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

Preparation and application of a one-dimensional titanium dioxide nanocomposite photoanode activated by mxene quantum dots

A nanocomposite and quantum dot technology, applied in photosensitive devices, photovoltaic power generation, electrolytic capacitors, etc., can solve the problems of reducing the recombination efficiency of photogenerated carriers and restricting high-efficiency applications, achieving strong electrostatic bonding, not easy to fall off, and improving stability. sexual effect

Active Publication Date: 2022-07-12
FUZHOU UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to TiO 2 After being excited by light, its photogenerated carriers will undergo rapid recombination, thus limiting its efficient application in the field of photoelectrocatalysis.
In this regard, in the past decade, a lot of work has been devoted to reducing TiO 2 The photogenerated carrier recombination efficiency of

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
  • Preparation and application of a one-dimensional titanium dioxide nanocomposite photoanode activated by mxene quantum dots
  • Preparation and application of a one-dimensional titanium dioxide nanocomposite photoanode activated by mxene quantum dots
  • Preparation and application of a one-dimensional titanium dioxide nanocomposite photoanode activated by mxene quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] One-dimensional TiO activated by MXene quantum dots 2 Preparation of nanocomposite photoanode:

[0042] Prepare a 50ml capacity polytetrafluoroethylene high-temperature reactor liner, add 15ml ultrapure water and 15ml concentrated hydrochloric acid to it, and stir for 5min at a rotational speed of 1000r / min. Then, 0.45 ml of tetrabutyl titanate was added dropwise to the inner pot, followed by stirring for 15 min, until the solution in the inner pot became clear. The cleaned FTO glass was slowly immersed in the above-prepared precursor solution leaning against the inner wall of the inner tank with the conductive surface facing down, and the inner tank was placed in a high-temperature stainless steel reaction kettle, and hydrothermally heated at 150 ° C for 12 hours. After the hydrothermal treatment is over, take out the FTO glass in the inner tank, rinse it several times with deionized water, and dry it with nitrogen. It can be found that a layer of white substance, nam...

Embodiment 2

[0047] One-dimensional TiO activated by MXene quantum dots with reference to Example 1 2 Preparation method of nanocomposite photoanode, obtained TiO 2 / (PDDA / MQDs) 6 Multilayer composite photoanode.

[0048] In order to prove that PDDA and MQDs have a synergistic effect on photoelectric performance as components in the composite photoanode, the two are indispensable. Therefore, as a comparison, PDDA alone and MXene quantum dots alone are also in the form of 6 layers. loaded onto TiO 2 On the nanorod substrate, a binary composite photoanode TiO was fabricated 2 / (PDDA) 6 and TiO 2 / (MQDs) 6 , and use the following methods to test.

[0049] Through the electrochemical workstation, and under simulated sunlight, the TiO 2 / (PDDA / MQDs) 6 , TiO 2 / (PDDA) 6 , TiO 2 / (MQDs) 6 and pure TiO 2 These four photoanode samples were subjected to IPCE testing, and TiO 2 / (PDDA / MQDs) 6 It has the largest incident photon-current conversion efficiency, up to 16%.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of photoelectrode material preparation and photoelectric catalysis, in particular to a one-dimensional TiO2 activated by MXene quantum dots 2 Preparation and application of nanocomposite photoanode, through electrostatic layer-by-layer self-assembly, makes MXene quantum dots, non-conjugated polyelectrolyte PDDA and one-dimensional TiO 2 The nanorod arrays are combined to form a multilayer heterojunction photoanode and applied to photocatalytic water splitting. The present invention uses MXene quantum dots to activate polyelectrolyte-coated one-dimensional TiO for the first time 2 Nanostructure, the prepared photoanode has efficient photoelectric catalytic ability, and the loading of MXene quantum dots can be realized by adjusting the number of self-assembled layers. The overall preparation process of the invention is simple, the design principle is reliable, and the sustainable development of environment and energy is favorable.

Description

technical field [0001] The invention belongs to the technical field of photoelectrode material preparation and photoelectric catalysis, in particular to a one-dimensional TiO2 activated by MXene quantum dots 2 Preparation method of nanocomposite photoanode and its application in photoelectric catalytic water splitting. Background technique [0002] TiO was first discovered by Fujishima and Honda in Japan in the early 1970s 2 It can be used for photocatalytic decomposition of water to produce hydrogen. Since then, semiconductor photocatalysis and photoelectric catalytic decomposition of water to produce hydrogen have begun. [0003] For existing metal oxide semiconductors, TiO 2 Due to its good chemical stability, non-toxicity and low cost, it is widely used as a benchmark semiconductor in photoelectric catalytic reactions. One-dimensional nanostructured TiO grown directly from a conductive substrate 2 Most typically, its structural advantages are highly ordered nanostruc...

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): H01G9/20H01G9/042
CPCH01G9/20H01G9/2031H01G9/2022Y02E10/542
Inventor 肖方兴李申朱诗成
Owner FUZHOU 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