Method for direct growth of porous carbon nanotubes on nano-porous copper
A technology of nanoporous copper and porous carbon, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of multiple by-products, complicated operation, low yield, etc., and achieve simple preparation process and equipment requirements, high purity High, high yield effect
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Embodiment 1
[0017] Cu with a length of 20 mm, a width of 5 mm, and a thickness of 30 μm 30 mn 70 After the alloy strip is cleaned and dried with deionized water, it is placed in a dilute hydrochloric acid solution with a concentration of 0.02mol / L for dealloying corrosion, and the sample is taken out when there are basically no bubbles overflowing;
[0018] Wash with deionized water until neutral, and the number of cleanings is 3 times, then put the sample into a vacuum drying oven and dry at room temperature for 3 hours to obtain a nanoporous copper (NPC) precursor with a microstructure such as figure 2 shown in;
[0019] Put the obtained nanoporous copper catalyst precursor into a quartz boat, place it in the constant temperature zone of the tube furnace, and raise the temperature to 630°C at 10°C / min under an argon atmosphere with a flow rate of 100sccm;
[0020] Then pass hydrogen reduction annealing at a flow rate of 100 sccm for 0.5 h;
[0021] Then stop feeding hydrogen, and th...
Embodiment 2
[0026] Cu with a length of 20 mm, a width of 5 mm, and a thickness of 30 μm 30 mn 70 After the alloy strip is cleaned and dried with deionized water, it is placed in a dilute hydrochloric acid solution with a concentration of 0.02mol / L for dealloying corrosion, and the sample is taken out when there are basically no bubbles overflowing;
[0027] Wash with deionized water to neutrality, and the number of cleanings is 5 times, then put the sample into a vacuum drying oven and dry at room temperature for 3 hours to obtain a nanoporous copper catalyst precursor (NPC);
[0028] Put the obtained nanoporous copper catalyst precursor into a quartz boat, place it in the constant temperature zone of the tube furnace, and raise the temperature to 630°C at 10°C / min under an argon atmosphere with a flow rate of 100sccm;
[0029] Then pass hydrogen reduction annealing at a flow rate of 100 sccm for 0.5 h;
[0030] Afterwards, stop feeding hydrogen, and feed a mixture of acetylene and 200 ...
Embodiment 3
[0034] Cu with a length of 20 mm, a width of 5 mm, and a thickness of 30 μm 30 mn 70 After the alloy strip is cleaned and dried with deionized water, it is placed in a dilute hydrochloric acid solution with a concentration of 0.02mol / L for dealloying corrosion, and the sample is taken out when there are basically no bubbles overflowing;
[0035] Wash with deionized water to neutrality, and the number of cleanings is 4 times, and then put the sample into a vacuum drying oven to dry at room temperature for 3 hours to obtain a nanoporous copper catalyst precursor (NPC);
[0036] Put the obtained nanoporous copper catalyst precursor into a quartz boat, place it in the constant temperature zone of the tube furnace, and raise the temperature to 650°C at 10°C / min under an argon atmosphere with a flow rate of 100sccm;
[0037] Then pass hydrogen reduction annealing at a flow rate of 100 sccm for 0.5 h;
[0038] Afterwards, stop feeding the hydrogen, and feed the mixed gas of acetyle...
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