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Rime-like metal-organic framework composite microelectrode and its in-situ preparation method and application

A metal-organic framework and organic framework technology, applied in the field of nanomaterials, can solve problems such as energy consumption, environmental pollution, complex and multi-step synthesis methods, etc.

Active Publication Date: 2019-04-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its purpose is to prepare a rime-like [Cu(INA) 2 ] Metal-organic framework / 3D graphene-coated carbon fiber composite microelectrode, thus solving the problem of in-situ synthesis of metal-organic framework materials with uniform size and regular shape in the current metal-organic framework preparation process, and the synthesis method is complex and multi-step, polluting the environment , technical issues such as energy consumption and time

Method used

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  • Rime-like metal-organic framework composite microelectrode and its in-situ preparation method and application
  • Rime-like metal-organic framework composite microelectrode and its in-situ preparation method and application
  • Rime-like metal-organic framework composite microelectrode and its in-situ preparation method and application

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Embodiment 1

[0040] A rime-like copper organic framework [Cu(INA) 2 ] / Three-dimensional graphene-coated carbon fiber composite microelectrodes, including three-dimensional graphene-coated activated carbon fibers and rime-like copper organic frameworks on the graphene surface [Cu(INA) 2 ], the surface of the three-dimensional graphene-coated activated carbon fibers is porous. The rime-like copper organic framework [Cu(INA) 2 ] uniformly deposited on the surface layer of the three-dimensional graphene-coated activated carbon fiber. The diameter of the three-dimensional graphene-coated activated carbon fiber is about 15 μm, and the surface is a loose porous network structure formed by stacking graphene nanosheets; the rime-like copper organic framework [Cu(INA) 2 ] The material is evenly distributed on the three-dimensional network structure formed by stacking graphene nanosheets, with uniform holes and a diameter of about 1 μm. Such as figure 1 E and figure 1 As shown in F, its microst...

Embodiment 2

[0048] A rime-like copper organic framework [Cu(INA) 2 ] / Three-dimensional graphene-coated carbon fiber composite microelectrodes, including three-dimensional graphene-coated activated carbon fibers and rime-like copper organic frameworks on the graphene surface [Cu(INA) 2 ], the surface of the three-dimensional graphene-coated activated carbon fibers is porous. The rime-like copper organic framework [Cu(INA) 2 ] uniformly deposited on the surface layer of the three-dimensional graphene-coated activated carbon fiber. The diameter of the three-dimensional graphene-coated activated carbon fiber is about 13 μm, and the surface is a loose porous network structure formed by stacking graphene nanosheets; the rime-like copper organic framework [Cu(INA) 2 ] The material is evenly distributed on the three-dimensional network structure formed by stacking graphene nanosheets, with uniform holes and a diameter of about 1.1 μm.

[0049] A kind of rime-like copper organic framework [Cu(...

Embodiment 3

[0055] A rime-like copper organic framework [Cu(INA) 2 ] / Three-dimensional graphene-coated carbon fiber composite microelectrodes, including three-dimensional graphene-coated activated carbon fibers and rime-like copper organic frameworks on the graphene surface [Cu(INA) 2 ], the surface of the three-dimensional graphene-coated activated carbon fibers is porous. The rime-like copper organic framework [Cu(INA) 2 ] uniformly deposited on the surface layer of the three-dimensional graphene-coated activated carbon fiber. The diameter of the three-dimensional graphene-coated activated carbon fiber is about 10 μm, and the surface is a loose porous network structure formed by stacking graphene nanosheets; the rime-like copper organic framework [Cu(INA) 2 ] The material is evenly distributed on the three-dimensional network structure formed by stacking graphene nanosheets, with uniform holes and a diameter of about 1.2 μm.

[0056] A kind of rime-like copper organic framework [Cu(...

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Abstract

The invention discloses rime-shaped [Cu(INA)2] metal-organic framework / three-dimensional graphene coated carbon fiber composite microelectrode, an in-situ preparation method and an application. The composite microelectrode comprises three-dimensional graphene coated activated carbon fibers and rime-shaped [Cu(INA)2] metal-organic frameworks on the three-dimensional graphene surface layer, wherein three-dimensional graphene is loose and porous, and the rime-shaped [Cu(INA)2] metal-organic frameworks are uniformly deposited on the three-dimensional graphene surface layer. The preparation method of the composite microelectrode comprises steps as follows: the carbon fibers are subjected to electrochemical activation in mixed acid, graphene and spongy metal copper are sequentially electro-deposited, spongy metal copper is converted into the metal-organic frameworks in situ with an electrochemical anode stripping method. The provided method is simple and convenient to operate and environmentally friendly. The composite microelectrode has lower LOD (limit of detection) and higher detection sensitivity when applied to the field of nano electrochemical sensors, and has very broad application prospects.

Description

technical field [0001] The invention belongs to the field of nanomaterials, specifically a rime-like [Cu(INA) 2 ] In-situ preparation method and application of metal-organic framework / three-dimensional graphene-coated carbon fiber composite microelectrode. technical background [0002] Carbon fiber is a microcrystalline graphite material obtained by carbonizing and graphitizing organic fibers. Carbon fiber is cheap, small in size, non-toxic, harmless, chemically inert, and has good electrical conductivity, so it is often used in the production of microelectrodes. Compared with pure carbon fibers, graphene-coated carbon fibers with a three-dimensional network structure have better electrical conductivity and better stability, and can be used as excellent carbon fiber microelectrode substrates especially in the field of electrochemical sensors. [0003] Metal-organic framework materials are organic-inorganic hybrid materials with intramolecular pores formed by the self-assem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 刘宏芳王正运王锋
Owner HUAZHONG UNIV OF SCI & TECH
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