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Preparation method for titanium dioxide nanotube array of inner surface of ultra-long fine titanium tube

A nanotube array, titanium dioxide technology, applied in surface reaction electrolytic coating, coating, electrolytic coating and other directions, can solve the problem of uneven length of nanotubes, and achieve the effects of simple preparation method, high efficiency and low cost

Inactive Publication Date: 2017-01-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the current titanium tube is only 1.7cm (L.Sun, X.Wang, M.Li, S.Zhang, Q.Wang, Langmuir 2014, 30, 2835-2841), and the length of the nanotubes on the inner surface of the titanium tube is uneven

Method used

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  • Preparation method for titanium dioxide nanotube array of inner surface of ultra-long fine titanium tube
  • Preparation method for titanium dioxide nanotube array of inner surface of ultra-long fine titanium tube
  • Preparation method for titanium dioxide nanotube array of inner surface of ultra-long fine titanium tube

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preparation example Construction

[0028] According to one aspect of the present invention, a method for preparing a titanium dioxide nanotube array on the inner surface of an ultra-long thin titanium tube is provided, which is characterized in that it includes the following steps:

[0029] A) Remove surface pollutants of the titanium tube, metal wire and sealing plug with a detergent; perform ultrasonic cleaning with deionized water, absolute ethanol, and deionized water in sequence; blow dry with nitrogen.

[0030] B) Inject an ethylene glycol solution containing 0.3wt% ammonium fluoride and 2vol% deionized water into the titanium tube; the DC voltage between the positive electrode titanium tube and the negative electrode wire is 20-120V; the anodic oxidation time is 20-600min ; The anodized titanium tube is ultrasonically cleaned with deionized water.

[0031] According to a more specific aspect of the present invention, in the above-mentioned preparation method:

[0032] carried out in the anodizing device...

Embodiment 1

[0035] After the titanium tube (1) with a diameter of 1 cm and a tube length of 100 cm, the titanium wire (2) and the sealing plug (3) with a diameter of 3 mm are removed by detergent, the surface stains are removed with deionized water, absolute ethanol, and deionized water in sequence. Ultrasonic cleaning in water for 10 minutes, and drying with nitrogen;

[0036] Fix the cleaned titanium wire (2) at the axial center of the sealing plug (3), pass through the titanium tube (1), and tighten it with a clamp (not shown) to keep the titanium wire (2) and the titanium tube (1) coaxiality, such as figure 1 shown;

[0037] Inject the ethylene glycol solution containing 0.3wt% ammonium fluoride and 2vol% deionized water into the titanium tube (1);

[0038] The titanium tube (1) is externally connected to the positive pole of a DC power supply (not shown), the titanium wire (2) is connected to the negative pole of the DC power supply, and the power is turned on for anodic oxidation ...

Embodiment 2

[0043] After the titanium tube (1) with a diameter of 1 cm and a tube length of 50 cm, the titanium wire (2) and the sealing plug (3) with a diameter of 3 mm are removed by detergent, the surface stains are removed with deionized water, absolute ethanol, and deionized water in sequence. Ultrasonic cleaning in water for 10 minutes, and drying with nitrogen;

[0044] Fix the cleaned titanium wire (2) at the axial center of the sealing plug (3), pass through the titanium tube (1), and tighten it with a clamp (not shown) to keep the titanium wire (2) and the titanium tube (1) coaxiality, such as figure 1 shown;

[0045] Inject the ethylene glycol solution containing 0.3wt% ammonium fluoride and 2vol% deionized water into the titanium tube (1);

[0046] The titanium tube (1) is externally connected to the positive pole of a DC power supply (not shown), the titanium wire (2) is connected to the negative pole of the DC power supply, and the power is turned on for anodic oxidation a...

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Abstract

The invention discloses a preparation method for a titanium dioxide nanotube array of an inner surface of an ultra-long fine titanium tube. With use of a coaxial electrochemical anodic oxidation device, the titanium dioxide nanotube array with the tube diameter of 30-50 nm and the tube length of about 1000 nm is prepared on the inner surface of the titanium tube with the length of 100 cm and the diameter of 1 cm. The preparation method has a series of advantages of simple device, easy operation, controllability, low cost, uniformity and the like. The titanium oxide nanotubes of the inner surface of the titanium tube can be used in the fields of thermal fluid, water treatment, solar batteries, gas sensors, lithium ion batteries and the like.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide nanotube array on the inner surface of an ultra-long thin titanium tube, belonging to the field of metal surface modification and application. Background technique [0002] Titanium dioxide (TiO 2 ) has excellent physical and chemical properties (X.Chen, S.S.Mao, Chem.Rev.2007, 107, 2891-2959), and has been used in solar cells, photolysis of water, drug release, gas sensors, biomaterials and other fields, In particular, nanotube arrays have become one of the most important research and development hotspots in this field because of their unique structural properties such as tubular structure, vertical growth, high specific surface area, and orderly arrangement. [0003] Since the report in 2001 (D.Gong, C.A.Grimes, O.K.Varghese, W.Hu, R.S.Singh, Z.Chen, E.C.Dickey, J.Mater.Res.2001, 16, 3331-3334) preparation of titanium dioxide by electrochemical anodic oxidation Since the creation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C25D7/04
Inventor 孙立东香承杰黄佳木
Owner CHONGQING UNIV