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TiO2 nanotube array intertube-space filled polyethylenedioxythiophene composite material, and preparation method and application thereof

A technology of ethylenedioxythiophene and nanotube arrays, applied in electrolytic organic material coating, electrolytic coating, surface reaction electrolytic coating, etc., to achieve strong photocatalytic and photoelectric conversion performance, enhanced stability, and thin tube wall

Inactive Publication Date: 2013-10-23
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Currently, there is no selective modification of TiO with conductive, transparent polymer polyethylenedioxythiophene. 2 Reports on the inner and outer walls of nanotubes

Method used

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  • TiO2 nanotube array intertube-space filled polyethylenedioxythiophene composite material, and preparation method and application thereof
  • TiO2 nanotube array intertube-space filled polyethylenedioxythiophene composite material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] selectivity in TiO 2 The preparation method of nanotube array tube and tube space filling polyethylene dioxythiophene comprises the following steps:

[0031] (1) High-purity (above 99.5%) titanium sheets or titanium screens are pretreated (ultrasonic cleaning and drying in acetone, ethanol and distilled water, respectively) as anodes, and high-purity (above 99.5%) graphite rods are used as cathodes. Use 1,3 dimethylimidazolium tetrafluoroborate and water as the electrolyte, the mass ratio of water is 1%, anodize at 20V voltage, after 3 hours of reaction, rinse with deionized water to remove the residual electrolyte on the surface, use Scotch tape was used to remove the oxide film on the titanium substrate.

[0032] (2) Carry out secondary oxidation under the above conditions, rinse with deionized water to remove residual electrolyte on the surface, air-dry and calcinate in a muffle furnace at 400°C to obtain nanotubes with an inner diameter of 20nm, a wall thickness of...

Embodiment 2

[0035] selectivity in TiO 2 The preparation method of nanotube array tube and tube space filling polyethylene dioxythiophene comprises the following steps:

[0036] (1) High-purity (above 99.5%) titanium sheets or titanium screens are pretreated (ultrasonic cleaning and drying in acetone, ethanol and distilled water, respectively) as anodes, and high-purity (above 99.5%) graphite rods are used as cathodes. Using 1,3 dimethylimidazolium trifluoroacetate and water as the electrolyte, the mass ratio of water is 10%, anodized at 100V voltage, after 0.5h of reaction, rinse with deionized water to remove the residual electrolyte on the surface, Remove the oxide film on the titanium substrate with scotch tape.

[0037] (2) Carry out secondary oxidation under the above conditions, rinse with deionized water to remove residual electrolyte on the surface, air-dry and calcinate in a muffle furnace at 600°C to obtain nanotubes with an inner diameter of 80nm, a wall thickness of 20nm, and...

Embodiment 3

[0040] selectivity in TiO 2 The preparation method of nanotube array tube and tube space filling polyethylene dioxythiophene comprises the following steps:

[0041] (1) High-purity (above 99.5%) titanium sheets or titanium screens are pretreated (ultrasonic cleaning and drying in acetone, ethanol and distilled water, respectively) as anodes, and high-purity (above 99.5%) graphite rods are used as cathodes. Use N-butylpyridine trifluoromethanesulfonate and water as the electrolyte, the mass ratio of water is 7.5%, anodize at 60V voltage, after reacting for 1h, rinse with deionized water to remove the residual electrolyte on the surface, use a transparent Tape to remove the oxide film on the titanium substrate.

[0042] (2) Perform secondary oxidation under the above conditions, rinse with deionized water to remove residual electrolyte on the surface, air-dry and calcinate in a muffle furnace at 500°C to obtain nanotubes with an inner diameter of 40nm, a wall thickness of 30nm,...

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Abstract

The invention discloses a TiO2 nanotube array intertube-space filled polyethylenedioxythiophene composite material, and a preparation method and application thereof. The composite material is composed of independently separate TiO2 nanotube array intertube-space filled polyethylenedioxythiophenes. The preparation method sequentially comprises the following steps: carrying out secondary anodizing to obtain an independently separate TiO2 nanotube array; by using the independently separate TiO2 nanotube array as an anode and a platinum filament as a cathode, and carrying out constant-potential or constant-current electro-polymerization in a 0.1-5mM 3,4-ethylenedioxythiophene and 0.1-5mM sodium lauryl sulfate water solution to obtain the selective TiO2 nanotube array intertube-space filled polyethylenedioxythiophene composite material. The composite material can be used as a photoelectric electrode, and used in the fields of water-photolysis hydrogen production, environmental pollution treatment and dye-sensitized solar cells.

Description

technical field [0001] The invention belongs to the field of electrochemical inorganic / organic composite materials, in particular to a TiO 2 The modification method of nanotube array tube and its application, especially related to a kind of selectivity in TiO 2 Method and application of nanotube array tube and tube space filling polyethylene dioxythiophene. Background technique [0002] Highly ordered, open-topped, and vertically aligned TiO prepared on titanium substrates by anodic oxidation 2 Nanotube arrays (TNTs) have the characteristics of large specific surface area, excellent charge transfer characteristics, superior photocatalytic activity, and can be firmly attached to the substrate under a certain length. Solar cells, sensors and other fields have broad application prospects. However, the TiO 2 When the nanotube array is put into practical application, there is a band gap and low utilization rate of sunlight; the conductivity of the long nanotube array is still...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/02C25D11/26
Inventor 张延宗刘燕母康生吴凌姗沈飞邓仕槐王莉淋肖鸿杨刚蔺丽丽
Owner SICHUAN AGRI UNIV
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