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

Titanium dioxide/cadmium sulfide/titanium dioxide composite film and application thereof

A technology of titanium dioxide and composite thin films, applied in chemical/physical processes, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effects of improving catalytic efficiency, low cost, and simple methods

Active Publication Date: 2014-04-23
TSINGHUA UNIV
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for titanium dioxide, a widely used semiconductor photocatalyst with low price, non-toxicity, chemical stability and high catalytic efficiency, it can only use ultraviolet light, which accounts for less than 5% of sunlight, due to its forbidden band width of about 3.0eV.

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
  • Titanium dioxide/cadmium sulfide/titanium dioxide composite film and application thereof
  • Titanium dioxide/cadmium sulfide/titanium dioxide composite film and application thereof
  • Titanium dioxide/cadmium sulfide/titanium dioxide composite film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Ultrasonic cleaning of the glass substrate 1 with acetone, alcohol, and deionized water one by one and drying;

[0029] (2) Fixing the pretreated glass substrate 1 on the sample stage of the electron beam evaporation coating machine;

[0030] (3) Titanium is used as the target material, and the target material is image 3 Medium solid matter 4 and molten matter 5, the chamber of the electron beam evaporation coating machine is pumped to 3×10 －8 ~5×10 －8 Torr's High Vacuum;

[0031] (4) Adjust the incident angle of the electron beam 6 from 3 to 85 degrees, and make the sample stage stand still or rotate at a rate of 10 rpm, and grow a 300nm thick titanium deposition film obliquely on the substrate 1 of the sample stage;

[0032] (5) Titanium dioxide nanorod array film was obtained by annealing the titanium nanorod array film at 450°C in air for 2 hours;

[0033] (6) Deposit cadmium sulfide nanoparticles on titanium dioxide nanorods by continuous ion layer adsorpt...

Embodiment 2

[0037] (1) Ultrasonic cleaning of the glass substrate 1 with acetone, alcohol, and deionized water one by one and drying;

[0038] (2) Fixing the pretreated glass substrate 1 on the sample stage of the electron beam evaporation coating machine;

[0039] (3) Titanium is used as the target material, and the target material is image 3 Medium solid matter 4 and molten matter 5, the chamber of the electron beam evaporation coating machine is pumped to 3×10 －8 ~5×10 －8 Torr's High Vacuum;

[0040] (4) Adjust the incident angle of the electron beam 6 from 3 to 85 degrees, and make the sample stage stand still or rotate at a rate of 10 rpm, and grow a 300nm thick titanium deposition film obliquely on the substrate 1 of the sample stage;

[0041] (5) Titanium dioxide nanorod array film was obtained by annealing the titanium nanorod array film at 450°C in air for 2 hours;

[0042] (6) Deposit cadmium sulfide nanoparticles on titanium dioxide nanorods by continuous ion layer adsorpt...

Embodiment 3

[0046] (1) Ultrasonic cleaning of the glass substrate 1 with acetone, alcohol, and deionized water one by one and drying;

[0047] (2) Fixing the pretreated glass substrate 1 on the sample stage of the electron beam evaporation coating machine;

[0048] (3) Titanium is used as the target material, and the target material is image 3 Medium solid matter 4 and molten matter 5, the chamber of the electron beam evaporation coating machine is pumped to 3×10 －8 ~5×10 －8 Torr's High Vacuum;

[0049] (4) Adjust the incident angle of the electron beam 6 from 3 to 85 degrees, and make the sample stage stand still or rotate at a rate of 10 rpm, and grow a 300nm thick titanium deposition film obliquely on the substrate 1 of the sample stage;

[0050] (5) Titanium dioxide nanorod array film was obtained by annealing the titanium nanorod array film at 450°C in air for 2 hours;

[0051] (6) Deposit cadmium sulfide nanoparticles on titanium dioxide nanorods by continuous ion layer adsorpt...

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
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a titanium dioxide / cadmium sulfide / titanium dioxide composite film and an application thereof in the technical field of wastewater treatment. A preparation method of the composite material comprises the following steps: depositing titanium on a substrate by adopting a tilting growth method, thereby obtaining a nano bar array film with favorable discreteness; annealing the titanium film at the air condition of 450 DEG C for 2 hours, thereby obtaining a titanium dioxide nano bar array film; depositing cadmium sulfide nano particles on a titanium dioxide nano bar array by a continuous ion layer adsorption reaction method, thereby obtaining a titanium dioxide / cadmium sulfide composite film, wherein the film has a favorable organic wastewater processing effect under visible light; and depositing a layer of titanium dioxide on the film again on the titanium dioxide / cadmium sulfide composite film by an atomic layer deposition method. The visible light organic wastewater degrading efficiency of the titanium dioxide / cadmium sulfide / titanium dioxide structure is improved obviously compared with that of the titanium dioxide / cadmium sulfide. The processing method is simple, the visible catalytic performance of the composite film is obviously improved, and the composite film has a wide application prospect in wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a titanium dioxide / cadmium sulfide / titanium dioxide composite film and an application thereof. Background technique [0002] With the development of society, the problem of energy shortage and environmental pollution is becoming more and more serious, and it is particularly urgent for people to use renewable energy. Photocatalytic materials can use renewable solar energy to decompose organic pollutants in the environment into harmless substances, and are considered to be the most promising environmental pollution control technology. However, for titanium dioxide, a widely used semiconductor photocatalyst with low price, non-toxicity, chemical stability and high catalytic efficiency, it can only use ultraviolet light, which accounts for less than 5% of sunlight, due to its forbidden band width of about 3.0eV. . Improving the utilization efficiency of tit...

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): B01J27/04C02F1/30
CPCY02W10/37
Inventor 张政军谢拯
Owner TSINGHUA 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