A kind of hollow solid-walled gold/gold-silver nanotube with high aspect ratio and preparation method thereof
A high aspect ratio, silver nanowire technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of high consumption of solid structures, easy cracking of nanotubes, limited application range, etc. problems, to achieve the effect of easy operation of product component content, high wear resistance and strong controllability
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Embodiment 1
[0031] AuCl was washed three times with chloroform to remove a small amount of Au(III), then dried under vacuum, and finally dissolved in an appropriate amount of DMF to prepare a solution with a concentration of 10 mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL of PVP (1mg / mL) aqueous solution, add a certain amount of solubilizing agent, mix evenly with magnetic stirring, heat to 120°C, and stabilize for 10min. Then take 1 mL of the above-mentioned treated AuCl solution in DMF, inject it into the solution with a syringe pump under the condition of magnetic stirring, the injection speed is 45 mL / h, and then heat for 10 min until the color of the reaction solution tends to be stable. After cooling to room temperature, the obtained sample was centrifuged, and then washed several times with deionized water to remove PVP and NaCl, etc., to obtain hollow solid-walled gold-silver alloy nanotubes, wherein the mass fraction of gold was a...
Embodiment 2
[0033] AuCl was washed three times with chloroform to remove a small amount of Au(III), then dried under vacuum, and finally dissolved in an appropriate amount of DMF to prepare a solution with a concentration of 10 mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL of PVP (1mg / mL) aqueous solution, add a certain amount of solubilizing agent, mix evenly with magnetic stirring, heat to 120°C, and stabilize for 10min. Then take 10 mL of the above-mentioned treated Aucl in DMF, inject it into the solution with a dual-channel syringe pump under the condition of magnetic stirring, the injection speed is 45Ml / h, and then heat for 10 min until the color of the reaction solution tends to be stable. After being cooled to room temperature, the obtained sample was centrifuged, and then rinsed several times with deionized water to remove PVP and CTAB, etc., to obtain hollow solid-walled gold-silver bimetallic nanotubes, wherein the mass fraction...
Embodiment 3
[0035] Aucl was washed three times with chloroform to remove a small amount of Au(III), then dried under vacuum, and finally dissolved in an appropriate amount of DMF to prepare a solution with a concentration of 10 mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL of PVP (1mg / mL) aqueous solution, add a certain amount of solubilizer, mix evenly with magnetic stirring, and then heat to 120°C to stabilize for 10min. Then take 22 mL of the above-mentioned treated AuCl solution in DMF, inject it into the solution with a dual-channel syringe pump under the condition of magnetic stirring, the injection speed is 45 mL / h, and then heat for 10 min until the color of the reaction solution tends to be stable. After cooling to room temperature, the obtained sample was centrifuged, and then washed several times with deionized water to remove PVP and NaCl, etc., to obtain hollow solid-walled gold nanotubes. Wherein the mass fraction of gold is ...
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