A kind of method utilizing organic amine reduction to prepare silver nanowire
A technology of silver nanowires and organic amines, applied in the field of inorganic nanomaterials, can solve the problems of complicated operation, high cost of by-product treatment, many steps of polyol method and template method, and achieve simple reaction conditions, short reaction time, and raw materials The effect of less components
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Embodiment 1
[0039] At room temperature of 20°C, the concentration of 0.02mol / L AgNO 3Add 15 mL of aqueous solution, 5 mL of aqueous solution of polyvinylpyrrolidone (molecular weight: 58,000) with a concentration of 0.45 mol / L, 15 mL of aqueous NaCl solution with a concentration of 0.02 mol / L, and 2 mL of ethylenediamine into a 50 mL polytetrafluoroethylene reaction vessel in sequence, and stir with a magnetic force Stir with a mixer to obtain a mixed solution; seal the reaction vessel and heat it in an oven at 140°C for 9 hours to obtain a silver nanowire stock solution; after cooling, dilute the silver nanowire stock solution with ethanol at a dilution ratio of 1:4, and then in 3000 Centrifuge for 15 minutes at a speed of rpm, remove the upper layer solution, then add 30 mL of acetone, centrifuge at a speed of 3000 rpm for 5 minutes, remove the upper layer solution; repeat twice; the lower layer of liquid and solid mixture is dispersed with ethanol, That is, a silver nanowire dispersion...
Embodiment 2
[0041] At room temperature of 20°C, the concentration of 0.02mol / L AgNO 3 Add 15 mL of aqueous solution, 5 mL of aqueous solution of polyvinylpyrrolidone (molecular weight: 58,000) with a concentration of 0.90 mol / L, 15 mL of NaCl aqueous solution with a concentration of 0.01 mol / L, and 4 mL of ethylenediamine into a 50 mL polytetrafluoroethylene reaction kettle in sequence, and stir with a magnetic force Stir with a mixer to obtain a mixed solution; seal the reaction vessel and heat it in an oven at 120°C for 9 hours to obtain a silver nanowire stock solution; after cooling, dilute the silver nanowire stock solution with ethanol at a dilution ratio of 1:4, and then in 3000 Centrifuge for 15 minutes at a speed of rpm, remove the upper layer solution, then add 30 mL of acetone, centrifuge at a speed of 3000 rpm for 5 minutes, remove the upper layer solution; repeat twice; the lower layer of liquid and solid mixture is dispersed with ethanol, That is, a silver nanowire dispersio...
Embodiment 3
[0043] At room temperature of 20°C, the concentration of 0.02mol / L AgNO 3 Add 15 mL of aqueous solution, 5 mL of aqueous solution of polyvinylpyrrolidone (molecular weight: 1300000) with a concentration of 0.45 mol / L, 15 mL of aqueous NaCl solution with a concentration of 0.02 mol / L, 25 μL of aqueous NaBr solution with a concentration of 0.01 mol / L, and 2 mL of ethylenediamine to 50 mL of In a polytetrafluoroethylene reaction kettle, stir with a magnetic stirrer to obtain a mixed solution; seal the reaction kettle and heat it in an oven at 140°C for 9 hours to obtain a silver nanowire stock solution; after cooling, dilute the silver nanowire stock solution with ethanol , the dilution ratio is 1:4, then centrifuge at 3000 rpm for 15 minutes, remove the upper layer solution, then add 30 mL of acetone, centrifuge at 3000 rpm for 5 minutes, remove the upper layer solution; repeat twice Second; the lower liquid and solid mixture is dispersed with ethanol to obtain a silver nanowire...
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