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Fe3O4 nanoparticle-short carbon nanotube/poly(2,6-pyridine) dicarboxylic acid composite film and its preparation method and application

A carbon nanotube and nanoparticle technology is applied in the field of analysis and detection to achieve the effects of easy operation, simple preparation method and uniform size

Active Publication Date: 2019-05-14
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fe that has been studied 3 o 4 Nanoparticle-carbon nanotube supramolecular system, mainly through in situ synthesis or post-fixation method, the carbon tubes used are all the original preparation length, and the tailored functionalized carbon nanotubes are used as the skeleton to load Fe 3 o 4 The nanoparticle approach has not been reported

Method used

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  • Fe3O4 nanoparticle-short carbon nanotube/poly(2,6-pyridine) dicarboxylic acid composite film and its preparation method and application
  • Fe3O4 nanoparticle-short carbon nanotube/poly(2,6-pyridine) dicarboxylic acid composite film and its preparation method and application
  • Fe3O4 nanoparticle-short carbon nanotube/poly(2,6-pyridine) dicarboxylic acid composite film and its preparation method and application

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Experimental program
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Effect test

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 30min under the protection of nitrogen, then 40mg short carbon nanotubes were added into the mixed solution, and after full contact for 30min, iron metal ions were fully adsorbed on the surface of the shor...

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 mixed solution of O (2.0mmol / L) was fully stirred for 20min under the protection of nitrogen, then 40mg short carbon nanotubes were added into the mixed solution, and after full contact for 40min, iron metal ions were fully adsorbed on the surface of the short...

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 into the mixed solution, and after full contact for 40min, iron metal ions were fully adsorbed on the surface of the sho...

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Abstract

The invention discloses a Fe3O4 nanoparticles-short carbon nanotube / poly(2,6-pyridine)dicarboxylic acid composite film and a preparation method and an application thereof. The preparation method takes the cut and acidified carbon nanotube as a support frame, and attaches Fe3O4 ultramicrons on the surface of the support frame by adopting an in-situ sedimentation method, thus, a Fe3O4 nanoparticles-short carbon nanotube compound is prepared; on the surface of a poly (2,6-pyridine)dicarboxylic acid electropolymerized film, through a Pi-Pi accumulation principle, the Fe3O4 nanoparticles-short carbon nanotube compound of a certain amount is fixed, and a ternary composite film having excellent electrocatalysis performance can be obtained. The composite material is used for determining an omeprazole sample, has extremely high electrocatalytic activity on the oxidation of omeprazole, can be used for modifying glassy carbon electrode, and realizes the ultra-sensitive detection of the omeprazole sample.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, in particular to a Fe 3 o 4 Nanoparticle-short carbon nanotube / poly(2,6-pyridine) dicarboxylic acid compound and its preparation method and application, and magnetic nanoparticle-short carbon nanotube / poly(2,6-pyridine) dicarboxylic acid compound Applied to the detection of omeprazole drug samples. Background technique [0002] Omeprazole is a derivative of benzimidazole that acts as a H + -,K + - ATPase inhibitor, it can effectively control gastric acid, so it can be used to treat gastric diseases such as duodenal ulcer, gastroesophageal reflux disease, erosive esophagitis and Zhuo-Ellison syndrome. In addition, it can effectively kill Helicobacter pylori in combination with antibiotics. So far, the methods for detecting omeprazole mainly include high performance liquid chromatography, spectrometry, capillary electrophoresis, and capillary chromatography. Although these metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/48B82Y15/00B82Y30/00B82Y40/00C25D9/02
CPCB82Y15/00B82Y30/00B82Y40/00C25D9/02G01N27/308G01N27/48
Inventor 李春香刘新艳邓克勤
Owner HUNAN UNIV OF SCI & TECH
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