Supermolecule hybridized hydrogel, graphene aerogel, preparation methods and application of two
A graphene aerogel and hydrogel technology, applied in the field of electrochemistry, can solve the problems of poor electrical conductivity and related stability, reduced specific surface area, limitation, etc., and achieve the effects of low cost, good contact, and stable strength
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Embodiment 1
[0038] A supramolecular hybrid hydrogel of the present invention, the supramolecular hybrid hydrogel is a three-dimensional network structure, composed of ferrocene-phenylalanine gel factor (Fc-Phe-OH) and a thickness of about 1nm ultrathin graphene oxide was co-assembled through non-covalent bonds.
[0039] The preparation method of the supramolecular hybrid hydrogel of the present embodiment comprises the following steps: the preparation of graphene oxide is to use natural flake graphite as raw material, adopting the improved Hummers method (J. Am. Chem. Soc.1958, 80 (6) 1339-1339; Journal of Materials Chemistry, 2011, 21 (10) 3335-3345.): mix 2.0g of natural graphite and 1.0g of sodium nitrate, add 50ml of concentrated sulfuric acid (98%) under stirring, ice bath The reaction was stirred for 1 h, and then 6.0 g of potassium permanganate was slowly added, and the reaction was continued for 2 h under ice bath, and the mixture was heated to 35 °C for 2 h. Slowly add 120ml of ...
Embodiment 2
[0046] A supramolecular hybrid hydrogel of the present invention has a three-dimensional network structure, which is composed of ferrocene-diphenylalanine gelling factor (Fc-Phe-Phe-OH) and Ultrathin graphene oxide with a thickness of about 1.5 nm is obtained by non-covalent co-assembly.
[0047] The preparation method of the supramolecular hybrid hydrogel of the present embodiment includes the following steps: the preparation of graphene oxide takes natural flake graphite as a raw material, and adopts the improved Hummers method (J. Am. Chem. Soc. 1958, 80(6) 1339-1339; Journal of Materials Chemistry, 2011, 21(10) 3335-3345.). Adjust the pH of the graphene oxide aqueous solution to alkaline (pH=10.0) with phosphate buffered saline; add 24 mg of ferrocene-diphenylalanine powder to a centrifuge tube, add 200 μL of dimethyl sulfoxide to dissolve, and sonicate 1 min to prepare a stock solution with a concentration of 120 mg mL ?1 ; Add the stock solution to the phosphate buffer...
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