Pt open hollow sphere structure catalyst and preparation method and application thereof
A technology of structural catalysts and hollow spheres, applied in structural parts, electrochemical generators, nanotechnology for materials and surface science, etc., can solve structural collapse, many operation steps, complex template or nanocrystal seed synthesis process, etc. question
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[0017] refer to figure 1 , a kind of preparation method of Pt open hollow sphere structure catalyst, one-step chemical reduction method prepares Pt open hollow sphere structure catalyst, specifically: add 4.0mg Pt ( acac) 2 , 25mg sodium dodecyl sulfate (SDS) and 30mg polyvinylpyrrolidone (PVP), ultrasonic treatment at room temperature for 10 minutes and magnetic stirring for 5 minutes, then the resulting suspension was stirred and reacted at 110°C-160°C for 0.5 hours-5 hours , after the reaction product is centrifuged and washed, the Pt open hollow sphere structure catalyst can be obtained.
[0018] SEM analysis shows that most of the prepared catalyst particles are spherical structures with a hollow center and external openings, wherein the catalyst yield of the open hollow sphere structure is as high as 90%, and the average particle size is 540nm, which confirms the Pt open hollow sphere structure synthesized in this example. The catalyst has good shape and size uniformit...
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