Preparation method of double-rare-earth-doped TiO2 nanotube ordered array

A technology of nanotube arrays and ordered arrays is applied in the field of preparation of one-dimensional nanomaterial titanium dioxide composite modification, which can solve the problems of high cost, difficult to obtain nanotube thin films, difficult separation of nanotube arrays, etc. The effect of uniform film formation and low price

Inactive Publication Date: 2013-10-02
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent prepares highly ordered TiO on existing titanium sheets or foils 2 Nanotube array, but the defect of this patent is that the cost is high, and the prepared nanotube array is difficult to separate from the titanium sheet or titanium foil, so it is difficult to obtain a very thin layer of TiO 2 nanotube film

Method used

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  • Preparation method of double-rare-earth-doped TiO2 nanotube ordered array
  • Preparation method of double-rare-earth-doped TiO2 nanotube ordered array
  • Preparation method of double-rare-earth-doped TiO2 nanotube ordered array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Put 5×5cm Al 2 o 3 The ceramic sheet was ultrasonically cleaned in acetone, alcohol and deionized water for 10 min in sequence;

[0036] (2) Place the ceramic sheet in (1) in the magnetron sputtering chamber, use DC sputtering titanium target, sputter a layer of pure Ti, sputtering power 200W, sputtering time 1h, pure argon gas flow rate 20sccm, Back vacuum degree 4.0×10 -4 Pa, the sputtering pressure is 0.3pa, and the final titanium film thickness is about 1.5μm;

[0037] (3) To prepare an anodic oxidation solution, measure 360ml of glycerin, 40ml of deionized water, and weigh NH 4 F4.7972g.

[0038] (4) Anodize the titanium film obtained in (2) with a voltage of 10V and a time of 2h.

[0039] (5) Prepare double rare earth doping solution, measure 100ml deionized, 0.0962g lanthanum nitrate, 0.0533g gadolinium nitrate;

[0040] (6) TiO obtained in (4) 2 The nanotube array is soaked in the solution prepared in step (5), placed in an oven, subjected to hydrotherm...

Embodiment 2

[0043] (1) Al 2 o 3 The ceramic sheet was ultrasonically cleaned in acetone, alcohol and deionized water for 10 min in sequence;

[0044] (2) Place the ceramic sheet in (1) in the magnetron sputtering chamber, use DC sputtering titanium target, sputter a layer of pure Ti, sputtering power 150W, sputtering time 2h, pure argon gas flow rate 60sccm, Back vacuum degree 9.0×10 -4 Pa, the sputtering pressure is 0.6pa, and the final titanium film thickness is about 1.3μm; the substrate temperature is 200°C;

[0045] (3) Configure the electrolyte for anodic oxidation, measure 360ml of glycerin, 36ml of deionized water, and weigh NH 4 F4.7972g.

[0046] (4) Perform anodic oxidation on the titanium film obtained in (2) with a voltage of 30V and a time of 0.5h.

[0047] (5) Prepare double rare earth doping solution, measure 100ml deionized, 0.1920g lanthanum nitrate, 0.1327g gadolinium nitrate;

[0048] (6) TiO obtained in (4) 2 The nanotube array was soaked in the solution prepar...

Embodiment 3

[0051] (1) Al 2 o 3 The ceramic sheet was ultrasonically cleaned in acetone, alcohol and deionized water for 10 min in sequence;

[0052] (2) Place the ceramic sheet in (1) in the magnetron sputtering chamber, use DC sputtering titanium target, sputter a layer of pure Ti, sputtering power 180W, sputtering time 2h, pure argon gas flow rate 80sccm, Back vacuum degree 6.0×10 -4 Pa, the sputtering pressure is 0.8pa, and the final titanium film thickness is about 1.3μm; the substrate temperature is 400°C;

[0053] (3) Prepare the electrolyte for anodic oxidation, measure 360ml of glycerin, 40ml of deionized water, and weigh 4.8044g of NH4F.

[0054] (4) Anodize the titanium film obtained in (2) with a voltage of 20V and a time of 1h.

[0055] (5) Prepare double rare earth doping solution, measure 100ml deionized, 0.1432g lanthanum nitrate, 0.0668g gadolinium nitrate;

[0056] (6) TiO obtained in (4) 2 The nanotube array was soaked in the solution prepared in step (5), put int...

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Abstract

The invention discloses a preparation method of a double-rare-earth-doped TiO2 nanotube ordered array, which comprises the following steps: (1) spattering a pure titanium film on an Al2O3 ceramic wafer by a magnetron sputtering process; (2) anodizing the Al2O3 ceramic wafer with the titanium film to obtain a highly-ordered TiO2 nanotube array; and (3) soaking the ceramic wafer with the TiO2 nanotube array in a double-rare-earth solution, and carrying out ion doping by a hydrothermal process. The method overcomes the defect that the preparation of the highly-ordered TiO2 nanotubes must use a titanium wafer or titanium foil, can successfully load the double-rare-earth ions to the inside or surface of the titanium dioxide nanotubes, and greatly enhances the photocatalytic property of the TiO2. The invention is simple to operate, and has the advantages of mild reaction conditions and stable product property; and the magnetron sputtering process has the advantages of low price and uniform film formation, can be used for preparing large-area films, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the preparation of a one-dimensional nanometer material titanium dioxide composite modification, in particular, it relates to a kind of double rare earth doped TiO 2 Preparation method of ordered array of nanotubes. Background technique [0002] Due to their unique properties such as small size effect, surface effect, quantum size effect, macroscopic quantum tunneling effect, and dielectric confinement effect, nanomaterials exhibit various superior properties that conventional materials do not possess. In the field of nanomaterials research, nano-titanium dioxide, as a functional semiconductor material, has a very wide range of uses in the fields of environmental protection, photoelectric conversion, coating industry and industrial catalysis. Nano-titanium dioxide material has the advantages of low price, non-toxicity, small particle size, less particle agglomeration, uniform and stable shape, and can be recycled, so it is fav...

Claims

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Application Information

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IPC IPC(8): C25D11/26C30B29/16C30B29/62C30B30/02
Inventor 柴瑜超林琳张小秋张柯余震何丹农
Owner SHANGHAI JIAO TONG UNIV
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