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TiO2 photoelectric material having different nano morphologies and prepared by utilizing one-step hydrothermal method, and preparation method and application of TiO2 photoelectric material

A photoelectric material and nano-morphology technology, applied in photovoltaic power generation, circuits, capacitors, etc., can solve the problems of high carrier recombination rate, limited application, large band gap, etc., and achieve cheap and easy-to-obtain raw materials and simple operation steps Effect

Inactive Publication Date: 2020-02-21
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has disadvantages such as high carrier recombination rate and large band gap, which make its photoelectric conversion performance to be improved and limit its application under visible light.

Method used

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  • TiO2 photoelectric material having different nano morphologies and prepared by utilizing one-step hydrothermal method, and preparation method and application of TiO2 photoelectric material
  • TiO2 photoelectric material having different nano morphologies and prepared by utilizing one-step hydrothermal method, and preparation method and application of TiO2 photoelectric material
  • TiO2 photoelectric material having different nano morphologies and prepared by utilizing one-step hydrothermal method, and preparation method and application of TiO2 photoelectric material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] TiO with nanoparticle morphology for enhanced photoelectrochemical conversion performance 2 Preparation of photoanode:

[0036] 1) Preparation of FTO conductive glass: first cut the FTO glass into 20×10mm 2 size, and then ultrasonically cleaned in analytical grade acetone for 5 minutes, and then cleaned in deionized water for 5 minutes, and then the FTO glass was dried for use.

[0037] 2) Preparation of hydrothermal solution: Add 0.708g of potassium titanium oxalate (PTO) into 30-20mL (preferably 25ml) deionized water, stir for 15 minutes under magnetic stirring, then add 10-20mL (preferably 15ml) a Stirring of diethylene glycol (DEG) was continued for 15 minutes, keeping the total volume of the hydrothermal solution at 40 mL.

[0038] 3) TiO with special nano-morphology 2 Preparation of the photoanode: place the FTO conductive glass in step 1) in the liner of the autoclave, with the conductive side facing down and placed at an angle of 45° to the wall of the autocl...

Embodiment 2

[0046] TiO with nanoturf morphology for enhanced photoelectrochemical conversion performance 2 Preparation of photoanode:

[0047] 1) Preparation of FTO conductive glass: first cut the FTO glass into 20×10mm 2 size, and then ultrasonically cleaned in analytical grade acetone for 5 minutes, and then cleaned in deionized water for 5 minutes, and then the FTO glass was dried for use.

[0048] 2) Preparation of hydrothermal solution: Add 0.708g of potassium titanium oxalate (PTO) into 15-8mL (preferably 10ml) deionized water, stir for 15 minutes under magnetic stirring, then add 25-32mL (preferably 30ml) a Stirring of diethylene glycol (DEG) was continued for 15 minutes, keeping the total volume of the hydrothermal solution at 40 mL.

[0049] 3) TiO with special nano-morphology 2 Preparation of the photoanode: place the FTO conductive glass in step 1) in the liner of the autoclave, with the conductive side facing down and placed at an angle of 45° to the wall of the autoclave. ...

Embodiment 3

[0057] TiO with nanotree morphology for enhanced photoelectrochemical conversion performance 2 Preparation of photoanode:

[0058] 1) Preparation of FTO conductive glass: first cut the FTO glass into 20×10mm2 size, and then ultrasonically cleaned in analytical grade acetone for 5 minutes, and then cleaned in deionized water for 5 minutes, and then the FTO glass was dried for use.

[0059] 2) Preparation of hydrothermal solution: Add 0.708 g of potassium titanium oxalate (PTO) into 5 mL of deionized water, stir for 15 minutes under magnetic stirring, then add 35 mL of diethylene glycol (DEG) and continue stirring for 15 minutes , making the total volume of the hydrothermal solution 40 mL.

[0060] 3) TiO with special nano-morphology 2 Preparation of the photoanode: place the FTO conductive glass in step 1) in the liner of the autoclave, with the conductive side facing down and placed at an angle of 45° to the wall of the autoclave. The solution obtained in step 2) was added ...

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Abstract

The invention belongs to the field of improvement of photoelectrochemical conversion performance of solar energy, and particularly relates to a TiO2 photoelectric material having different nano morphologies and prepared by utilizing a one-step hydrothermal method, and a preparation method and an application of the TiO2 photoelectric material. According to the TiO2 photoelectric material, a solventratio (H2O:DEG) in a hydrothermal process is adjusted, and the TiO2 photoelectric material having different morphologies and crystal structures directly grows on FTO conductive glass by the one-stephydrothermal method. The experimental operation steps are simple, the raw materials are cheap and easy to obtain, the morphology can be regulated and controlled, and the method has important significance in preparing the nano material with high photoelectrochemical conversion performance.

Description

technical field [0001] The invention belongs to the field of improving the photoelectric chemical conversion performance of solar energy, and specifically relates to a method for preparing TiO with different nanometer shapes by using a one-step hydrothermal method. 2 Optoelectronic materials and their preparation methods and applications. Background technique [0002] In order to meet the growing demand for clean energy, it is necessary to use photoelectric conversion materials to harvest solar photons, TiO 2 Because of its environmental friendliness, cheap and easy-to-obtain characteristics, excellent chemical stability and suitable energy band position, it has been widely studied in the field of photoelectrochemistry. However, it has disadvantages such as high carrier recombination rate and large band gap, which make its photoelectric conversion performance to be improved and limit its application under visible light. [0003] For TiO 2 Due to the disadvantage of high c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C03C17/23H01G9/04H01G9/20
CPCC01G23/053C01P2002/72C01P2004/03C01P2004/61C01P2004/62C03C17/23H01G9/2031Y02E10/542
Inventor 陈卓元姜旭宏孙萌萌荆江平
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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