A kind of heteroatom-doped graphene nanofiber nonwoven fabric and preparation method thereof
A graphene fiber, nanofiber technology, applied in fiber raw material processing, fiber chemical characteristics, synthetic cellulose/non-cellulose material pulp/paper, etc. The effect of flexibility, improving specific surface area, and wide application prospects
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Embodiment 1
[0021] A heteroatom-doped graphene nanofiber nonwoven, its preparation method comprises the following steps:
[0022] (1) Take graphene oxide / water solution with a concentration of 10 mg / mL as the spinning solution, add 10% polyaniline by mass fraction, and use saturated potassium chloride methanol solution as a coagulation bath to perform continuous wet spinning. The obtained composite fibers were dried in an oven with a temperature not higher than 70° C. for 12 hours.
[0023] (2) Disperse the dried composite fibers in a 3:1 mixture of ethanol and water, and use a mixer to pulverize and mix them evenly to obtain a suspension of composite fibers, which is filtered and deposited through a filter, and obtained on the filter The composite fiber non-woven fabric was washed three times with ethanol and dried at 80°C.
[0024] (3) Put the dried composite fiber non-woven fabric in saturated FeCl 3 Soak for 6 hours in the medium, drying to obtain a composite fiber non-woven fabric ...
Embodiment 2
[0027] A heteroatom-doped graphene nanofiber nonwoven, its preparation method comprises the following steps:
[0028] (1) Graphene oxide / N,N-dimethylformamide solution with a concentration of 10 mg / mL was used as the spinning solution, hexachlorocyclotriphosphazene with a mass fraction of 10% was added to it, and ethyl acetate was used as a coagulation bath , for continuous wet spinning. The obtained composite fibers were dried in an oven with a temperature not higher than 70° C. for 12 hours.
[0029] (2) Disperse the dried composite fibers in a 3:1 mixture of ethanol and water, and use a mixer to pulverize and mix them evenly to obtain a suspension of composite fibers, which is filtered and deposited through a filter, and obtained on the filter The composite fiber non-woven fabric was washed three times with ethanol and dried at 80°C.
[0030] (3) Put the dried composite fiber non-woven fabric in saturated FeCl 3 Soak for 6 hours in the medium, drying to obtain a composit...
Embodiment 3
[0034] A heteroatom-doped graphene nanofiber nonwoven, its preparation method comprises the following steps:
[0035] (1) Using graphene oxide / water solution with a concentration of 10 mg / mL as spinning solution, adding methionine with a mass fraction of 5%, saturated potassium chloride methanol solution as a coagulation bath, and performing continuous wet spinning . The obtained composite fibers were dried in an oven with a temperature not higher than 70° C. for 12 hours.
[0036] (2) Disperse the dried composite fibers in a 3:1 mixture of ethanol and water, and use a mixer to pulverize and mix them evenly to obtain a suspension of composite fibers, which is filtered and deposited through a filter, and obtained on the filter The composite fiber non-woven fabric was washed three times with ethanol and dried at 80°C.
[0037] (3) Put the dried composite fiber non-woven fabric in saturated FeCl 3 Soak for 6 hours in the medium, drying to obtain a composite fiber non-woven fab...
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