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首页> 外文期刊>Electrochimica Acta >Facile synthesis of clean Pt nanoparticles supported on reduced graphene oxide composites: Their growth mechanism and tuning of their methanol electro-catalytic oxidation property
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Facile synthesis of clean Pt nanoparticles supported on reduced graphene oxide composites: Their growth mechanism and tuning of their methanol electro-catalytic oxidation property

机译：还原型氧化石墨烯复合材料上负载的洁净Pt纳米粒子的简便合成：其生长机理和甲醇电催化氧化性能的调节

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摘要

A facile hydrothermal method has been proposed to prepare reduced graphene oxide (RGO) and enhance its reducing ability. For the first time, the spontaneous redox reaction between PtCl_4~(2-) and RGO has been reported and no additional reductants or surfactants were needed. X-ray photoelectron spectroscopy and transmission electron microscope images were used to characterize the synthesized Pt nanoparticles supported on RGO sheet (PtNPs/RGO) composites. The reaction mechanism has been investigated by changing the medium pH of the reaction. We further proved that the electro-catalytic property of PtNPs/RGO could be tuned and, because of the clean, well-dispersed PtNPs and the synergistic effect between the PtNPs and RGO, the PtNPs/RGO expressed higher electro-catalytic activity and better tolerance for methanol oxidization than a commercial Pt/C catalyst.
机译：已经提出了一种简便的水热方法来制备还原的氧化石墨烯（RGO）并增强其还原能力。首次报道了PtCl_4〜（2-）与RGO之间的自发氧化还原反应，不需要其他的还​​原剂或表面活性剂。 X射线光电子能谱和透射电子显微镜图像用于表征RGO薄板（PtNPs / RGO）复合材料上负载的合成Pt纳米颗粒。已经通过改变反应的介质pH来研究反应机理。我们进一步证明，PtNPs / RGO的电催化性能是可以调节的，并且由于干净，分散良好的PtNPs以及PtNPs和RGO之间的协同作用，PtNPs / RGO表现出更高的电催化活性和更好的耐受性与市售Pt / C催化剂相比，可用于甲醇氧化。

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