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

Preparation of a transition metal dichalcogenide thin film and its photocatalytic application

A transition metal disulfide, photocatalyst technology, applied in physical/chemical process catalysts, non-metallic elements, inorganic chemistry, etc., can solve the problem of not being introduced reasonably and effectively, achieve excellent stability, single growth environment, improve The effect of photocatalytic efficiency

Active Publication Date: 2021-04-02
BEIJING UNIV OF CHEM TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although platinum selenide has been proved to have ultra-high electron transport ability and excellent stability, it has not been reasonably and effectively introduced into the field of photocatalytic hydrogen production. There is also a vacancy in the application 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 of a transition metal dichalcogenide thin film and its photocatalytic application
  • Preparation of a transition metal dichalcogenide thin film and its photocatalytic application
  • Preparation of a transition metal dichalcogenide thin film and its photocatalytic application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of platinum selenide thin film

[0032] 1) A vacuum thin film evaporation system is used to evaporate and deposit 20nm metal platinum on a substrate (selected from fluorine-doped tin oxide conductive glass (FTO)), and the evaporation current is 170A.

[0033] 2) Put the substrate deposited with 20nm metal platinum and 25mg of selenium powder in different porcelain boats, and place them in two different heating areas in a fully sealed quartz tube filled with argon, and prepare platinum selenide by chemical vapor deposition Film, wherein the temperatures of the two heating zones are respectively: the temperature of the growth source (ie the first heating zone) is 280°C, the temperature of the growth zone (ie the second heating zone) is 420°C, the heating time is 100min, and the residence time is For 90 minutes, the argon gas flow rate was 120 sccm, the pressure was 0.7 Torr, and finally the temperature was naturally cooled to room temperature to obtain a p...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

Preparation and photocatalytic application of a transition metal dichalcogenide film, belonging to the field of transition metal dichalcogenide photocatalysts. The present invention utilizes vacuum evaporation and chemical vapor deposition low-temperature selenization methods to successfully prepare multi-layered semi-metallic platinum selenide (PtSe 2 )film. Platinum selenide has ultra-high electron transport capabilities. It is deposited on the surface of a semiconductor photocatalyst to form a platinum selenide-semiconductor film, which is used for photocatalytic hydrogen production. The prepared platinum selenide-semiconductor film is easy to separate from the bulk aqueous phase after the heterogeneous reaction and can be easily reused, so it has ultra-high stability. Platinum selenide quickly conducts photogenerated electrons on the conduction band of semiconductor photocatalysts, effectively inhibits the recombination of electrons and holes, and greatly improves the photocatalytic performance of semiconductor photocatalysts.

Description

technical field [0001] The invention belongs to the field of transition metal dichalcogenide photocatalysts, in particular to the preparation of platinum selenide (PtSe 2 ) film, and apply it to hydrogen production by photolysis of water. [0002] technical background [0003] Environmental pollution and energy crisis have become two important issues urgently needed to be solved in realizing sustainable development of human beings. For the sustainable development of mankind, it is urgent to develop clean and efficient energy. Solar energy is considered to be the best choice to replace fossil energy due to its non-polluting, cheap, huge energy and ubiquity. At the same time, hydrogen is a clean energy with high calorific value. After burning, it only produces water without polluting the environment, and hydrogen is also a widely used chemical raw material. However, hydrogen production through traditional electrolysis of water and biomass The production of hydrogen with meth...

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): B01J27/057B01J35/00C01B3/04
CPCC01B3/042B01J27/0573C01B2203/0277B01J35/39Y02E60/36
Inventor 郑言贞张河川吕心顶邬娇娇陶霞
Owner BEIJING UNIV OF CHEM 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