Composite gel ball containing graphene oxide quantum dots/magnetic chitosan oligosaccharide, and preparation method and application of composite gel ball
A composite gel, chitosan oligosaccharide technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, alkali metal compounds, etc., can solve the problem that the embedded particles are easily broken, the mass transfer resistance is large, and the activity loss is large. and other problems, to achieve the effect of good mechanical strength, large adsorption capacity and high viscosity
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Embodiment 1
[0032] A composite gel ball comprising graphene oxide quantum dots / magnetic chitosan oligosaccharides is prepared by the following steps:
[0033] 1) Preparation of magnetic chitosan oligosaccharide solution: Add poly-γ glutamic acid and chitosan oligosaccharide to deionized water, heat in microwave until completely dissolved, cool to 30°C, add ferroferric oxide dispersion, stir well to prepare Magnetic chitosan oligosaccharide solution; the dosage ratio of poly-gamma glutamic acid, chitosan oligosaccharide and deionized water is 0.625g:0.2g:100mL; the dosage ratio of ferric oxide dispersion to deionized water is 0.075mL:100mL ; The concentration of ferric oxide dispersion is 30%.
[0034] 2) Preparation of composite embedding carrier aqueous solution: add polyvinyl alcohol and sodium alginate to deionized water, sterilize at high temperature and dissolve them completely, and cool to 30°C to obtain polyvinyl alcohol / sodium alginate aqueous solution; polyethylene Alcohol / sodiu...
Embodiment 2
[0040] A composite gel ball comprising graphene oxide quantum dots / magnetic chitosan oligosaccharides is prepared by the following steps:
[0041] 1) Preparation of magnetic chitosan oligosaccharide solution: Add poly-γ glutamic acid and chitosan oligosaccharide to deionized water, heat in microwave until completely dissolved, cool to 30°C, add ferroferric oxide dispersion, stir well to prepare Magnetic chitosan solution; the dosage ratio of poly-gamma glutamic acid, chitosan and deionized water is 0.55g:0.3g:100mL; the dosage ratio of ferric oxide dispersion to deionized water is 0.05mL:100mL ; The concentration of ferric oxide dispersion is 25%.
[0042]2) Preparation of composite embedding carrier aqueous solution: add polyvinyl alcohol and sodium alginate to deionized water, sterilize at high temperature and dissolve them completely, and cool to 30°C to obtain polyvinyl alcohol / sodium alginate aqueous solution; polyethylene Alcohol / sodium alginate aqueous solution and mag...
Embodiment 3
[0048] A composite gel ball comprising graphene oxide quantum dots / magnetic chitosan oligosaccharides is prepared by the following steps:
[0049] 1) Preparation of magnetic chitosan oligosaccharide solution: Add poly-γ glutamic acid and chitosan oligosaccharide to deionized water, heat in microwave until completely dissolved, cool to 30°C, add ferroferric oxide dispersion, stir well to prepare Magnetic chitosan oligosaccharide solution; the dosage ratio of poly-gamma glutamic acid, chitosan oligosaccharide and deionized water is 0.7g:0.1g:100mL; the dosage ratio of ferric oxide dispersion to deionized water is 0.1mL:100mL ; The concentration of ferric oxide dispersion is 35%.
[0050] 2) Preparation of composite embedding carrier aqueous solution: add polyvinyl alcohol and sodium alginate to deionized water, sterilize at high temperature and dissolve them completely, and cool to 30°C to obtain polyvinyl alcohol / sodium alginate aqueous solution; polyethylene Alcohol / sodium al...
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