Silver nanoparticle-dispersed cobalt oxide functional thin film material and preparation method

A technology of silver nanoparticles and cobalt tetroxide, applied in the field of photocatalysis

Inactive Publication Date: 2010-07-14
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the plasmon resonance photocatalytic functional thin film material of silver metal particles dispersed cobalt tetroxide

Method used

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  • Silver nanoparticle-dispersed cobalt oxide functional thin film material and preparation method
  • Silver nanoparticle-dispersed cobalt oxide functional thin film material and preparation method
  • Silver nanoparticle-dispersed cobalt oxide functional thin film material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0018] Weigh 0.8731g of cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 0.1699g of silver nitrate (AgNO 3 ) were added to 10ml ethylene glycol monomethyl ether solvent respectively, stirred on a magnetic stirrer for 3 hours, and aged for 6 hours to obtain a Co matrix solution of 0.3mol / L and a Ag matrix solution of 0.1mol / L, and then measure Take 9.9ml of Co matrix solution and 0.1ml of Ag matrix solution, mix the two solutions, stir on a magnetic stirrer for 5 hours, and age for 8 hours to obtain Ag 0.01 / (Co 3 o 4 ) 0.99 precursor solution. Before gluing, the substrate was ultrasonically cleaned in distilled water, ethanol, and acetone, and then put into a drying oven to dry, and then coated with a layer of prepared Ag 0.01 / (Co 3 o 4 ) 0.99 The precursor solution is on the substrate. When homogenizing, run at 300rpm for 3 seconds, and then at 3000rpm for 10 seconds. After homogenizing, perform a thermal decomposition treatment. The thermal decomposition temperature is 3...

Embodiment 2

[0020] Weigh 0.8731g of cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 0.1699g of silver nitrate (AgNO 3 ) were added to 10ml ethylene glycol monomethyl ether solvent respectively, stirred on a magnetic stirrer for 3 hours, and aged for 6 hours to obtain a Co matrix solution of 0.3mol / L and a Ag matrix solution of 0.1mol / L, and then measure Take 9ml of Co matrix solution and 1ml of Ag matrix solution, mix the two solutions, stir on a magnetic stirrer for 5 hours, and age for 8 hours to obtain Ag 0.1 / (Co 3 o 4 ) 0.9 precursor solution. Before gluing, the substrate was ultrasonically cleaned in distilled water, ethanol, and acetone, and then put into a drying oven to dry, and then coated with a layer of prepared Ag 0.1 / (Co 3 o 4 ) 0.9 The precursor solution is on the substrate. When homogenizing, run at 300rpm for 3 seconds, and then at 3000rpm for 10 seconds. After homogenizing, perform a thermal decomposition treatment. The thermal decomposition temperature is 300°C and...

Embodiment 3

[0022] Weigh 0.8731g of cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O) and 0.1699g of silver nitrate (AgNO 3 ) were added to 10ml ethylene glycol monomethyl ether solvent respectively, stirred on a magnetic stirrer for 3 hours, and aged for 6 hours to obtain a Co matrix solution of 0.3mol / L and a Ag matrix solution of 0.1mol / L, and then measure Take 5.5ml of Co matrix solution and 4.5ml of Ag matrix solution, mix the two solutions, stir on a magnetic stirrer for 5 hours, and age for 8 hours to obtain Ag 0.45 / (Co 3 o 4 ) 0.55 precursor solution. Before gluing, the substrate was ultrasonically cleaned in distilled water, ethanol, and acetone, and then put into a drying oven to dry, and then coated with a layer of prepared Ag 0.45 / (Co 3 o 4 ) 0.55 The precursor solution is on the substrate. When homogenizing, run at 300rpm for 3 seconds, and then at 3000rpm for 10 seconds. After homogenizing, perform a thermal decomposition treatment. The thermal decomposition temperature is 3...

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Abstract

The invention relates to a silver nanoparticle-dispersed cobalt oxide functional thin film material and a preparation method, and belongs to the field of photocatalysis. The material is characterized in that the general formula of chemical compositions of the thin film material is Agx / (Co3O4) 1-x, wherein x indicates the mole fraction of constituent element of Ag, and x ranges from 0.01 to 0.85. In the process, cobalt nitrate and silver nitrate are used as raw materials, and ethylene glycol monomethyl ether is used as a solvent; a precursor solution with accurate stoichiometric proportion and uniform compositions is synthesized by chemical solution method, and film is coated on a glass substrate by a spin coater, and finally the Agx / (Co3O4) 1-x composite film is obtained by thermal decomposition and annealing. Silver nanoparticles are uniformly dispersed in a cobalt oxide matrix, and the diameter of the silver particle is 1- 500nm; and the film can observe the plasma resonance absorption peaks of metal particles at a wave band of 350-450nm, and the film has excellent photocatalytic properties under the irradiation of visible light.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and particularly proposes a silver nanoparticle-dispersed cobalt tetroxide plasmon resonance photocatalytic functional thin film material, and relates to the design and preparation process of the nano-metal particle dispersed oxide semiconductor photocatalytic functional thin film material. Background technique [0002] With the outbreak of energy crisis worldwide and the emergence of environmental degradation issues, energy and environment have become two major issues that human beings face and need to be solved urgently in the 21st century. Heterogeneous photocatalysis has unique properties such as deep reaction at room temperature and direct use of solar energy as a light source to drive the reaction. As an ideal environmental pollution control technology and clean energy production technology, it has attracted increasing attention in recent years. [0003] Photocatalytic reactions utilize light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89
Inventor 张波萍王士京李顺赵翠华严丽平
Owner UNIV OF SCI & TECH BEIJING
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