Preparation of a zinc oxide nanorod-graphene nanosheet composite material
A technology of zinc oxide nanorods and graphene nanosheets, which is applied in nanotechnology, analytical materials, nanotechnology, etc., can solve problems such as detection interference and complex blood components, achieve low cost, simple and feasible process, and improve electrochemical performance Effect
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specific Embodiment approach 1
[0031] Specific embodiment one: the preparation method of a kind of zinc oxide nanorod-graphene nano sheet in the present embodiment, specifically carry out according to the following steps:
[0032] 1. Preparation of ZnO nanorods by hydrothermal synthesis
[0033] Prepare 0.03mol / L~0.07mol / L zinc nitrate [Zn(NO 3 ) 2 ·6H 2 O] solution, 0.03mol / L~0.07mol / L hexamethyltetramine[(CH 2 ) 6 N 4 , HMT] solution and 0.36 mol / L ~ 1.2 mol / L sodium hydroxide solution, mix the three solutions on a magnetic stirrer for 3 ~ 5 minutes, then transfer the mixture into a beaker for 30 minutes of ultrasonic treatment. The ultrasonically treated solution was poured into a reactor lined with polytetrafluoroethylene for hydrothermal reaction. Heating was carried out in a vacuum oven at a temperature of 100 °C. After the heating finishes, take out the reaction still and open the still after cooling to room temperature naturally. The reaction product was subjected to ultrasonic treatment for...
specific Embodiment approach 2
[0045] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the template nickel foam is placed in the center of the quartz tube furnace, and it starts from room temperature under the protection of argon and hydrogen, and heats it at 20 ℃·min -1 ~40℃·min -1 Raise the temperature to 1010°C, keep it warm for 30min~60min, then continuously feed methane gas into the quartz tube furnace at a rate of 10sccm for 10min, then turn the quartz tube furnace at 80°C·min -1 ~100°C·min -1 The speed is rapidly cooled to room temperature, and the nickel foam covered by graphene is obtained at this time; the density of the nickel foam described in step 2 1) is 420g / m 2 ~440g / m 2 , the thickness is 1.6mm~2.0mm; the flow rate of argon gas described in step 2 1) is 480 sccm, the flow rate of hydrogen gas is 180 sccm; the flow rate of argon gas described in step 2 1) is 480 sccm, the flow rate of hydrogen gas It is 180 sccm; Others are the same as in Emb...
specific Embodiment approach 3
[0046] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: Step 2 2) Step 2 1) to obtain nickel foam wrapped in graphene, and then cut the prepared sample into 1cm*1.5cm For the sample, add 4wt% PMMA (4g PMMA dissolved in 100g ethyl lactate) dropwise on the surface of the sample, and cure at 180°C for 30min. This process is to protect the three-dimensional porous structure of the sample. Then put the sample into 3% hydrochloric acid solution and react at 90°C for 5~10h to remove the nickel in the sample; Step 2 2) will step 2 1) to obtain the nickel foam wrapped by graphene, and then make the The obtained sample is cut into 1cm*1.5cm sample; Others are the same as the specific embodiment 1 to 2.
[0047] Adopt following test to verify effect of the present invention:
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