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

Application of small size {001} TiO2/carbon aerogel electrode

A carbon aerogel, small-scale technology, used in the fields of pollution control and material chemistry, can solve problems such as limitations, and achieve the effects of improved activity, strong electrosorption capacity, and good electrical conductivity

Inactive Publication Date: 2014-08-06
TONGJI UNIV
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited geometric configuration of truncated tetragonal bipyramid and the specific growth direction of {001} crystal plane, the current preparation of {001} TiO 2 The method is often obtained in the liquid phase system, the macroscopic structure is mostly powder or granular, and TiO is rarely grown on the surface of the electrode. 2 {001} crystal facets, via electrochemical assistance in TiO 2 The application of photocatalytic methods based on {001} facets is limited.

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
  • Application of small size {001} TiO2/carbon aerogel electrode
  • Application of small size {001} TiO2/carbon aerogel electrode
  • Application of small size {001} TiO2/carbon aerogel electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Small-sized {001} TiO grown on the surface of a high-surface-area carbon aerogel 2 The preparation method of nanocrystalline electrode specifically comprises the following steps:

[0032] Weigh an appropriate amount of formaldehyde, resorcinol, resorcinol: formaldehyde: water: Na 2 CO 3The molar ratio is 1:2:17.5:0.0008 and mixed evenly. Put it into a mold, seal it and place it in an oven. Control the temperature at 30°C and 50°C for one day, and at 90°C for three days to carry out polymerization reaction to obtain organic RF wet gel. Polish the wet gel until the surface is dull. . Soak the obtained wet gel with acetone to replace the moisture in the wet gel network structure, soak the sample for 3 days, and replace fresh acetone every day to completely replace the moisture in the sample. Then dry at room temperature and normal pressure, and obtain a brown-yellow massive organic airgel with a complete structure after the acetone is completely volatilized. The RF or...

Embodiment 2

[0038] A small size {001} TiO 2 / Carbon airgel electrode for photocatalytic degradation of organic pollutant wastewater with {001}TiO 2 / The carbon airgel electrode is used as the anode, the platinum sheet is used as the cathode, and the saturated calomel electrode is used as the reference electrode, using a three-electrode system, applying a bias voltage of +0.6V, and a light intensity of 25mW / cm 2 , UV photodegradation of methylene blue dye wastewater with a concentration of 50mg / L.

[0039] {001}TiO 2 The preparation method of the carbon airgel electrode is as follows:

[0040] (1) Adopt formaldehyde, resorcinol, water and sodium carbonate to prepare organic wet gel:

[0041] Mix formaldehyde, resorcinol, water and sodium carbonate evenly, put it into a mold, seal it and put it in an oven for polymerization reaction, adopt temperature programming, keep it at 30°C for 24h, at 50°C for 24h, at 90°C Insulate for 72 hours to obtain organic wet gel, polish the organic wet ge...

Embodiment 3

[0053] A small size {001} TiO 2 / Application of carbon airgel electrodes to {001}TiO 2 / The carbon airgel electrode is used as the anode, the platinum sheet is used as the cathode, and the saturated calomel electrode is used as the reference electrode, using a three-electrode system, applying a bias voltage of +0.7V, and a light intensity of 30mW / cm 2 , UV photodegradation of methylene blue dye wastewater with a concentration of 80mg / L. Among them, {001}TiO 2 / TiO on Carbon Airgel Electrode 2 A truncated tetragonal bipyramid with exposed {001} crystal faces of 100 nm in size.

[0054] {001}TiO 2 The preparation method of the carbon airgel electrode is as follows:

[0055] (1) Adopt formaldehyde, resorcinol, water and sodium carbonate to prepare organic wet gel:

[0056] Mix formaldehyde, resorcinol, water and sodium carbonate evenly, put it into a mold, seal it and put it in an oven for polymerization reaction, adopt temperature programming, keep it at 30°C for 24h, at ...

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
surface energyaaaaaaaaaa
densityaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an application of a small size {001} TiO2 / carbon aerogel electrode, wherein a {001} TiO2 / carbon aerogel electrode is adopted as a working electrode, a three-electrode system is adopted to carry out constant potential photoelectrocatalysis oxidative degradation on methylene blue dye wastewater, and TiO2 on the {001} TiO2 / carbon aerogel electrode has a size of 50-150 nm and has a {001} crystal face exposed truncated tetragonal biconical shape. Compared with the application in the prior art, the application of the present invention has the following characteristics that: the carbon aerogel electrode is adopted as the matrix material, and a hydrothermal method is adopted to grow the TiO2 nanometer crystal having the exposed {001} crystal face, such that the excellent performance of the TiO2 having the exposed {001} crystal face is maintained, the photoelectrocatalysis activity of the electrode can be further enhanced by adopting the excellent electrochemical property of the carbon aerogel electrode, and the small size {001} TiO2 / carbon aerogel electrode is suitable for the field of photoelectrocatalysis degradation of environmental pollutants.

Description

technical field [0001] The present invention relates to the fields of pollution control and materials chemistry, and in particular to a small-sized {001} TiO 2 / Application of carbon airgel electrodes. Background technique [0002] As a new type of environmental pollutant degradation technology, semiconductor photocatalysis has attracted extensive attention. especially TiO 2 Photocatalytic technology has become one of the most effective catalysts in the treatment of refractory pollutants due to its non-toxic, low cost, strong oxidizing ability, stable photochemical properties, and resistance to chemical and photocorrosion. Improve TiO through various ways 2 The photon quantum efficiency has always been one of the hot spots and difficulties in photocatalyst research. Recent studies have shown that clean anatase TiO 2 The {001} crystal plane, with a higher surface energy (0.90J m-2), is more than twice that of the {101} crystal plane (0.44J m-2), which exhibits the highe...

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 Applications(China)
IPC IPC(8): C02F1/32C02F1/72C02F1/469
Inventor 赵国华金烨飞张亚男
Owner TONGJI UNIV
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