Pt/graphene catalyst, preparation method and use thereof
AssigneeOcean's King Lighting Science & Technology Co., Ltd.
InventorsMingjie Zhou, Linglong Zhong, Yaobing Wang
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Abstract
A Pt/graphene catalyst comprises graphene as carrier, and Pt loaded on the graphene. The use of graphene as carrier for the catalyst takes advantage of the ion effect and two-dimensional ductility of graphene, which increases the stability of the catalyst. The catalyst is prepared by a reverse micelles system method which provides a micro-environment (i.e. water-in-oil microemulsion), so that the particle size of the resulting nano-particles can be regulated easily and is more uniformly distributed. The use of the catalyst in electrochemostry is also disclosed.
Claims10
A preparation method of a Pt/graphene catalyst, comprising the steps of:
- performing an oxidation reaction with graphite power according to a Hummers method to obtain graphite oxide;
- adding the graphite into water and then ultrasonically dispersing to form a graphene oxide solution with uniformly dispersed monolithic layer;
- preparing a reverse micellar system containing surfactant, co-surfactant, oil phase, and chloroplatinic acid aqueous solution at room temperature;
- adding the graphite oxide solution into the reverse micellar system dropwise, and adding catalyst dropwise to perform a reduction reaction under a water bath heating condition to obtain an emulsion containing Pt and graphene;
- adding demulsifier into the emulsion dropwise to load Pt on the graphene carrier;
- and
- filtering, washing, and drying the graphene loaded with the Pt to obtain the Pt/graphene catalyst.
Dependencies are inferred from the claim text.