Silver doped titanium dioxide thin film and preparation method thereof

A titanium dioxide, silver doping technology, applied in the direction of nanostructure manufacturing, manipulating single atoms, nanotechnology, etc.

Inactive Publication Date: 2011-10-19
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method used by the inventor and the Ag/TiO prepared according ...

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  • Silver doped titanium dioxide thin film and preparation method thereof
  • Silver doped titanium dioxide thin film and preparation method thereof
  • Silver doped titanium dioxide thin film and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0026] 1) Preparation of TiO 2 sol, the TiO 2 The sol is composed of tetrabutyl titanate with a mass fraction of 20.00%, hydrochloric acid with a mass fraction of 8.00% and ethanol in the balance;

[0027] 2) with the TiO obtained in step 1) 2 The sol is coated on the surface of a clean glass substrate, and the coating amount is 12mL / m 2 , and then the coated TiO 2 The glass substrate of the sol is calcined at 500°C for 2 hours in a muffle furnace; TiO with a diameter of 20-50nm is obtained on the surface of the glass substrate 2 nanoparticles;

[0028] 3) Preparation of Ag / TiO for solvothermal synthesis 2 Precursor sol, the Ag / TiO 2 The precursor sol is composed of tetrabutyl titanate with a mass fraction of 2.00%, silver nitrate with a mass fraction of 1.00%, and the balance of glacial acetic acid;

[0029] 4) covered with TiO obtained in step 2) 2The Ag / TiO 2 In the precursor sol, seal the container and put it in an oven, heat it at 150°C for 48 hours, take...

Embodiment 2

[0031] 1) Preparation of TiO 2 sol, the TiO 2 The sol is composed of tetraethyl titanate with a mass fraction of 12.50%, hydrochloric acid with a mass fraction of 6.00% and ethanol in the balance;

[0032] 2) with the TiO obtained in step 1) 2 The sol is coated on the surface of a clean silicon wafer substrate, and the coating amount is 20mL / m 2 , and then the coated TiO 2 The silicon substrate of the sol was calcined at 550°C for 3 hours in a muffle furnace; TiO with a diameter of 10-50nm was obtained on the surface of the silicon substrate. 2 nanoparticles;

[0033] 3) Preparation of Ag / TiO for solvothermal synthesis 2 Precursor sol, the Ag / TiO 2 The precursor sol is composed of tetrapropyl titanate with a mass fraction of 1.50%, silver fluoride with a mass fraction of 0.50%, and the balance of glacial acetic acid;

[0034] 4) covered with TiO obtained in step 2) 2 Step 3) Ag / TiO obtained by immersing the nanoparticle silicon wafer substrate into the containe...

Embodiment 3

[0036] 1) Preparation of TiO 2 sol, the TiO 2 The sol is composed of tetrapropyl titanate with a mass fraction of 8.60%, hydrochloric acid with a mass fraction of 2.00% and the rest of ethanol;

[0037] 2) with the TiO obtained in step 1) 2 The sol is coated on the surface of a clean silicon wafer substrate, and the coating amount is 2mL / m 2 , and then the coated TiO 2 The silicon substrate of the sol is calcined in a muffle furnace at 450°C for 1 hour; TiO with a diameter of 10-20nm is obtained on the surface of the silicon substrate. 2 nanoparticles;

[0038] 3) Preparation of Ag / TiO for solvothermal synthesis 2 Precursor sol, the Ag / TiO 2 The precursor sol is composed of tetraethyl titanate with a mass fraction of 0.25%, silver acetate with a mass fraction of 0.05% and the balance of glacial acetic acid;

[0039] 4) covered with TiO obtained in step 2) 2 Step 3) Ag / TiO obtained by immersing the nanoparticle silicon wafer substrate into the container 2 In th...

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Abstract

The invention belongs to the field of a precious metal doped oxide semiconductor thin film material and in particular relates to an Ag/TiO2 thin film material and a preparation method thereof. The invention is mainly characterized in that a sol-gel method and a solvent thermal synthesis method are combined, a TiO2 seed layer is prepared on the surface of a substrate by adopting the sol-gel method, and then a Ag/TiO2 nano slice is grown on the surface of the substrate of the TiO2 seed layer by adopting the solvent thermal synthesis method, thus the Ag/TiO2 thin film material which is composed of the Ag/TiO2 nano slice and is vertically grown on the substrate is obtained. The Ag/TiO2 thin film material provided by the invention has the advantages of titanium dioxide semiconductor material and silver and plays an important role in the fields such as antibacterial materials, solar cells, photocatalysis, deodorization, self cleaning and the like.

Description

technical field [0001] The invention belongs to the field of noble metal-doped oxide semiconductor thin film materials, in particular to an Ag / TiO 2 Thin film materials and methods for their preparation. Background of the invention [0002] Titanium dioxide is a semiconductor material with excellent performance. It has the advantages of non-toxicity, environmental protection, and low price. It is widely used in architectural coatings, photocatalysis, and solar cells. Nano-TiO 2 Photocatalytic antibacterial materials have dual functions of antibacterial and bactericidal, and the bactericidal effect is rapid, the bactericidal power is strong, and it is safe and non-toxic to humans. Its scope of application is limited to a certain extent. Silver-based antibacterial agents mainly include silver-loaded zeolite, silver-loaded zirconium phosphate, silver-loaded calcium phosphate, soluble silver-loaded glass, silver-loaded silica gel, clay ore, activated carbon, etc. They mainly ...

Claims

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Application Information

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IPC IPC(8): B82B1/00B82B3/00
Inventor 周树云章启军孙承华胡秀杰严峻陈萍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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