Low-platinum composite material based on tungsten oxide/graphene aerogel as well as preparation method and application of low-platinum composite material
A technology of graphene airgel and composite materials, which is applied in the field of low-platinum composite materials and its preparation, can solve the problems of low electrical conductivity and application limitations, and achieve the effects of improved catalytic activity, low loading capacity and short reaction cycle
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Embodiment 1
[0060] A method for preparing a low-platinum composite material based on tungsten oxide / graphene airgel, comprising the steps of:
[0061] S1. Synthesis of uniform graphene oxide tert-butanol dispersion:
[0062] Synthesize a graphene oxide aqueous dispersion of about 13mg / mL, take 10mL and add an equal volume of tert-butanol to centrifuge, repeat 3 times, and ultrasonically homogenize to obtain a graphene oxide tert-butanol dispersion;
[0063] S2. One-step synthesis of porous three-dimensional tungsten oxide / graphene hydrogel:
[0064] Take the above graphene oxide dispersion, prepare 10mL of 5mg / mL graphene tert-butanol dispersion with 5mg / mL tungsten chloride tert-butanol solution, add 6mL of 7mg / mL tungsten chloride tert-butanol solution, stir well, put the precursor reaction solution in a pot In a polytetrafluoroethylene-lined hydrothermal reactor, heat it to 180°C for 16 hours, and wait for it to cool naturally to obtain a three-dimensional porous tungsten oxide / graphe...
Embodiment 2
[0068] This embodiment is based on the preparation method of the low-platinum composite material of tungsten oxide / graphene airgel, other conditions are the same as embodiment 1, the difference is:
[0069] The graphene aqueous solution is replaced by ethanol with graphene ethanol solution, the solvent of the tungsten chloride precursor solution is replaced with ethanol, and the precursor reaction solution is put into a polytetrafluoroethylene-lined hydrothermal reaction kettle in one pot.
Embodiment 3
[0071] This example is based on the preparation method of a low-platinum composite material of tungsten oxide / graphene airgel, and other conditions are the same as Example 1, except that the hydrothermal reaction temperature is 200° C. for 16 hours.
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