Method for preparing solid phase micro-extraction fiber by self-assembling graphene coating on metal wire layer by layer

A layer-by-layer self-assembly and fiber extraction technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of graphene easy to fall off, short service life, etc., achieve excellent adsorption performance, improve mechanical strength, and improve fragility Effect
CN102553553AInactive Publication Date: 2012-07-11UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2012-07-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a solid phase micro-extraction fiber by self-assembling a graphene coating on a metal wire serving as a carrier layer by layer, and particularly relates to a method for self-assembling graphene on the surface of a metal wire layer by layer by taking gold nano particles as connection arms. The novel method is characterized by comprising the following steps of: performing chemical silver plating on the surface of the metal wire by taking the metal wire as the carrier; and self-assembling sulfydryl functional graphene on the silver-plated metal wire layer by layer by adopting a layer-by-layer self-assembly method and taking the gold nano particles as the connection arms, and thus obtaining the novel solid phase micro-extraction fiber by self-assembling the graphene coating layer by layer. The prepared solid phase micro-extraction fiber has the characteristics of high mechanical strength, stable extraction coating, high enrichment capacity, long service life and the like, can be used for enrichment analysis of trace components in samples, such as foods, environments, medicaments, biochemical substances and the like, and has high application potential.
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Description

technical field

[0001] The invention relates to a technique for preparing solid-phase microextraction fiber of graphene bonding coating on a metal wire carrier. Background technique

[0002] Solid-phase microextraction (SPME) is a new type of high-efficiency separation technology developed in the 1990s. It has low cost, strong enrichment ability, fast analysis speed, easy operation, and convenient on-site analysis and instrument connection. It has been widely used in the enrichment analysis of trace components in food, environmental, pharmaceutical and biochemical samples. The core of this technology is the preparation of solid-phase microextraction fibers. The solid-phase microextraction fibers with excellent extraction performance and long life depend on the carrier and the extraction coating. Fused silica is a common carrier for preparing solid-phase microextraction fibers. Due to its poor mechanical properties, it is easily broken during operation, which seriously affec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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