Method for preparing graphene/nickel nanocomposite material by utilizing gamma ray
A nanocomposite material and gamma ray technology are applied in the field of preparing graphene/nickel nanocomposite materials by using gamma rays, which can solve the problems of high environmental damage and high cost of graphene-nickel nanocomposite materials, and achieve environmental harm. Small, low cost, strong controllability
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specific Embodiment approach 1
[0015] Specific embodiment one: a kind of method utilizing gamma ray of the present embodiment to prepare graphene / nickel nanocomposite material is realized according to the following steps:
[0016] 1. Preparation of graphite oxide: the modified Hummer method is used to prepare graphite oxide by oxidation reaction with natural flake graphite as raw material;
[0017] Two, the graphite oxide prepared in step 1 is mixed with nickel salt, and then ultrasonically dispersed in deionized water to obtain a mixed solution; wherein, the mass ratio of graphite oxide and nickel salt in the mixed solution is 1: (1~4), and in the mixed solution The concentration of graphite oxide is 3-7g / L;
[0018] 3. Add isopropanol dropwise to the mixed solution, and then react under gamma ray irradiation to obtain the product; wherein, the volume ratio of the mixed solution to isopropanol is 1: (0.05~0.4), and the gamma The radiation dose is 20-80Gy / min, and the irradiation time is 4-8h;
[0019] 4....
specific Embodiment approach 2
[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is: adopt the improved Hummer method in the step one to carry out oxidation reaction and prepare the method for graphite oxide with natural flake graphite as raw material:
[0025] 1. Add 150ml of concentrated sulfuric acid with a mass concentration of 98% to the three-necked bottle, then add 6g of natural flake graphite to the three-necked bottle under an ice-water bath, stir and add 19.5g KMnO 4 , and then control the reaction temperature at 0-20°C for 1 hour, then react at 0-35°C for 2 hours to obtain a reaction solution;
[0026] 2. Transfer the reaction solution into 500ml of distilled water, react at 60°C for 1 hour, then transfer it to a mixture of 1400ml of distilled water and 100ml of 3% hydrogen peroxide, continue stirring for 24 hours, filter, wash, and dry at 60°C to complete graphite oxide preparation. Other parameters and steps are the same as in the first embodime...
specific Embodiment approach 3
[0027] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the nickel salt in step 2 is nickel acetate or nickel chloride. Other parameters and steps are the same as those in Embodiment 1 or Embodiment 2.
[0028] Verify beneficial effect of the present invention by following test:
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