer preparation and polyaniline-doped PbO2 surface active layer preparation; the polyaniline particles in the conductive state are dispersed In the electrodeposition solution, polyaniline and PbO2 are uniformly co-deposited on Ti / PbO2 by composite electrodeposition, and the surface is dense, uniform, and grainy by controlling the amount of polyaniline, deposition current density, deposition temperature, and time. Obviously refined Ti / PbO2 / PANi‑PbO2 composite electrode material; the present invention overcomes the adverse effects of non-conductive polymer doping on the electrical conductivity of PbO2 electrodes, avoids the use of aniline monomers, and realizes them through monomer electropolymerization Many uncertainties in doping ensure the stable performance of polyaniline-doped PbO2 electrode materials; the obtained electrode materials have high activity and stability, and their dissolution stability is significantly better than that of undoped PbO2 electrodes, which can significantly improve the performance of PbO2 electrodes. Application safety of electrode electro-oxidation treatment for biorefractory organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel electrode materials, and in particular relates to a preparation method of a composite electrode material doped with titanium-based polyaniline and lead dioxide. Background technique [0002] The key to the removal of toxic and refractory organics from industrial wastewater during the electrochemical oxidation process is the electrode material with electrocatalytic activity. High stability, high activity, and low cost are the properties that people expect electrode materials to possess. PbO 2 Due to its good electrical conductivity and corrosion resistance, high oxygen evolution overpotential, low cost and strong oxidation ability, the electrode is one of the electrode materials with the longest research and application history and the most extensive oxidation removal of organic matter. with broadly application foreground. PbO 2 The electrode is generally supported by an inactive T...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F1/4672C02F2001/46138C02F2001/46142C02F2101/30C02F2101/345C02F2209/08
Inventor 于丽花薛娟琴代继哲毕强唐长斌
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com