A kind of preparation method of graphene nanobelt
A graphene nanoribbon and carbon nanotube technology, which is applied in the synthesis field of new carbon materials, can solve the problems of difficulty in controlling the size of graphene nanoribbons, low yield, etc., and achieves green and pollution-free preparation, high production efficiency, and preparation process time. short effect
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Embodiment 1
[0028] A kind of preparation method of graphene nanobelt provided by the invention comprises the following steps:
[0029] (1) Add 1g of multi-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 20ml of 0.5mol / L hydrochloric acid and stir for 30min, after filtering, add 200ml of 0.1mol / L sodium hydroxide solution and stir for 30min, and the filtered filtrate It can be used repeatedly to remove impurities and oil, and at the same time slightly corrode the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in ethanol and acetone in turn and treat with 200w ultrasonic wave for 30min, then use ethanol Soak and sonicate with 200w ultrasonic wave for 30min, filter and soak with acetone and treat with 200w ultrasonic wave for 30min, then filter and dry at 80°C for 6 hours in a vacuum drying oven to obtain pretreated carbon nanotubes;
[0030] (2) under nitrogen protection, the pretreated carbon nano...
Embodiment 2
[0033] A preparation method of graphene nanoribbons, comprising the following steps:
[0034] (1) Add 1g of single-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 50ml of 1mol / L nitric acid and stir for 10min, add 100ml of 0.5mol / L potassium hydroxide solution after filtration and stir for 15min, the filtered filtrate can be Repeated use to remove impurities and oil, while slightly corroding the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in methanol and acetone respectively and treat with 400w ultrasonic wave for 10min, after filtration, in drying in a vacuum oven at 90°C for 5 hours to obtain pretreated carbon nanotubes;
[0035] (2) under argon protection, the pretreated carbon nanotubes obtained in step (1) (bulk density is 0.03g / cm 3 ) placed in a muffle furnace, heated to 1100°C at a rate of 100°C / min, and then held for 5 minutes to heat the carbon nanotubes evenly, and then...
Embodiment 3
[0038] A preparation method of graphene nanoribbons, comprising the following steps:
[0039] (1) Add 1g of double-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 100ml of 0.8mol / L sulfuric acid and stir for 20min, after filtering, add 20ml of 0.5mol / L sodium hydroxide solution and stir for 25min, and the filtered filtrate It can be reused to remove impurities and oil, and at the same time slightly corrode the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in ethanol and acetone respectively and use 300w ultrasonic ultrasonic treatment for 20min, after filtration drying in a vacuum oven at 100°C for 4 hours to obtain pretreated carbon nanotubes;
[0040] (2) under nitrogen protection, the pretreated carbon nanotubes obtained in step (1) (bulk density is 0.04g / cm 3 ) placed in a muffle furnace, heated to 1200°C at a rate of 80°C / min, and then held for 5 minutes to heat the carbon nano...
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