Fe3O4 nanoparticles-short carbon nanotube/poly(2,6-pyridine)dicarboxylic acid composite film and preparation method and application thereof
A technology of pyridinedicarboxylic acid and carbon nanotubes, applied in the field of analysis and detection, to achieve the effects of high dispersion, high sensitivity, and high catalytic performance
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Embodiment 1
[0050] (1) Cutting and functionalization of the carbon nanotube skeleton: 50 mg of newly purchased carbon nanotubes were dispersed into 50 mL of concentrated mixed acid, in which concentrated HNO 3 (68wt.%): concentrated H 2 SO 4 (98wt.%) was mixed at a volume ratio of 1:3, and then ultrasonicated in a water bath at 80°C for 4 hours. Then, the acidified short carbon nanotubes were diluted with double-distilled water, then centrifuged, washed, centrifuged again, and washed several times until medium properties, dried in a vacuum oven at 60°C.
[0051] (2) Fe 3 o 4 Preparation of nanoparticle-short carbon nanotube composite: 40mlFeCl configured with 0.1mol / L hydrochloric acid 3 ·6H 2 O (2.0mmol / L) and FeCl 2 4H 2 The mixed solution of O (1.0mmol / L) was fully stirred for 30 minutes under the protection of nitrogen, and then 40 mg of short carbon nanotubes were added to the mixed solution. After full contact for 30 minutes, iron metal ions were fully adsorbed on the surface...
Embodiment 3
[0070] (1) Cutting and functionalization of the carbon nanotube skeleton: 5 mg of newly purchased carbon nanotubes were dispersed into 50 mL of concentrated mixed acid, in which concentrated HNO 3 (68wt.%): concentrated H 2 SO 4 (98wt.%) was mixed at a volume ratio of 1:3, and then ultrasonicated in a water bath at 90°C for 2 hours. Then, the acidified short carbon nanotubes were diluted with double distilled water, then centrifuged, washed, centrifuged again, and washed several times until medium properties, dried in a vacuum oven at 80°C.
[0071] (2) Fe 3 o 4 Preparation of nanoparticle-short carbon nanotube composite: 40mlFeCl configured with 0.1mol / L hydrochloric acid 3 ·6H 2 O(6.0mmol / L) and FeCl 2 4H 2 The mixture of O (2.0mmol / L) was fully stirred for 20min under the protection of nitrogen, then 40mg of short carbon nanotubes were added to the mixture, and after full contact for 40min, the iron metal ions were fully adsorbed on the surface of the short carbon na...
Embodiment 4
[0077] (1) Cutting and functionalization of the carbon nanotube skeleton: 100 mg of newly purchased carbon nanotubes were dispersed into 50 mL of concentrated mixed acid, in which concentrated HNO 3 (68wt.%): concentrated H 2 SO 4 (98wt.%) was mixed at a volume ratio of 1:3, and then ultrasonicated in a water bath at 70°C for 5 hours. Then, the acidified short carbon nanotubes were diluted with double-distilled water, then centrifuged, washed, centrifuged again, and washed several times until medium properties, dried in a vacuum oven at 60°C.
[0078] (2) Fe 3 o 4 Preparation of nanoparticle-short carbon nanotube composite: 40mlFeCl configured with 0.3mol / L hydrochloric acid 3 ·6H 2 O (2.0mmol / L) and FeCl 2 4H 2 The mixed solution of O (0.5mmol / L) was fully stirred for 20min under the protection of nitrogen, then 40mg short carbon nanotubes were added to the mixed solution, and after full contact for 40min, iron metal ions were fully adsorbed on the surface of the short...
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