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Graphene oxide/prussian blue nanoparticle composite material solid-phase micro-extraction probe as well as preparation method and application thereof

A technology of Prussian blue and nanoparticles, which is applied in the field of graphene oxide/Prussian blue nanoparticle composite solid-phase microextraction probes and its preparation, can solve the problem of restricting the development and application of solid-phase microextraction technology, and it is difficult to meet the separation and analysis requirements , limited application range of extraction and other issues, to achieve the effect of simple and fast preparation steps, wide application range and controllable thickness

Active Publication Date: 2018-02-06
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although some coatings have been commercialized at present, these probes have disadvantages such as high price (800-900 yuan a piece), unsatisfactory thermal stability, limited application range of extraction, and low extraction efficiency, which are difficult to meet the requirements of actual complex samples. Separation analysis requires and greatly limits the further development and application of solid phase microextraction technology

Method used

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  • Graphene oxide/prussian blue nanoparticle composite material solid-phase micro-extraction probe as well as preparation method and application thereof
  • Graphene oxide/prussian blue nanoparticle composite material solid-phase micro-extraction probe as well as preparation method and application thereof
  • Graphene oxide/prussian blue nanoparticle composite material solid-phase micro-extraction probe as well as preparation method and application thereof

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Embodiment 1

[0045] The preparation of embodiment 1 graphene oxide / Prussian blue nanoparticle composite material

[0046] Preparation of graphene oxide / Prussian blue nanoparticle composite material: The composite material is synthesized according to the literature (Chem. Sci.2015, 6, 4029), and the synthesis method is as follows:

[0047] 200 mg of graphene oxide was placed in 50 mL of ultrapure water and ultrasonicated for 30 min to obtain a uniform graphene oxide dispersion. Then, 170 mg of potassium ferricyanide and 50 mL of 0.01 mol / L hydrochloric acid solution were gradually added to the graphene oxide dispersion under stirring to obtain a uniformly mixed reaction mixture. The reaction mixture was placed in a reaction kettle and placed in an oven at 85° C. for 24 h. After the reaction was completed, the product was collected by centrifugation, and the product was dried in a vacuum oven at 60°C for 12 hours to finally obtain a graphene oxide / Prussian blue nanoparticle composite material...

Embodiment 2

[0048] Example 2 Preparation of Graphene Oxide / Prussian Blue Nanoparticle Composite Solid Phase Microextraction Probe

[0049] The preparation of solid-phase microextraction probe of graphene oxide / Prussian blue nanoparticle composite material, the preparation process is as follows figure 2 , including the following steps:

[0050] S1. Pretreatment of stainless steel fibers: After cutting the stainless steel fibers into 2-3 cm lengths, soak them in ultrapure water, methanol, and acetone in sequence, and sonicate them for 30 min, take them out and dry them naturally.

[0051] S2. Preparation of neutral silicone gel diluent: mix 0.5g of neutral silicone gel with 1.0mL o-xylene, stir well, and sonicate for 5 minutes to obtain a neutral silicone gel diluent.

[0052] S3. Put the pretreated stainless steel fiber into the diluent of neutral silicone glue, take it out, dry the visible droplets on the surface of the stainless steel fiber with filter paper, and obtain a stainless ste...

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Abstract

The invention relates to a graphene oxide / prussian blue nanoparticle composite material solid-phase micro-extraction probe as well as a preparation method and application thereof. A preparation methodof a graphene oxide / prussian blue nanoparticle composite material comprises the following steps: S1: ultrasonically dispersing graphene oxide into water to obtain a graphene oxide dispersion solution; S2: adding potassium ferricyanide and a hydrochloric acid solution into the graphene oxide dispersion solution under a stirring state to obtain a reaction mixed solution; S3: putting the reaction mixed solution into a container, putting the container into a drying oven and reacting; after reacting, centrifuging and collecting a product and drying to obtain the graphene oxide / prussian blue nanoparticle composite material. The graphene oxide / prussian blue nanoparticle composite material provided by the invention is used as an adsorbent of a solid-phase micro-extraction coating; the material has the advantages of good thermal stability, good chemical stability, more surface functional groups and the like; the prepared solid-phase micro-extraction coating has good thermal resistance, high concentration factor and wide applicable range.

Description

technical field [0001] The invention relates to the field of solid-phase microextraction, more specifically, to a graphene oxide / Prussian blue nanoparticle composite material solid-phase microextraction probe and its preparation method and application. Background technique [0002] Solid-phase microextraction (solid-phase microextraction, SPME) is an extraction and enrichment technology that is easy to operate and does not require a large amount of solvents. It is easy to automate and combine with high-efficiency separation and detection methods such as chromatography and electrophoresis. Due to its advantages of less extraction, less interference to the system, and easy automation, it has been widely used in environmental protection, food testing, drug analysis, and clinical analysis. [0003] Extraction coating is the core of SPME technology. The wide application, high sensitivity and high selectivity of SPME technology depend on the development and preparation of coating ...

Claims

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Application Information

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IPC IPC(8): B01J20/281B01D15/10G01N30/02
CPCB01D15/10B01J20/281G01N30/02
Inventor 欧阳钢锋刘舒芹
Owner SUN YAT SEN UNIV
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