A method for in-situ preparation of copper nanowires in microchannels
A copper nanowire, in-situ preparation technology, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve problems such as wide range, unclear interface, and no nanowire preparation
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Embodiment 1
[0019] Embodiment 1: the in-situ preparation method of copper nanowire in a kind of microchannel, it comprises the following steps:
[0020] 1) Preparation of reaction solution: Dissolve copper oleate in oleic acid at room temperature to make an oleic acid solution of copper oleate with a concentration of 1.7 mmol / L, which is the copper-containing oil phase solution; dissolve ascorbic acid in Ionized water is made into an aqueous solution of ascorbic acid with a concentration of 1 mol / L, which is a reducing aqueous phase solution;
[0021] 2) Select the microchannel and pretreat the wall surface of the microchannel: the microchannel used is the “Y” microchannel on the microfluidic chip, the width of the two inlet channels is 120 µm, the width of the main channel is 240 µm, and the channel The height of the channel is 10 μm, and the channel wall is PDMS; at room temperature, oleic acid is passed into the main channel for 3 hours, and the channel wall becomes an lipophilic surfa...
Embodiment 2
[0026] Embodiment 2: a kind of in-situ preparation method of copper nanowire in microchannel, it comprises the following steps:
[0027] 1) Preparation of reaction solution: 60 OUnder C, dissolve copper oleate in oleic acid to make an oleic acid solution of copper oleate with a concentration of 1.7 mmol / L, which is an oil phase solution containing copper; dissolve ascorbic acid in deionized water to make a concentration of The aqueous solution of 1 mol / L ascorbic acid is the reducing aqueous phase solution;
[0028] 2) Select the microchannel and pretreat the wall surface of the microchannel: the microchannel used is the “Y” microchannel on the microfluidic chip, the width of the two inlet channels is 120 µm, the width of the main channel is 240 µm, and the channel The height of the channel is 10 µm, and the channel wall is PDMS; 60 O Under C, oleic acid is passed into the main channel, and kept for 3 hours, the channel wall becomes an lipophilic surface;
[0029] 3) Format...
Embodiment 3
[0032] Embodiment 3: a kind of in-situ preparation method of copper nanowire in microchannel, it comprises the following steps:
[0033] 1) Preparation of reaction solution: Dissolve copper oleate in oleic acid at room temperature to make an oleic acid solution of copper oleate with a concentration of 1.7 mmol / L, which is the copper-containing oil phase solution; sodium hypophosphite Dissolve in deionized water to make an aqueous solution of sodium hypophosphite with a concentration of 1 mol / L, which is a reducing aqueous phase solution;
[0034] 2) Select the microchannel and pretreat the wall of the microchannel: the microchannel used is a "Y"-shaped capillary, the diameter of the two inlet channels is 50 µm, and the oil phase solution and the water phase solution are respectively passed through; the diameter of the main channel is 100 µm , the channel walls are all glass; at room temperature, oleic acid is passed into the main channel, and kept for 3 hours, the channel wall...
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