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

Preparation method of titanium-dioxide photo-nanotube array photo-anode with high photoelectric efficiency

A nanotube array and titanium dioxide technology, applied in photovoltaic power generation, photosensitive equipment, capacitor electrodes, etc., can solve the problem that visible light cannot be effectively absorbed and utilized, and achieve improved current density, photoelectric conversion efficiency, current density and photoelectric conversion efficiency High and simple preparation method

Inactive Publication Date: 2010-10-27
SOUTHWEST JIAOTONG UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But due to TiO 2 It is a wide bandgap semiconductor (Eg=3.2eV), which cannot effectively absorb and utilize most of the visible light, and cannot completely avoid the decrease in photon quantum efficiency caused by the recombination of photogenerated electrons and holes.

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 method of titanium-dioxide photo-nanotube array photo-anode with high photoelectric efficiency
  • Preparation method of titanium-dioxide photo-nanotube array photo-anode with high photoelectric efficiency
  • Preparation method of titanium-dioxide photo-nanotube array photo-anode with high photoelectric efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Using titanium foil as anode and platinum sheet as cathode, anodic oxidation was carried out at a constant voltage of 60V in an ethylene glycol solution containing 0.25% ammonium fluoride by mass fraction for 6 hours to obtain titanium dioxide nanotube arrays. The obtained array template was annealed at 450°C for 3.5 hours, the inner diameter of the titanium dioxide nanotube array was about 100nm, and the wall thickness was about 25nm, see figure 1 ; The tube length is about 10 μm see figure 2 ,. Then it is immersed in lead nitrate solution, deionized water, sodium sulfide solution and deionized water successively, lead and sulfur molar ratio Pb in the described solution: S=1: 1; In the present embodiment, concentration is 0.10mol. L -1 of Pb(NO 3 ) 2 and a concentration of 0.10mol L -1 Na 2 S solution, cyclic dipping 5-8 times. Obtain lead sulfide-modified titania nanotube array photoanodes, on TiO 2 PbS is formed in the tube and between the tubes of the nanot...

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
conversion efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a titanium-dioxide photo-nanotube array photo-anode with high photoelectric efficiency. The TiO2 nanotube array is modified by utilizing a narrow-band semiconductor. The preparation method is characterized by comprising the following steps of: preparing a titanium-dioxide nanotube array template through an anode oxidation method, and annealing the obtained titanium-dioxide nanotube array template at 450 DEG C for 3.5 hours; then sequentially immersing into a lead nitrate solution, deionized water, a sodium sulfide solution and the deionized water, wherein the mole ratio of lead to sulfur in the solutions is 1:1; and circulating for 5-8 times, and finally carrying out ultrasonic processing to obtain the lead sulfide modified titanium-dioxide nanotube array photo-anode. The preparation method of a titanium-dioxide nanotube array photo-anode material has simple production process; in addition, the prepared titanium-dioxide nanotube array photo-anode material has higher current density and photoelectric conversion efficiency, and can be directly used.

Description

technical field [0001] The invention relates to a preparation method of a photoanode material, in particular to a preparation method of a titanium dioxide photonanotube array photoanode with high current density and high photoelectric efficiency. Background technique [0002] The energy issue is an important issue that restricts the economic development of various countries. Because of its clean, convenient, and inexhaustible advantages, solar energy has become one of the most promising new energy sources in the 21st century. 1991 Switzerland Nanoporous TiO 2 For semiconductor electrodes, a novel dye-sensitized TiO 2 Nanocrystalline thin-film solar cells have achieved a photoelectric conversion efficiency of 7.1%. In 2001, Professor Grimes first prepared TiO with oriented alignment in a fluorine-containing electrolyte by anodic oxidation. 2 Nanotube array, because of its unique structure, makes it have larger specific surface area and stronger adsorption capacity, showin...

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): H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/549Y02P70/50
Inventor 杨峰蔡芳共赵勇
Owner SOUTHWEST JIAOTONG 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