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One-pot cellulose hydrothermal synthesis method for preparing high-draw-ratio silver nanowire

A hydrothermal synthesis method, a technology of silver nanowires, applied in the directions of single crystal growth, crystal growth, single crystal growth, etc., to achieve the effects of simple operation, high yield and uniform size

Inactive Publication Date: 2013-10-23
PUTIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the help of a hydrothermal reaction system, the hydrolysis of lignocellulose and the reduction process of silver nanowires are combined, and the reduction of cellulose hydrolyzate (sugar and aldehyde) is used to prepare silver nanowires with uniform size and high aspect ratio. There is no relevant report yet

Method used

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  • One-pot cellulose hydrothermal synthesis method for preparing high-draw-ratio silver nanowire

Examples

Experimental program
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Effect test

Embodiment 2

[0021] Measure 0.035g Ag 2 SO 4 , 0.45g of filter paper (cellulose), 8mL of CTAB solution (0.1mol / L) and 25ml of deionized water were added to 50mL of polytetrafluoroethylene lining, and fully stirred to make them evenly mixed. Then put the lining into the autoclave and put it in an oven or muffle furnace, heat it at 190°C for 20h, and then let it cool to room temperature; centrifuge the reacted product, and observe the reaction product with a scanning electron microscope (SEM) , the average diameter of the obtained silver nanowires is 100-200nm, and the aspect ratio exceeds 200.

Embodiment 3

[0023] Measure 0.035g Ag 2 SO 4 , 0.40g of soybean shell (cellulose), 9mL of CTAB solution (0.1mol / L) and 25ml of deionized water were added to 50mL of polytetrafluoroethylene lining, and stirred thoroughly to make them evenly mixed. Then put the lining into the autoclave and put it in an oven or muffle furnace, heat it at 180°C for 20h, and then let it cool to room temperature; centrifuge the reacted product, and observe the reaction product with a scanning electron microscope (SEM) , the average diameter of the obtained silver nanowires is 110-250nm, and the aspect ratio exceeds 200.

Embodiment 4

[0025] Measure 0.03g Ag 2 SO 4 , 0.40g of soybean shell (cellulose), 6mL of CTAB solution (0.1mol / L) and 25ml of deionized water were added to 50mL of polytetrafluoroethylene lining, and fully stirred to make them evenly mixed. Then put the lining into the autoclave and put it in an oven or muffle furnace, heat it at 200°C for 20h, and then let it cool to room temperature; centrifuge the reacted product, and observe the reaction product with a scanning electron microscope (SEM) , the average diameter of the obtained silver nanowires is 110-300nm, and the aspect ratio exceeds 200.

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Abstract

The invention discloses a one-pot cellulose hydrothermal synthesis method for preparing a high-draw-ratio silver nanowire. The method comprises the following steps: adding cellulose, silver sulfate, cetyl trimethyl ammonium bromide and deionized water into a polytetrafluoroethylene liner at one time, and performing full stirring and uniform mixing; filling the liner into a high-pressure kettle, and putting the liner into an oven or a muffle furnace; heating for 10 to 24 h at the temperature of 180 to 200 DEG C, and taking the liner out for natural cooling; and performing centrifugal separation or suction filtration separation on a cooled product to obtain the high-draw-ratio silver nanowire. By using renewable biomass resources, the method is easy to operate; the silver nanowire is generated by one-pot; and the average diameter of the obtained silver nanowire is 90 to 350 nm, the draw ratio is more than 200, and the silver nanowire is uniform in size and high in yield.

Description

technical field [0001] The invention belongs to the technical field of preparation of one-dimensional metal nanomaterials, and in particular relates to a cellulose hydrothermal synthesis method for preparing silver nanowires with high aspect ratio in one pot. Background technique [0002] Silver nanowire materials with uniform size and high aspect ratio have attracted much attention because of their excellent thermal conductivity, light transmission, flex resistance, catalytic properties, antibacterial properties, and surface plasmon resonance effects. focus on. At present, the preparation methods of silver nanowires mainly include physical method and chemical method. Among them, physical methods mainly include evaporation condensation method, ion sputtering method and mechanical grinding method, etc.; chemical methods mainly include light or heat induction method, template method, chemical vapor deposition method, chemical reduction method and microwave radiation method, e...

Claims

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Application Information

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IPC IPC(8): B22F9/24C30B29/02C30B7/10
Inventor 李先学陈彰旭吴丽仁
Owner PUTIAN UNIV
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