Titanium oxide nano wire film on metallic titanium surface and manufacture method thereof

A technology of titanium oxide and metal titanium, which is applied in the direction of metal material coating technology, etc., to achieve the effect of increased specific surface area, good bonding, and rich production raw materials

Inactive Publication Date: 2009-01-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method does not involve the preparation of titania nanowire networks or titanate nanowires.

Method used

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  • Titanium oxide nano wire film on metallic titanium surface and manufacture method thereof
  • Titanium oxide nano wire film on metallic titanium surface and manufacture method thereof
  • Titanium oxide nano wire film on metallic titanium surface and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Place the pre-washed 1×1cm 2 The titanium metal sheet was etched with a 5wt% oxalic acid solution at 100° C. for two hours, ultrasonically washed with deionized water, and dried to obtain a metal titanium sheet with a clean surface.

[0027] 2) Immerse the titanium sheet in an oxidizing solution of 1ml NaOH (10M) and 1ml hydrogen peroxide (30%), place it in a closed reaction kettle and carry out the reaction in an oven at 80°C for 24 hours. After the reaction, a titanate nanowire network film on the titanium base is obtained, and the nanowire network structure generated on the surface is as follows: figure 1 and figure 2 As shown in the figure, nanowires with a diameter of about 40 nm are intertwined, forming pores of different sizes.

[0028] 3) The titanium sheet of the titanate nanowire film formed above was washed with deionized water, soaked in 0.1M hydrochloric acid for 0.5 hours, and then rinsed with deionized water until neutral, the same operation three t...

Embodiment 2

[0032] 1) Place the pre-washed 2×4cm 2 The metal titanium sheet was etched for 1 minute in a mixture of hydrofluoric acid: nitric acid: deionized water with a volume ratio of 1:3:6, ultrasonically cleaned with deionized water, and dried to obtain a metal titanium sheet with clean surface.

[0033] 2) Immerse the titanium sheet in an oxidizing solution of 1.5ml NaOH (10M) and 15ml hydrogen peroxide (30%), place it in a closed reactor and carry out the reaction in an oven at 80°C for 6 hours. After the reaction, a titanate nanowire network film on the titanium base is obtained, and the nanowire network structure generated on the surface is as follows: Figure 4 As shown, nanowires with diameters of about 30-50 nm are intertwined and wound to form pores of a certain size.

[0034]3) The titanium sheet of the titanate nanowire film formed above was cleaned with deionized water, placed in 0.05M hydrochloric acid for 1 hour, and then rinsed with deionized water to neutrality, and t...

Embodiment 3

[0038] 1) Place the pre-washed 2×2cm 2 The titanium metal sheet was etched with 5wt% oxalic acid solution at 100 °C for two hours, ultrasonically cleaned with deionized water, and dried to obtain a metal titanium sheet with clean surface

[0039] 2) Immerse the titanium sheet in an oxidizing solution of 2ml NaOH (10M) and 10ml hydrogen peroxide (30%), place it in a closed reaction kettle and carry out the reaction in an oven at 80°C for 12 hours. After the reaction, a titanate nanowire network film on the titanium base is obtained, and the nanowire network structure generated on the surface is as follows: Image 6 shown.

[0040] 3) The titanium sheet of the titanate nanowire film formed above was washed with deionized water, soaked in 0.1M hydrochloric acid for 2 hours, rinsed with deionized water until neutral, and dried in an oven at 80°C. A titanate nanowire film on the surface of metal titanium is obtained.

[0041] 4) calcining the titanium metal sheet with the titana...

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Abstract

The invention relates to a metal titanium surface titanium oxide nanowire film and the preparation method. The component of the prepared film can be titanate, titanic acid or titanium dioxide, the diameter of the nanowire is between 10nm to 100nm, the nanowires are interlaced and winded to form a great amount of large holes and mesopore networks, and the pore space is between 20nm to 500nm. The main procedures of the preparation method are: firstly, pickling cleaning of the metal titanium surface; secondly, mixed oxidizing solution of strong alkali and oxydol is used to oxidize the metal titanium surface and to form the titanate nanowire film; thirdly, acid soaking is adopted to exchange alkaline metal ions to form the titanic acid nanowire film; fourthly, the titanium dioxide nanowire film is formed through high temperature torrefying. The preparation method of the metal titanium surface titanium oxide nanowire film of the invention is simple, the cost is low, the method is suitable for large-scale industrial production, and the prepared titanium oxide has the application prospect in photochemical catalysis related field and the electrochemistry sensing related field.

Description

technical field [0001] The invention relates to a titanium oxide nanowire film on the surface of metal titanium and a preparation method thereof, in particular to a titanium dioxide nanowire network film material with photocatalytic activity and a preparation method thereof, belonging to the field of inorganic nanomaterials. Background technique [0002] Photocatalytic oxidation technology represented by titanium dioxide is a new type of pollution control technology. It has outstanding characteristics such as low energy consumption, mild reaction conditions, simple operation, no secondary pollution, etc., and has the potential to directly utilize solar energy, which is in energy The problem is becoming more and more serious today even more important. Although a large number of research reports have shown that typical refractory organic pollutants in water, such as dyes, surfactants, organic halides, pesticides, cyanides, phenols, polychlorinated biphenyls and polycyclic arom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23F1/26C23C22/64
Inventor 蔡伟民龙明策吴亚惠
Owner SHANGHAI JIAO TONG UNIV
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