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A strontium-titanium dioxide/strontium titanate nano-heterojunction and its preparation method and application

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

Active Publication Date: 2019-10-15
邳州泰利恒商贸有限公司
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  • Summary
  • 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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  • A strontium-titanium dioxide/strontium titanate nano-heterojunction and its preparation method and application
  • A strontium-titanium dioxide/strontium titanate nano-heterojunction and its preparation method and application
  • A strontium-titanium dioxide/strontium titanate nano-heterojunction and its preparation method and application

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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 of strontium-titanium dioxide / strontium titanate nanoheterojunction, which is based on TiO 2 Nanosheets and Sr(NO 3 ) 2 ·8H 2 O is a raw material obtained after a hydrothermal reaction in deionized water; the conditions of the hydrothermal reaction are 180°C and 120 minutes. The invention also provides Sr-TiO prepared by the method 2 / SrTiO 3 Nanoheterojunctions and their applications. The present invention successfully combines Sr 2+ Incorporated TiO 2 / SrTiO 3 in, improved TiO 2 The separation efficiency of photogenerated carriers, Sr 2+ Doping improves TiO 2 / SrTiO 3 Photoelectrochemical properties of Sr‑TiO 2 / SrTiO 3 Nanosheet heterojunction materials have good applications in 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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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10B01J21/06B01J35/02B01J35/00
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