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Fabrication and Application of Plasmonic Au/ZnO Composite Nanosheet Array Devices

A nanosheet array and plasma technology, applied in the field of preparation of photocatalytic device materials, can solve the problems of poor stability of Au/ZnO complex, high cost of raw materials, narrow photoresponse range, etc., to overcome the difficulty of multi-electron reduction, Effect of improving chemical stability and improving photocatalytic efficiency

Inactive Publication Date: 2018-02-02
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the technologies reported above, there are problems such as complicated preparation process, poor stability of the prepared Au / ZnO composite system, narrow photoresponse range, uneven size of gold nanoparticles and high cost of raw materials.

Method used

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  • Fabrication and Application of Plasmonic Au/ZnO Composite Nanosheet Array Devices
  • Fabrication and Application of Plasmonic Au/ZnO Composite Nanosheet Array Devices

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Weigh 0.06 g of zinc acetate in 60 ml of ethanol solution and keep stirring for 30 minutes to fully dissolve it. The cleaned conductive glass (FTO) was dipped in the above solution for 10 seconds with the conductive side facing down, then taken out and blown dry with nitrogen. Repeat the dipping-nitrogen drying step 5 times. Then transfer the impregnated conductive glass to a muffle furnace, control the heating rate, and bake at a rate of 2°C / min at 350°C for 30 minutes in an air atmosphere to obtain a conductive glass evenly covered with zinc oxide seeds.

[0033] Weigh 0.71 g of zinc nitrate hexahydrate (in 30 ml of deionized water, stir until clear and transparent to obtain solution A, and weigh 0.33 g of hexamethylenetetramine in 30 ml of deionized water, stir until clear and transparent to obtain solution A B. Slowly pour the two solutions of A and B into a 100 ml polytetrafluoroethylene autoclave while stirring, and continue to stir for 10 minutes after the dropw...

Embodiment 2

[0037] Weigh 0.06 g of zinc acetate in 30 ml of ethanol solution and keep stirring for 30 minutes to fully dissolve it. The cleaned conductive glass (FTO) was dipped in the above solution for 20 seconds with the conductive side facing down, then taken out and blown dry with nitrogen. Repeat the dipping-nitrogen drying step 10 times. Then transfer the impregnated conductive glass to a muffle furnace, control the heating rate, and bake at a rate of 10°C / min in an air atmosphere at 500°C for 50 minutes to obtain a conductive glass evenly covered with zinc oxide seeds.

[0038] Weigh 0.71 g of zinc nitrate hexahydrate in 30 ml of deionized water, stir until clear and transparent to obtain solution A, and weigh 0.33 g of hexamethylenetetramine in 30 ml of deionized water, stir until clear and transparent to obtain solution B . Slowly pour the two solutions of A and B into a 100 ml polytetrafluoroethylene autoclave while stirring, and continue to stir for 10 minutes after the drop...

Embodiment 3

[0042] Weigh 0.06 g of zinc acetate in 30 ml of ethanol solution and keep stirring for 30 minutes to fully dissolve it. The cleaned conductive glass (FTO) was dipped in the above solution for 20 seconds with the conductive side facing down, then taken out and blown dry with nitrogen. Repeat the dipping-nitrogen drying step 10 times. Then transfer the impregnated conductive glass to a muffle furnace, control the heating rate, and bake at a rate of 10°C / min in an air atmosphere at 500°C for 50 minutes to obtain a conductive glass evenly covered with zinc oxide seeds.

[0043] Weigh 0.71 g of zinc nitrate hexahydrate (in 30 ml of deionized water, stir until clear and transparent to obtain solution A, and weigh 0.33 g of hexamethylenetetramine in 30 ml of deionized water, stir until clear and transparent to obtain solution A B. Slowly pour the two solutions of A and B into a 100 ml polytetrafluoroethylene autoclave while stirring, and continue to stir for 10 minutes after the dro...

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Abstract

The invention discloses the preparation and application of a plasma gold / zinc oxide composite nano-sheet array device. The composite nanosheet device is prepared by depositing gold nanoparticles on the zinc oxide nanorod array by in-situ photodeposition. The morphology of the zinc oxide array is gradually transformed from the nanorod to the nanosheet structure. The as-synthesized plasmonic gold / zinc oxide composite nanosheet array device was used to efficiently photocatalyze the reduction of carbon dioxide, and the yield of methane and ethane was as high as 95% under illumination for 3 hours. The device is simple in fabrication method, easy to control experimental conditions, low in energy consumption, low in raw materials, can be used for mass production, and is very environmentally friendly. Under sunlight irradiation, the carbon dioxide reduction rate is high, and the photocatalytic activity and stability are good. , which is expected to be applied to the actual production of solar fuels.

Description

technical field [0001] The invention belongs to the field of preparation of photocatalytic device materials, and in particular relates to the preparation and application of a plasma gold / zinc oxide composite nanosheet array device. Background technique [0002] As we all know, carbon dioxide is a greenhouse gas, and the increase in its emission is a key factor leading to global warming. Therefore, it is imminent to reduce carbon dioxide emissions and reduce the greenhouse effect by developing new clean energy or developing efficient carbon dioxide conversion and treatment technologies. At present, carbon dioxide fixation and conversion technologies include dissolution method, physical adsorption method, chemical absorption method, biological fixation method and membrane separation method, but these existing technologies generally have problems such as low efficiency and harsh reaction conditions. Compared with these technologies, the photocatalytic reduction technology has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/66C07C9/04C07C9/06C07C1/02
Inventor 龙金林何沙王绪绪林华香张子重
Owner FUZHOU UNIV
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