Method for preparing organic semi-conductor composite titanium oxide nanometer line

A technology of organic semiconductor and titanium oxide, which is applied in the field of nanometer and material science, can solve the problems of energy consumption, inability to oxidize titanium organic matter doping and compounding, etc., and achieve the effect of good light performance

Inactive Publication Date: 2008-03-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process not only consumes a lot of energy, but also makes it impossible to do organic doping and recombination of titanium oxide through this process; and organic materials, especially organic semiconducting polymers, can improve carrier transfer efficiency and improve oxidation efficiency. The optical properties of titanium are very important for the application of titanium oxide in solar cells, catalysts, sensors, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1. A method for preparing organic semiconductor composite titanium oxide nanowires, followed by the following steps:

[0025] 1). Preparation of anatase crystal titanium sol:

[0026] (a) Under stirring conditions, add butyl titanate to anhydrous ethanol for dilution, the mass ratio of anhydrous ethanol to titanium salt is 1:1, and stir to obtain a butyl titanate ethanol solution;

[0027] (b) In a water bath at 5°C, add butyl titanate ethanol solution dropwise to the water whose pH is adjusted to 0.1 with nitric acid, the mass ratio of water to butyl titanate ethanol solution is 50:1, and the addition is complete Afterwards, the reaction was stirred for 2 hours, and then left to stand for 5 hours to obtain anatase crystal titanium sol;

[0028] 2) Add polyethylene dioxythiophene (PEDT)-polystyrene sulfonate (PSS) to anatase crystal titanium sol, and stir it evenly to obtain PEDT / PSS composite titanium sol; anatase crystal titanium sol The weight ratio with organic ...

Embodiment 2

[0032] Embodiment 2. A method for preparing organic semiconductor composite titanium oxide nanowires, followed by the following steps:

[0033] 1). Preparation of anatase crystal titanium sol:

[0034] (a) Under stirring conditions, add titanium tetrachloride to ethylene glycol to dilute, and the mass ratio of ethylene glycol to titanium tetrachloride is 10:1, and stir evenly to prepare a titanium tetrachloride glycol solution;

[0035] (b) In the 95℃ water bath, add the titanium tetrachloride glycol solution dropwise to the water whose pH value of the solution is adjusted to 5 with hydrochloric acid, the mass ratio of water to the titanium tetrachloride glycol solution is 500 :1; After the dripping is completed, the reaction is stirred for 5 hours, and then left to stand for 1 hour to obtain anatase crystal titanium sol;

[0036] 2) Add polystyrene sulfonic acid (PSSA) doped polyaniline (PAn) (the weight ratio of PSSA to PAn is 1:10) into the anatase crystal titanium sol, and sti...

Embodiment 3

[0041] Embodiment 3. A method for preparing organic semiconductor composite titanium oxide nanowires, followed by the following steps:

[0042] 1). Preparation of anatase crystal titanium sol:

[0043] (a) Under stirring conditions, add titanium sulfate to an alcohol solvent consisting of anhydrous ethanol, ethylene glycol and isopropanol (the weight ratio of anhydrous ethanol, ethylene glycol and isopropanol is 5:2:3) to dilute, The mass ratio of the alcohol solvent to the titanium sulfate is 5:1, and the titanium sulfate alcohol solution is prepared by stirring evenly;

[0044] (b) In a water bath at 55°C, add the titanium alcohol sulfate solution dropwise to the water whose pH value is adjusted to 3 with phosphoric acid, and the weight ratio of water to the titanium alcohol sulfate solution is 300:1; after the addition is complete, Stir and react for 0.5 hours; let stand for another 15 hours to obtain anatase crystal titanium sol;

[0045] 2). Add the mixture of PEDT / PSS and PS...

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Abstract

The present invention discloses process of preparing organic semiconductor compounded nanometer titania line with titania sol of anatase crystal. The process includes the following steps: 1. adding organic semiconductor into titania sol of anatase crystal through stirring to obtain organic semiconductor compounded titania sol; 2. soaking alumina template with nanometer pores inside the sol for filling the sol into the pore canals of the template, or setting the sol on one side of the alumina template and adding negative pressure other the other side to fill the sol into the pore canal of the template; 3. taking out the alumina template with nanometer pores and drying; and 4. and dissolving off the alumina template with nanometer pores with alkali or acid to obtain the organic semiconductor compounded nanometer titania line. The nanometer titania line thus prepared has high optical performance and high carrier transferring efficiency.

Description

Technical field [0001] The invention relates to the field of nanometer and material science, in particular to a method for preparing organic semiconductor composite titanium oxide nanowires through a template at low temperature. Background technique [0002] The semiconductor material titanium oxide has attracted great attention in various fields such as solar energy utilization, environmental purification, sensors, and catalysts. The use of porous alumina (AAO) template to prepare titanium oxide into nanowires or nanowire arrays can increase the specific surface area, increase the carrier transfer efficiency, prepare nano-prototype devices, and improve the integration of nano-components. Therefore, it is important significance. [0003] Titanium dioxide nanowires have broad application prospects in gas sensors, humidity sensors, solar cells, nanoelectronic devices, lithium batteries, etc., but the existing preparation methods that are compatible with template methods such as sol...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 高基伟
Owner ZHEJIANG UNIV
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