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Strontium-titanium dioxide/strontium titanate nanometer heterojunction, preparation method and application thereof

A titanium dioxide and heterojunction technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., to improve separation efficiency and photoelectrochemical performance

Active Publication Date: 2017-07-18
邳州泰利恒商贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current research on TiO with different shapes and sizes 2 The research and application of materials can no longer meet the ever-expanding requirements in many fields

Method used

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  • Strontium-titanium dioxide/strontium titanate nanometer heterojunction, preparation method and application thereof
  • Strontium-titanium dioxide/strontium titanate nanometer heterojunction, preparation method and application thereof
  • Strontium-titanium dioxide/strontium titanate nanometer heterojunction, preparation method and application thereof

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Embodiment 1

[0023] Sr-TiO of the present invention 2 / SrTiO 3 The preparation method of the nano-heterojunction is as follows:

[0024] (1) Cut titanium foil and clean titanium sheet;

[0025] First, the titanium foil was cut into 2.5 cm × 1.5 cm squares to obtain titanium sheets, which were washed three times with detergent and ultrasonically for 20 min each time to remove surface oil, and then washed in acetone, ultrapure water, anhydrous Ultrasonic cleaning in ethanol, 20 min each time. The above cleaning process was repeated three times, and then the surface was rinsed with ultrapure water, and finally washed with N 2 Blow dry and set aside.

[0026] (2) Weigh 4.0 g of NaOH and dissolve it in 100 mL of double distilled water to form a homogeneous solution to create alkaline reaction conditions. Put a piece of titanium sheet into a polytetrafluoroethylene-lined reactor, add 10mL of prepared NaOH aqueous solution, and then stir until the solution is clear. After min, take out the...

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Abstract

The invention provides a preparation method for a strontium-titanium dioxide / strontium titanate nanometer heterojunction. The method comprises the following steps: by taking TiO2 nanosheet and Sr(NO3)2.8H2O as raw materials, performing hydrothermal reaction in deionized water, thereby acquiring the product. The hydrothermal reaction is performed at 180 DEG C for 120 minutes. The invention also provides a Sr-TiO2 / SrTiO3 nanometer heterojunction prepared according to the method and an application thereof. According to the invention, Sr<2+> is successfully doped into TiO2 / SrTiO3, the separating efficiency of TiO2 photon-generated carrier is increased, the photoelectrochemical properties of TiO2 / SrTiO3 are improved by the doped Sr<2+> and the Sr-TiO2 / SrTiO3 nanometer heterojunction material has an excellent application at the aspect of photocatalytic water splitting.

Description

technical field [0001] The invention relates to the preparation of a doped semiconductor material, in particular to a Sr-TiO 2 / SrTiO 3 Nano-heterojunction and its preparation method. Background technique [0002] One-dimensional nanostructures, due to their interesting properties and unique applications, have always been the subject of intensive research by scholars. TiO 2 As an important transition metal oxide, it has attracted much attention due to its wide application in environmental protection, biomedicine, photoelectric sensor, photocatalysis and other fields. However, the current research on TiO with different shapes and sizes 2 The research and application of materials can no longer meet the ever-expanding requirements in many fields. In order to expand the TiO 2 The properties of TiO are improved by doping or forming heterojunctions with other materials 2 An efficient approach, especially with doping with transition metals and oxides. In recent years many T...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J21/06B01J35/02
CPCB01J23/10B01J35/40
Inventor 卢小泉王秋红贺彩花李洋王彩荷权晶晶
Owner 邳州泰利恒商贸有限公司
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