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

Ti3C2-MXene modified alpha-iron oxide photoelectrode and preparation method thereof

An iron oxide light and electrode technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of complex steps, low charge transfer efficiency, poor conductivity, etc. The effect of poor conductivity

Active Publication Date: 2020-11-20
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor conductivity of α-iron oxide itself, too fast surface electron / hole combination rate, low charge transport efficiency and complicated steps of traditional modification methods, the present invention provides a Ti 3 C 2 - A preparation method of MXene-modified α-iron oxide photoelectrode, which is simple and feasible, and effectively improves the photoelectrocatalytic performance of α-iron oxide photoelectrode

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
  • Ti3C2-MXene modified alpha-iron oxide photoelectrode and preparation method thereof
  • Ti3C2-MXene modified alpha-iron oxide photoelectrode and preparation method thereof
  • Ti3C2-MXene modified alpha-iron oxide photoelectrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Ti 3 C 2 -MXene-modified α-iron oxide photoelectrode, wherein the feed amount in the hydrothermal method is: Ti 3 C 2 - 50 mg of MXene, 250 mg of ferric chloride, 1 mol / L of sodium nitrate aqueous solution, and a total volume of 10 mL of the reaction solution.

[0040] The above Ti 3 C 2 -The preparation method of the α-iron oxide photoelectrode of MXene modification, comprises following preparation steps:

[0041] (1) Put Ti 3 C 2 The powder was dissolved in water (100mg / 100mL), ultrasonicated for 3 hours, and freeze-dried to obtain two-dimensional Ti 3 C 2 - MXene nanosheets;

[0042] (2) Put the FTO conductive glass in the reactor, and add ferric chloride, Ti 3 C 2 -MXene nanosheets and sodium nitrate aqueous solution;

[0043] (3) React the reactor at 150°C for 5 hours. After the reaction, take out the iron oxide and Ti deposited on the surface. 3 C 2 - MXene's FTO conductive glass, cleaned in the order of ultrapure water / absolute ethanol / ultrapure wat...

Embodiment 2

[0047] Ti 3 C 2 -MXene-modified α-iron oxide photoelectrode, wherein the feed amount in the hydrothermal method is: Ti 3 C 2 - 20 mg of MXene, 250 mg of ferric chloride, 1 mol / L of sodium nitrate aqueous solution, and a total volume of 10 mL of the reaction solution.

[0048] The above Ti 3 C 2 -The preparation method of the α-iron oxide photoelectrode of MXene modification, comprises following preparation steps:

[0049] (1) Put Ti 3 C 2 The powder was dissolved in water (50mg / 100mL), ultrasonicated for 2 hours, and freeze-dried to obtain two-dimensional Ti 3 C 2 - MXene nanosheets;

[0050] (2) Put the FTO conductive glass in the reactor, and add ferric chloride, Ti 3 C 2 -MXene nanosheets and sodium nitrate aqueous solution;

[0051] (3) React the reactor at 150°C for 5 hours. After the reaction, take out the iron oxide and Ti deposited on the surface. 3 C 2 - MXene's FTO conductive glass, cleaned in the order of ultrapure water / absolute ethanol / ultrapure wate...

Embodiment 3

[0055] Ti 3 C 2 -MXene-modified α-iron oxide photoelectrode, wherein the feed amount in the hydrothermal method is: Ti 3 C 2 - MXene 100mg, ferric chloride 250mg, sodium nitrate aqueous solution 1mol / L, the total volume of the reaction solution is 10mL.

[0056] The above Ti 3 C 2 -The preparation method of the α-iron oxide photoelectrode of MXene modification, comprises following preparation steps:

[0057] (1) Put Ti 3 C 2 The powder was dissolved in water (120mg / 150mL), ultrasonicated for 3 hours, and freeze-dried to obtain two-dimensional Ti 3 C 2 - MXene nanosheets;

[0058] (2) Put the FTO conductive glass in the reactor, and add ferric chloride, Ti 3 C 2 -MXene nanosheets and sodium nitrate aqueous solution;

[0059] (3) React the reactor at 150°C for 5 hours. After the reaction, take out the iron oxide and Ti deposited on the surface. 3 C 2 - MXene's FTO conductive glass, cleaned in the order of ultrapure water / absolute ethanol / ultrapure water;

[0060] ...

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
Photocurrent densityaaaaaaaaaa
Photocurrent densityaaaaaaaaaa
Photocurrent densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a Ti3C2-MXene modified alpha-iron oxide photoelectrode and a preparation method thereof, and relates to the technical field of nano materials. The method comprises the following steps: dipping FTO conductive glass into a reaction kettle containing a mixed aqueous solution of ferric salt and Ti3C2-MXene, co-depositing iron oxide and Ti3C2-MXene on the surface of FTO conductive glass by using a hydrothermal method, and carrying out annealing treatment to obtain the Ti3C2-MXene modified alpha-iron oxide photoelectrode. According to the Ti3C2-MXene modification method, theproblems that traditional alpha-iron oxide is poor in conductivity, short in surface carrier life and the like are solved, the photoelectric conversion efficiency of the alpha-iron oxide is improved,and then the photoelectrocatalysis capacity of the alpha-iron oxide is improved.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a Ti 3 C 2 -MXene-modified α-iron oxide photoelectrode and its preparation method. Background technique [0002] The development and utilization of clean energy is of great significance to solve the energy problems of contemporary society. Among them, photocatalytic water splitting is considered to be very promising because it can use renewable water resources, abundant solar energy and electricity to produce clean hydrogen energy. of a technology. The α-crystalline iron oxide is a semiconductor photocatalyst with wide application prospects due to its suitable band gap, high solar energy utilization efficiency, high stability, low price and environmental friendliness. However, problems such as poor electrical conductivity, fast surface electron / hole incorporation rate, and low charge transport efficiency reduce the photoelectric conversion efficiency of α-iron oxide, lim...

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): C25B1/04C25B11/06
CPCC25B1/04Y02E60/36
Inventor 胡建强叶融凯
Owner SOUTH CHINA UNIV OF TECH
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