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Method for preparing single-wall carbon nanotube metal organic frame

A single-wall carbon nanotube and metal-organic framework technology, which is applied in the field of preparation in the field of nanotechnology, can solve the problems of precipitation and insufficient stability in combination with carbon nanotubes, and achieves a simple, easy and controllable preparation method. Effect

Inactive Publication Date: 2009-02-04
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] After searching the literature of the prior art, it was found that Triply fused Zn-II-porphyrin oligomers: Synthesis, properties, and supramolecular interactions with single- walled carbon nanotubes (SWNTs) (Synthesis of Zn(II) ion-porphyrin ternary polymers, properties and their supramolecular reaction with single-walled nanotubes), in which it is proposed that zinc Zn(II) ion-porphyrin functional technology to the surface of carbon nanotubes), specifically: directly mix Zn(II) ions-porphyrin and carbon nanotubes with ultrasound, and use the supramolecular interaction between Zn(II) ions-porphyrin and carbon nanotubes, Functionalization of zinc Zn(II) ion-porphyrin to the surface of carbon nanotubes has the disadvantage that the combination of zinc Zn(II) ion-porphyrin and carbon nanotubes is not stable enough due to the supramolecular interaction, and after a long time time will precipitate

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  • Method for preparing single-wall carbon nanotube metal organic frame
  • Method for preparing single-wall carbon nanotube metal organic frame

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Embodiment 1

[0025] Single-walled carbon nanotubes prepared by chemical vapor deposition were used as the initial raw material, and after acidification, the precursor of single-walled carbon nanotube metal-organic framework (SWNT-MOF-1) was obtained through a coordination reaction with zinc acetate. Then, the organic ligand 2,2'-bipyridine was added to form a single-walled carbon nanotube / zinc / bipyridine framework (SWNT-MOF-2) through coordination.

[0026] Step a: Add 0.30 g of carbon nanotube raw material and 225 mL of mixed solution of nitric acid and sulfuric acid into a single-necked round-bottomed flask equipped with a magnetic stirring rotor, heat it to 80 °C after ultrasonic treatment at 40 kHz for 25 min, and react with stirring for 55 min. ф0.22μm polytetrafluoroethylene microporous filter membrane, washed repeatedly with a large amount of deionized water until neutral, vacuum dried at 50°C for 24 hours to obtain acidified carbon nanotubes;

[0027] Step b: Add 200mg SWNT-COOH an...

Embodiment 2

[0030] Using single-walled carbon nanotubes prepared by catalytic pyrolysis as the initial raw material, after acidification, the precursor of single-walled carbon nanotube metal-organic framework (SWNT-MOF-1) was obtained through a coordination reaction with zinc acetate. Then the organic ligand 4,4'-bipyridine was added to form a single-walled carbon nanotube / zinc / bipyridine framework (SWNT-MOF-3) through coordination.

[0031]Step a: Add 0.30 g of carbon nanotube raw material and 225 mL of mixed solution of nitric acid and sulfuric acid into a single-necked round-bottomed flask equipped with a magnetic stirring rotor, heat it to 80 °C after ultrasonic treatment at 40 kHz for 25 min, and react with stirring for 55 min. ф0.22μm polytetrafluoroethylene microporous filter membrane, washed repeatedly with a large amount of deionized water until neutral, vacuum dried at 50°C for 24 hours to obtain acidified carbon nanotubes;

[0032] Step b: Add 200mg SWNT-COOH and 200mL deionize...

Embodiment 3

[0035] Single-walled carbon nanotubes prepared by chemical vapor deposition were used as the initial raw material, and after acidification, the precursor of single-walled carbon nanotube metal-organic framework (SWNT-MOF-1) was obtained through a coordination reaction with zinc acetate. Then add organic ligands 2, 2':6', 2":6", 2-quaterpyridine, and form a single-walled carbon nanotube / zinc / bipyridine framework (SWNT-MOF-4) through coordination .

[0036] Step a: Add 0.35g of carbon nanotube raw material and 120mL of mixed solution of nitric acid and sulfuric acid into a single-necked round bottom flask equipped with a magnetic stirring rotor, heat it to 55°C after ultrasonic treatment at 40kHz for 45min, and react for 45min with stirring. ф0.22μm polytetrafluoroethylene microporous filter membrane, washed repeatedly with a large amount of deionized water until neutral, vacuum dried at 50°C for 24 hours to obtain acidified carbon nanotubes;

[0037] Step b: Add 150mg SWNT-COO...

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Abstract

The invention relates to a preparation method of a single-walled carbon nanotube metal-organic framework in the nanotechnology field, which comprises the following steps: a. mixing 1 weight proportion of dried single-walled carbon nanotube with 50-5000 weight proportions of strong oxidizing acid to be processed by ultrasonic treatment, stirring to react, sucking filtration and washing until the solution is neutral, and obtaining acidulated carbon nanotube after drying; b. adding zinc acetate aqueous solution drop by drop, stirring to react, sucking filtration and washing, dispersing the product in an organic solvent again, sucking filtration once again, and obtaining the product SWNT-MOF-1 after drying; c. mixing the SWNT-MOF-1 and the organic solution to be processed by the ultrasonic treatment, adding the organic solvent solution of an organic ligand, stirring to react, cooling, adding the organic solvent to leach, sucking filtration, dispersing the black products in de-ionized water again, sucking filtration once again, dialyzing the black products, and obtaining the final products after drying. The method is simple and the material with both the perfect structure of the single-walled carbon nanotube and the structure of the metal-organic framework can be obtained.

Description

technical field [0001] The invention relates to a preparation method in the field of nanotechnology, in particular to a preparation method of a single-walled carbon nanotube metal organic framework. Background technique [0002] Carbon nanotube (CNT for short) is a new type of carbon structure discovered in recent years. It is a seamless hollow carbon tube formed by curling graphene sheets formed by carbon atoms. It is a one-dimensional quantum material with a highly delocalized π-electron conjugated system. Carbon nanotubes are classified into single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs). Single-walled carbon nanotubes (SWNTs) are widely regarded as important players in new and future materials due to their perfect structure, unique quantum properties and mechanical properties. Since 1993, considerable progress has been made in its characterization methods and functionalization research, and the technology of oxidative modification of c...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 李玲伏传龙孟令杰路庆华
Owner SHANGHAI JIAO TONG UNIV
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