Titanium dioxide nanowire array film, and preparation and application thereof

A nanowire array and titanium dioxide technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as harsh reaction conditions, and achieve simple operation and green process effects

Active Publication Date: 2015-04-01
SHANGHAI NORMAL UNIVERSITY
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction conditions are more stringent

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 nanowire array film, and preparation and application thereof
  • Titanium dioxide nanowire array film, and preparation and application thereof
  • Titanium dioxide nanowire array film, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 30mL ultrapure water and 30mL HCl (concentration required) were stirred at 293K for 10min in advance, then added 1.2mL isopropoxide titanyl and continued to stir for 10min, then put it and FTO conductive glass into a 100mL polytetrafluoroethylene kettle and put it under water at 428K Heat for 4 hours. After cooling for 20 minutes under water shower conditions, rinse with ultrapure water, dry at room temperature for 12 hours under dark conditions, and finally calcinate in a muffle furnace at 200 ° C for 2 hours to obtain TiO 2 Nanowire Array Films. In 180mL 0.5M Na 2 SO 4 In a three-electrode system with a piece of TiO 2 The nanowire array film is the working electrode, and the other TiO 2 The thin film is the counter electrode, light is irradiated on the working electrode for 5 minutes, the counter electrode turns black, and the black TiO 2 The thin film is connected to the Pt electrode to realize energy release. Hydrogen is evolved on the Pt electrode. Taking 10 c...

Embodiment 2

[0024] In 120mL 0.5M Na 2 SO 4 , Add 30mL 5ppm methyl orange and 30mL0.5M Na to the working electrode solution 2 SO 4 , in a three-electrode system with a piece of TiO 2 The nanowire array film is the working electrode, and the other TiO 2 The thin film is the counter electrode, and the light is irradiated on the working electrode for 5 minutes, methyl orange is degraded, the counter electrode turns black, and the black TiO 2 The film is connected to the Pt electrode to realize energy release, and hydrogen is evolved on the Pt electrode. Taking 10 charge and discharge cycles as a cycle, the measured hydrogen production is shown in Table 2, and the degradation process of 5ppm methyl orange is shown in Figure 4 , all activity data were replicated more than three times.

Embodiment 3

[0026] In 90mL 0.5M Na 2 SO 4 , 90mL 2M ethylene glycol mixed solution and a piece of TiO in the three-electrode system 2 The nanowire array film is the working electrode, and the other TiO 2 The thin film is the counter electrode, apply -1V bias for 1min, the counter electrode turns black, and the black TiO 2 The thin film is connected to the Pt electrode to realize energy release, hydrogen is formed on the Pt electrode, and the amount of hydrogen produced is measured with 10 charge and discharge cycles. All activity data are repeated more than three times.

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
Login to view more

Abstract

The invention discloses a titanium dioxide nanowire array film, and preparation and application thereof. The film uses FTO (fluorine-doped tin oxide) conducting glass as a substrate and titanium dioxide as a rutile phase, and has a regular monocrystal one-dimensional structure. The film can be used for solar energy storage and hydrogen production: in a sodium sulfate three-tank reactor in a three-electrode system, light energy formed by light source irradiation is stored onto the TiO2 nanowire film, and the stored energy is used for hydrogen production under the conditions of no sacrifice agent by using Pt as a photocathode material. The energy storage-hydrogen production method is simple to operate and green and environment-friendly in process, has the characteristics of high sustainability and the like, can implement storage and utilization of sunlight, and provides a new research direction for application of the TiO2 film in the field of photoelectric catalysis.

Description

technical field [0001] The invention belongs to catalyst technology, specifically a single crystal TiO 2 The nanowire array thin film catalyst and its preparation method and its application in energy storage and hydrogen production and three-cell reactor, the invention finds a new method and idea for the storage of solar energy and its use in the production of clean energy. Background technique [0002] In recent years, in the face of increasingly serious energy and environmental problems, scientists from various countries hope to use solar energy efficiently. Therefore, how to use solar energy to prepare low-cost and high-efficiency solar energy storage catalysts has important research significance. TiO 2 As a low-cost, high-efficiency photocatalyst, the thin film can make good use of solar energy. This patent is TiO 2 Thin films provide new ideas and methods as new materials for energy storage. Although lithium-ion batteries and supercapacitors have received a lot of a...

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): B01J21/06C25B1/02
CPCY02P20/133
Inventor 李贵生王文超廉孜超李鑫崔莹莹李和兴
Owner SHANGHAI NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap