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Preparation method and application of chiral MOF nanofiber-graphene hybrid material

A nanofiber and graphene technology is applied in the field of preparation of chiral MOF nanofiber-graphene hybrid materials to achieve the effects of easy operation, simple operation and high sensitivity

Inactive Publication Date: 2018-01-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the carboxylic acid or nitrogen-containing functional groups on graphene can strengthen the coordination between graphene oxide and MOFs, and induce the growth of MOFs. In terms of properties and applications, MOFs and graphene oxide will surely play a synergistic role. At present, there are Three-dimensional MOFs and graphene hybrid materials have been reported. As far as we know, there are no reports on hybrid materials constructed by two-dimensional chiral MOF materials and graphene.

Method used

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  • Preparation method and application of chiral MOF nanofiber-graphene hybrid material
  • Preparation method and application of chiral MOF nanofiber-graphene hybrid material
  • Preparation method and application of chiral MOF nanofiber-graphene hybrid material

Examples

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Effect test

Embodiment 1

[0026] Example 1 Preparation method of a chiral MOF nanofiber-graphene hybrid material

[0027] 0.08 g of graphene oxide, 0.3 g of copper nitrate and 70 mL of water were blended and ultrasonicated at room temperature for 5 min to fully dissolve them to obtain a graphene oxide@Cu(II) aqueous solution; 0.45 g of L-aspartic acid acid, 15 mL of water and 0.20 g of NaOH were blended and dissolved to obtain an aqueous solution of L-aspartic acid salt; under stirring, the aqueous solution of L-aspartic acid salt was added dropwise to the aqueous solution of graphene oxide@Cu(II), Stand at room temperature for 1 hour, filter with suction, wash the precipitate three times with water and ethanol, and dry at 60°C to obtain the MOF nanofiber-graphene hybrid material.

[0028] The chiral MOF nanofiber-graphene hybrid material is a graphene nanosheet-loaded chiral MOF nanofiber composite material; the chiral MOF nanofiber has a length of 500-800um and a diameter width of 70-90nm.

[0029] ...

Embodiment 2

[0031] Example 2 Preparation method of a chiral MOF nanofiber-graphene hybrid material

[0032] Blend 0.12 g of graphene oxide, 0.7 g of copper nitrate and 90 mL of water and sonicate at room temperature for 10 min to fully dissolve it to obtain a graphene oxide@Cu(II) aqueous solution; mix 0.65 g of L-aspartic acid, 25 mL of water and 0.26 g of NaOH were blended and dissolved to prepare the L-aspartic acid salt solution; under stirring, the L-aspartic acid salt solution was added dropwise to the graphene oxide@Cu(II) aqueous solution, and the Set aside for 1 h, filter with suction, wash the precipitate three times with water and ethanol respectively, and dry at 60°C to obtain a MOF nanofiber-graphene hybrid material.

Embodiment 3

[0033] Example 3 Preparation method of a chiral MOF nanofiber-graphene hybrid material

[0034] 0.10 g graphene oxide, 0.33 g copper nitrate and 80 mL water were blended and ultrasonicated at room temperature for 7 min to fully dissolve them to obtain a graphene oxide@Cu(II) aqueous solution; 0.55 g L-aspartic acid, 20 mL of water and 0.23 g of NaOH were blended and dissolved to prepare the L-aspartic acid salt solution; under stirring, the L-aspartic acid salt solution was added dropwise to the graphene oxide@Cu(II) aqueous solution, and the solution was static at room temperature. Set aside for 1 h, filter with suction, wash the precipitate three times with water and ethanol respectively, and dry at 60°C to obtain the MOF nanofiber-graphene hybrid material.

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Abstract

The invention discloses a preparation method of a chiral MOF nanofiber-graphene hybrid material and an application for detecting chiral enantiomers based on the composite material, and belongs to thefields of nano composite mateirals, catalytic technology and analytical chemistry detection technology. The preparation method comprises the main steps of co-mixing an L-aspartate aqueous solution with a graphene oxide aqueous solution containing Cu (II) positive ions at room temperature, allowing to stand, separating and drying. A chiral sensor constructed by the composite material is used for sensitive detection of the content of the enantiomers of D-(+)-histidine and L-(-)-histidine.

Description

technical field [0001] The invention relates to a preparation method and application of a chiral MOF nanofiber-graphene hybrid material, and belongs to the technical fields of nanomaterials, metal organic framework nanomaterials and analytical chemistry. Background technique [0002] Chirality is one of the essential properties of nature. The property that a compound molecule and its mirror image cannot be completely superimposed is called chirality. Chiral metal-organic frameworks (MOFs) are periodic and ordered porous crystalline materials assembled by chiral organic bridging ligands and metal ions or metal clusters through self-assembly. The synthesis operation is relatively simple and the reaction conditions are mild. It has the characteristics of inorganic materials and organic materials. From the perspective of ligands, both chiral and achiral ligands may be assembled with metal ions to obtain chiral metal-organic framework materials with structural characteristics. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48C01B32/184
Inventor 董彦芳王志玲骆玉成
Owner UNIV OF JINAN
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