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Fabricating Core-Shell WC@C/Pt Structures and its Enhanced Performance for Methanol Electrooxidation 被引量:1
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作者 陈赵扬 段隆发 +3 位作者 褚有群 盛江峰 林文锋 马淳安 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2017年第4期450-456,I0002,共8页
The spray-dried spheres within a W/Pt multi-separation can be used to prepare discrete core-shell WC@C/Pt catalysts through a typical carburization production mechanism at 800 ℃. In contrast with previous studies of ... The spray-dried spheres within a W/Pt multi-separation can be used to prepare discrete core-shell WC@C/Pt catalysts through a typical carburization production mechanism at 800 ℃. In contrast with previous studies of the WC/Pt synthesis, the reaction observed here proceeds through an indirect annealing thereby resulting in core-shell structure, and mechanism at 600℃ wherein species diffuse, Pt nanoparticles were successfully dispersed in size/shape and randomly scattered across the in situ produced C spheres. Through direct carburization or at higher initial hydrochloroplatiuic acid concentrations, however, complete reaction with core-shell spheres was not observed. Indirect carburization reduces the strain felt by the bonds featuring the larger WC WC and Pt nanoparticles to be reserved, stability toward methanol oxidation. particles and allows the motion of carbon around influencing the eleetrocatalytic performance and 展开更多
关键词 Self-disperse Core-shell structure Carbon-resist Tungsten carbide Methanol oxidation
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