A kind of double nano-enzyme modified carbon fiber composite material, its preparation method and application
A composite material and carbon fiber technology, which is applied in the analysis of materials, material analysis by electromagnetic means, instruments, etc., can solve the problems of large particle size, low catalytic activity, and low dispersion of noble metal particles, and achieve a simple and easy preparation method. High activity, small particle effect
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Embodiment 1
[0056] (1) Select ionic liquid 1-butyl-3-methylimidazole trifluoromethanesulfonate to prepare a graphene quantum dot-ionic liquid dispersion with a concentration of 10 mg / ml: 30 mg of dried graphene quantum dots Mix evenly with 3ml of 1-butyl-3-methylimidazolium trifluoromethanesulfonate by ultrasonic method, and then place the mixture in a vacuum oven at 30°C for 3 days to remove moisture.
[0057] (2) Activation of carbon fibers: The carbon fibers were ultrasonically cleaned three times with acetone, ethanol and deionized water respectively, and then dried. The dried carbon fibers were soaked in a hydrogen peroxide-ethanol mixed solution (volume ratio 1:1) in an oven at 60°C. ), soak for 48 hours, and change the mixed solution every 24 hours, soak and wash with deionized water, and freeze-dry to obtain activated carbon fibers.
[0058] (3) Electrodeposition of graphene quantum dots: the activated carbon fiber is used as a working electrode, the platinum mesh electrode is use...
Embodiment 2
[0081] Include the following steps:
[0082] (1) select ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate for use, prepare the graphene quantum dot-ionic liquid dispersion liquid that concentration is 5mg / ml: the graphene quantum dot that 15mg has dried and 3ml of 1-ethyl-3-methylimidazolium tetrafluoroborate was mixed uniformly by ultrasonic method, and then the mixture was placed in a vacuum oven at 30°C for 3 days to remove the moisture.
[0083] (2) Activation of carbon fibers: The carbon fibers were ultrasonically cleaned three times with acetone, ethanol and deionized water respectively, and then dried. The dried carbon fibers were soaked in a hydrogen peroxide-ethanol mixed solution (volume ratio 1:1) in an oven at 60°C. ), soak for 48 hours, and change the mixed solution every 24 hours, soak and wash with deionized water, and freeze-dry to obtain activated carbon fibers.
[0084] (3) Electrodeposition of graphene quantum dots: the activated carbon fiber is us...
Embodiment 3
[0088] Include the following steps:
[0089] (1) select ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate for use, and prepare the graphene quantum dot-ionic liquid dispersion liquid that concentration is 15mg / ml: the graphene quantum dot that 45mg has been dried is mixed with 3ml of 1-butyl-3-methylimidazolium tetrafluoroborate was mixed uniformly by ultrasonic method, and then the mixture was placed in a vacuum oven at 30°C for 3 days to remove the moisture.
[0090] (2) Activation of carbon fibers: The carbon fibers were ultrasonically cleaned three times with acetone, ethanol and deionized water respectively, and then dried. The dried carbon fibers were soaked in a hydrogen peroxide-ethanol mixed solution (volume ratio 1:1) in an oven at 60°C. ), soak for 48 hours, and change the mixed solution every 24 hours, soak and wash with deionized water, and freeze-dry to obtain activated carbon fibers.
[0091] (3) Electrodeposition of graphene quantum dots: the activate...
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