A kind of fatty guanidine ionized graphene oxide doped composite anion membrane and preparation method thereof
A composite anion and guanidine ion technology, applied in electrochemical generators, fuel cells, electrical components, etc., can solve the problems of low conductivity and poor chemical stability, and achieve the effects of low environmental pollution, simple operation, and mild reaction conditions
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Embodiment 1
[0031] Under inert gas and room temperature, dissolve tetramethylurea in dichloromethane, drop in oxalyl chloride at a rate of 2 drops / s, slowly raise the temperature to 60°C and react for 3 hours, remove the solvent to obtain a white solid, which is Vilsmeyer salt, (tetramethylurea: dichloromethane: oxalyl chloride=9ml: 20ml: 10.2ml);
[0032] 1 mole part of Vilsmeyer salt prepared was dissolved in 1.5 mole part of 3-aminopropyltrimethoxysilane, and after complete dissolution, the temperature was slowly raised to 80° C. for 24 hours. After the reaction is completed, a reddish-brown viscous liquid is obtained, which is the silaneguanidine reagent.
[0033] Dissolve 0.5g of graphene oxide in 300ml of absolute ethanol, stir vigorously for 1 hour, and ultrasonically for 4 hours to obtain a uniformly dispersed dispersion, slowly add 5ml of silane guanidine reagent, react for 24 hours to stop the reaction, and obtain a brown mixed solution. Water, ethanol, and deionized water were...
Embodiment 2
[0038] Under inert gas and room temperature, dissolve tetramethylurea in dichloromethane, drop in oxalyl chloride at a rate of 2 drops / s, slowly raise the temperature to 60°C and react for 3 hours, remove the solvent to obtain a white solid, which is Vilsmeyer salt, (tetramethylurea: dichloromethane: oxalyl chloride=9ml: 30ml: 10.4ml);
[0039] 1 mole part of the prepared Vilsmeyer salt was dissolved in 1.8 mole parts of 3-aminopropyltrimethoxysilane, and after complete dissolution, the temperature was slowly raised to 80° C. for 36 hours. After the reaction is completed, a reddish-brown viscous liquid is obtained, which is the silaneguanidine reagent.
[0040] Dissolve 0.5g of graphene oxide in 300ml of absolute ethanol, stir vigorously for 1 hour, and ultrasonically for 4 hours to obtain a uniformly dispersed dispersion, slowly add 6ml of silane guanidine reagent, react for 32 hours to stop the reaction, and obtain a brown mixed solution. Water, ethanol, and deionized water...
Embodiment 3
[0045] Under inert gas and room temperature, dissolve tetramethylurea in dichloromethane, drop in oxalyl chloride at a rate of 2 drops / s, slowly raise the temperature to 60°C and react for 3 hours, remove the solvent to obtain a white solid, which is Vilsmeyer salt, (tetramethylurea: dichloromethane: oxalyl chloride=9ml: 20ml: 10.2ml);
[0046] Dissolve 1 mole part of the Vilsmeyer salt prepared in 2 mole parts of 3-aminopropyltrimethoxysilane, and slowly raise the temperature to 80° C. for 48 hours after the complete dissolution. After the reaction is completed, a reddish-brown viscous liquid is obtained, which is the silaneguanidine reagent.
[0047] Dissolve 0.5g of graphene oxide in 300ml of absolute ethanol, stir vigorously for 1 hour, and ultrasonically for 4 hours to obtain a uniformly dispersed dispersion, slowly add 7ml of silane guanidine reagent, react for 32 hours to stop the reaction, and obtain a brown mixed solution. Water, ethanol, and deionized water were was...
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