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Preparation and application of plasma gold/zinc oxide composite nanosheet array device

A nanosheet array and plasma technology is applied in the field of preparation of photocatalytic device materials, which can solve the problems of poor stability of Au/ZnO composites, narrow photoresponse range, and high raw material cost, so as to overcome the difficulty of multi-electron reduction and improve the Photocatalytic efficiency and effect of improving chemical stability

Inactive Publication Date: 2015-07-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation and application of plasma gold/zinc oxide composite nanosheet array device
  • Preparation and application of plasma gold/zinc oxide composite nanosheet array device

Examples

Experimental program
Comparison scheme
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 preparation and an application of a plasma gold / zinc oxide composite nanosheet array device. The preparation of the composite nanosheet array device is that gold nanoparticles are deposited on a zinc oxide nanorod array with an in-situ photodeposition method, and the morphology of the zinc oxide array is gradually converted into a nanosheet structure from a nanorod structure. The synthesized plasma gold / zinc oxide composite nanosheet array device is adopted for efficient photocatalytic reduction of carbon dioxide, illumination is carried out for 3 hours, and the yields of methane and ethane reach up to 95%. The preparation method of the device is simple, experimental conditions are easy to control, and the device is low in energy consumption, low in raw material price, suitable for large-batch production, very friendly to environment, high in carbon dioxide reduction rate under sunlight illumination, good in photocatalytic activity and stability and expectedly applied to actual production of solar fuel.

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 Applications(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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