Synthesis method of 3-aminopropyltriethoxysilane modified graphene oxide
A technology of aminopropyltriethoxysilane and its synthesis method, which is applied in the fields of chemical instruments and methods, carbon compounds, inorganic chemistry, etc., and can solve the problem of high aggregate hardness, difficult grinding, and no graphene oxide electron microscope diagram, etc. problem, achieve the effect of lowering the reaction temperature and shortening the reaction time
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Embodiment 1
[0024] Synthesis of 3-Aminopropyltriethoxysilane Modified Graphene Oxide
[0025] Add 20mg of graphene oxide into 35.6g of tetrahydrofuran, ultrasonically disperse at 25°C for 1.5h, and then add 3.76*10 -3 mg 3-aminopropyltriethoxysilane, reacted at 70°C for 8.0h, centrifuged, washed, and dried to obtain 30 mg of black powder 3-aminopropyltriethoxysilane-modified graphene oxide.
[0026] Structure Identification:
[0027] 1. Infrared analysis
[0028] In the infrared spectrum of the target compound 3-aminopropyltriethoxysilane modified graphene oxide, it can be seen that the 1740cm -1 The carbonyl stretching vibration absorption peak at has moved to 1636cm -1 , corresponding to 1248cm in graphite oxide -1 The characteristic absorption peak of the epoxy group becomes very weak or even disappears, indicating that some of the amino groups in 3-aminopropyltriethoxysilane have undergone an addition reaction with the epoxy groups in graphite oxide. Modified graphite oxide at 10...
Embodiment 2
[0038] Synthesis of 3-Aminopropyltriethoxysilane Modified Graphene Oxide
[0039] Add 40mg of graphene oxide into 100g of tetrahydrofuran, ultrasonically disperse at 25°C for 1h, and then add 9*10 -3mg3-aminopropyltriethoxysilane was reacted at 60°C for 7.0h, centrifuged, washed, and dried to obtain 58 mg of black powder 3-aminopropyltriethoxysilane-modified graphene oxide.
[0040] Reduction of Graphene Oxide Modified by 3-Aminopropyltriethoxysilane
[0041] Disperse 20 mg of 3-aminopropyltriethoxysilane-modified graphene oxide after washing and drying in 40 mL of tetrahydrofuran, after ultrasonication for 0.5 h, add 0.5 g of hydrazine hydrate, and reduce at 70 ° C for 6 h; The resulting product was washed with ethanol and distilled water, and dried to obtain 3-aminopropyltriethoxysilane-modified graphene. Weigh 10 mg of dried 3-aminopropyltriethoxysilane-modified graphene, disperse them in DMF, DMSO, ethanol, THF, and acetone respectively, and obtain a stable dispersion af...
Embodiment 3
[0043] Synthesis of 3-Aminopropyltriethoxysilane Modified Graphene Oxide
[0044] Add 60mg of graphene oxide into 140g of tetrahydrofuran, ultrasonically disperse at 30°C for 2h, then add 1.00*10 -2 mg 3-aminopropyltriethoxysilane, reacted at 65°C for 7h, centrifuged, washed, and dried to obtain 85 mg of black powder 3-aminopropyltriethoxysilane-modified graphene oxide.
[0045] Reduction of Graphene Oxide Modified by 3-Aminopropyltriethoxysilane
[0046] Disperse 20 mg of 3-aminopropyltriethoxysilane-modified graphene oxide after washing and drying in 40 mL of tetrahydrofuran, after ultrasonication for 0.5 h, add 0.5 g of hydrazine hydrate, and reduce at 70 ° C for 6 h; The resulting product was washed with ethanol and distilled water, and dried to obtain 3-aminopropyltriethoxysilane-modified graphene. Weigh 10 mg of dried 3-aminopropyltriethoxysilane-modified graphene, disperse them in DMF, DMSO, ethanol, THF, and acetone respectively, and obtain a stable dispersion after ...
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