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Method organic framework based on alginic acid electrospun fibers and preparation method thereof

A metal-organic framework and electrospun fiber technology, which is applied in the direction of spinning solution preparation, fiber type, fiber treatment, etc., can solve the problems of harsh growth conditions, uncontrollable reaction process, etc., achieve uniform shape, suitable for large-scale production, The effect of mild preparation conditions

Inactive Publication Date: 2018-03-27
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent (CN102671553A) reported the use of electrospinning technology to prepare seed crystal membranes, and then use hydrothermal method to grow MOFs. The growth conditions are relatively harsh, requiring high-pressure reactors, and the reaction process is uncontrollable, etc.

Method used

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  • Method organic framework based on alginic acid electrospun fibers and preparation method thereof
  • Method organic framework based on alginic acid electrospun fibers and preparation method thereof
  • Method organic framework based on alginic acid electrospun fibers and preparation method thereof

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Embodiment 1

[0019] A method for preparing a metal-organic framework based on alginic acid electrospun fibers, comprising the following steps:

[0020] (1) Electrospun base nanofiber membrane: Sodium alginate and polyethylene oxide (PEO, average molecular weight 400w) were dissolved in deionized water to prepare 4wt% solutions respectively, and the two solutions of the gained were degassed by centrifugal degassing respectively, according to Mix the sodium alginate solution and the polyethylene oxide solution at a volume ratio of 3:2 and stir for 3 hours, add Triton-100 and dimethyl sulfoxide (DMSO) to the mixed solution, mix and stir for 3 hours, and centrifuge and deaerate to obtain the spinning precursor solution, the contents of Triton-100 and DMSO in the spinning precursor solution were 0.5wt% and 5wt%, stirred for 3 hours, centrifuged for defoaming, and set the parameters for electrospinning: the inner diameter of the needle was 0.2mm, and the receiving distance was 10cm. Voltage 15KV...

Embodiment 2

[0023] A method for preparing a metal-organic framework based on alginic acid electrospun fibers, comprising the following steps:

[0024] (1) Electrospun base nanofiber membrane: Sodium alginate and polyethylene oxide (PEO, average molecular weight 400w) were dissolved in deionized water to prepare 4wt% solutions respectively, and the two solutions of the gained were degassed by centrifugal degassing respectively, according to Mix the sodium alginate solution and the polyethylene oxide solution at a volume ratio of 3:2 and stir for 3 hours, add Triton-100 and dimethyl sulfoxide (DMSO) to the mixed solution, mix and stir for 3 hours, and centrifuge and deaerate to obtain the spinning precursor solution, the contents of Triton-100 and DMSO in the spinning precursor solution were 0.5wt% and 5wt%, stirred for 3 hours, centrifuged for defoaming, and set the parameters for electrospinning: the inner diameter of the needle was 0.2mm, and the receiving distance was 10cm. Voltage 15KV...

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Abstract

The invention discloses a metal organic framework based on alginic acid electrospun fibers and a preparation method thereof. The preparation method comprises the following steps: (1) electrospinning abase nanofiber membrane, namely taking a sodium alginate / polyethylene oxide nanofiber membrane obtained by adopting an electrospinning method as the base nanofiber membrane; and (2) growing MOFs crystals. The preparation method disclosed by the invention has the advantages that no high pressure or high temperature is required in a preparation process, preparation conditions are mild, production cost and potential safety hazard can be effectively reduced, the obtained metal organic framework is uniform in appearance and ordered in configuration, and yield is high, so that the preparation method disclosed by the invention is applicable to large-scale production and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation methods of metal-organic frameworks and composite materials of micro-nano fibers, and in particular relates to a metal-organic framework based on alginic acid electrospun fibers and a preparation method thereof. Background technique [0002] In the past two decades, the metal-organic framework structure is an organic-inorganic hybrid crystalline porous material that is self-assembled in the form of coordination bonds between metal ions and organic ligands. Metal-Organic Frameworks (MOFs) formed by ligands in a certain environment (specific solvent, pressure, temperature, acidity, etc.) through coordination bonds and other weak modes of action; MOFs are used in gas storage and separation , Supercapacitors, heterogeneous catalysis, fluorescence detection and many other fields show attractive application prospects. Its characteristics are: (1) large specific surface area; (2) the diversity of metal ions a...

Claims

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Application Information

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IPC IPC(8): D06M15/687D01D1/02D01D1/10D04H1/4382D04H1/728D06M101/10D06M101/30
CPCD01D1/02D01D1/103D04H1/4382D04H1/728D06M15/687D06M2101/10D06M2101/30
Inventor 潘维于桂凤王进平孙晓波修华刘瑞娟刘永萍
Owner QINGDAO AGRI UNIV
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