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Preparation method of strontium-titanate hollow nanorod array

A technology of hollow nanometer and strontium titanate, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high cost and complicated preparation process, and achieve the effect of low cost, simple process and easy large-scale preparation

Inactive Publication Date: 2013-03-27
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, Masahiro (Masahiro Miyauchi, Thin films of single-crystalline SrTiO 3 nanorod arrays and their surface wettability conversion, Journal of Physical Chemistry C, 2007, 111: 12440-12445) first deposited a titanium film on a sapphire substrate by magnetron sputtering, and hydrothermally reacted the titanium film in a sodium hydroxide solution to form titanate nanotubes, followed by ion exchange in strontium acetate solution and final annealing treatment to obtain SrTiO 3 Nanorod arrays, which are complex and costly to prepare
In addition, there is no research on SrTiO 3 A report on hollow nanorod arrays

Method used

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  • Preparation method of strontium-titanate hollow nanorod array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of the strontium titanate hollow nanorod array is operated according to the following steps:

[0020] (1) Prepare a mixed solution of ammonium fluorotitanate, strontium nitrate and boric acid, control the concentration ratio to 1:1:3, in which the concentration of ammonium fluorotitanate solution is 0.025mol / L, heat the reaction solution and keep it at a constant temperature of 40° C;

[0021] (2) Put the substrate with zinc oxide nanorod arrays into the reaction solution and let it stand for 60 minutes to perform SrTiO 3 The deposition of zinc oxide nanorod arrays is based on a glass sheet, the diameter of the nanorods is 130nm, and the length is 1μm, which is prepared by a conventional solution method;

[0022] (3) Take out the substrate, wash and dry it, put it into a heat treatment furnace for annealing at 700°C for 1 hour, and the strontium titanate hollow nanorod array is prepared.

[0023] The finished product that embodiment 1 is made ut...

Embodiment 2

[0025] The preparation method of the strontium titanate hollow nanorod array is operated according to the following steps:

[0026] (1) Prepare a mixed solution of ammonium fluorotitanate, strontium nitrate and boric acid, control the concentration ratio to 1:1:4, in which the concentration of ammonium fluorotitanate solution is 0.05mol / L, heat the reaction solution and keep it at a constant temperature of 40° C;

[0027] (2) Put the substrate with zinc oxide nanorod arrays into the reaction solution and let it stand for 20 minutes to perform SrTiO 3 The deposition of zinc oxide nanorod arrays is based on a glass sheet, the diameter of the nanorods is 200nm, and the length is 2μm, which is prepared by a conventional solution method;

[0028] (3) Take out the substrate, wash and dry it, put it into a heat treatment furnace for annealing at 500°C for 2 hours, and the strontium titanate hollow nanorod array is prepared.

Embodiment 3

[0030] The preparation method of the strontium titanate hollow nanorod array is operated according to the following steps:

[0031] (1) Prepare a mixed solution of ammonium fluorotitanate, strontium nitrate and boric acid, control the concentration ratio to 1:1:4, in which the concentration of ammonium fluorotitanate solution is 0.1mol / L, heat the reaction solution and keep it at a constant temperature of 30° C;

[0032] (2) Put the substrate with zinc oxide nanorod arrays into the reaction solution and let it stand for 5 minutes to perform SrTiO 3 The deposition of ZnO nanorod arrays is based on a glass sheet, the diameter of the nanorods is 100nm, and the length is 1.5μm, which is prepared by a conventional solution method;

[0033] (3) Take out the substrate, wash and dry it, put it into a heat treatment furnace for annealing at 800°C for 1 hour, and the strontium titanate hollow nanorod array is prepared.

[0034] The invention provides a method for preparing SrTiO by us...

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Abstract

The invention discloses a preparation method of a strontium-titanate hollow nanorod array, belonging to the technical field of nanometer material preparation. According to the method, the strontium-titanate hollow nanorod array is prepared by simultaneously implementing deposition of strontium titanate and consumption of zinc oxide through taking a zinc-oxide nanorod array as a sacrificial template and combining a liquid phase deposition method. The method is simple in procedure, low in cost, good in repeatability, and capable of easily realizing large-area preparation.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing a strontium titanate hollow nanorod array. Background technique [0002] Strontium titanate (SrTiO 3 ) is a multifunctional electronic ceramic material, which has good ferroelectric, piezoelectric and dielectric properties, and is widely used in the manufacture of capacitors, pyroelectric detectors, piezoresistors and oxygen sensors; at the same time, it is also It is an effective semiconductor photocatalytic material with a bandgap of 3.4 eV and good photostability and thermal stability. Therefore, it has also received great attention in the fields of photocatalytic water splitting to produce hydrogen and photocatalytic degradation of organic pollutants. Big attention. One-dimensional nanomaterials have better physical and chemical properties than nanopowders or nanofilms due to their high specific surface area and aspect rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B82Y30/00B82Y40/00
Inventor 涂亚芳桑建平牛晓娟
Owner JIANGHAN UNIVERSITY
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