کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4985401 | 1454508 | 2017 | 8 صفحه PDF | دانلود رایگان |
HypothesisTemplate-free and surfactant-free strategies are highly desirable, which might be used for high efficient platinum catalyst developments.ExperimentsIn this work, a facile one step photochemical synthesis method was developed to prepare sponge-like porous platinum. The present synthesis was performed via ultraviolet light irradiation on a K2PtCl4 aqueous solution at ambient condition. The final pore sizes were in the range of 1-3Â nm. The walls of the pores were formed with platinum nanoparticles of 3-5Â nm average diameters. For comparisons, pluronic F127 was introduced into the reaction solutions as a surfactant, and sponge-like and dendritic-like platinum nanostructures were obtained. The catalytic activities of these platinum nanomaterials were studied with both menthol oxidation and 4-nitrophenol reduction.FindingsThe sponge-like platinum synthesized without surfactant exhibited higher catalytic activities than the porous platinum with surfactant and the commercial platinum black.
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Journal: Journal of Colloid and Interface Science - Volume 487, 1 February 2017, Pages 60-67