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首页> 外文期刊>RSC Advances >Electrodeposition of PtNPs on the LBL assembled multilayer films of (PDDA-GS/PEDOT:PSS)n and their electrocatalytic activity toward methanol oxidation
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Electrodeposition of PtNPs on the LBL assembled multilayer films of (PDDA-GS/PEDOT:PSS)n and their electrocatalytic activity toward methanol oxidation

机译：PtNPs在（PDDA-GS / PEDOT：PSS） n 的LBL组装多层膜上的电沉积及其对甲醇氧化的电催化活性

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In the present work, PDDA-functionalized graphene sheets (PDDA-GS) were prepared by reduction with hydrazine hydrate in situ in the presence of poly(diallyldimethylammonium chloride) (PDDA). The (PDDA-GS/PEDOT:PSS)n multilayer films were fabricated by a layer-by-layer self-assembly technique based on the electrostatic interaction between positively charged PDDA-GS and negatively charged poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The self-assembly process was characterized by ultraviolet-visible spectroscopy (UV-vis). Pt nanoparticles were electrodeposited in situ on the multilayer films. X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM) were used to characterize the properties of Pt/[(PDDA-GS/PEDOT:PSS)n] multilayer films. Cyclic voltammetry and chronoamperometry were used to study the electrocatalytic activity of Pt/[(PDDA-GS/PEDOT:PSS)n] multilayer films towards methanol oxidation. The results indicated that Pt/[(PDDA-GS/PEDOT:PSS)n] showed high electrocatalytic activity toward methanol oxidation and good tolerance toward carbon monoxide (CO) poisoning. This novel support for Pt nanoparticle catalysts will be promising in the fabrication of fuel cell electrodes and other catalytic devices.
机译：在目前的工作中，通过在聚二烯丙基二甲基氯化铵（PDDA）存在下用水合肼原位还原来制备PDDA-官能化的石墨烯片材（PDDA-GS）。 （PDDA-GS / PEDOT：PSS） n 多层膜是通过基于带正电的PDDA-GS与带负电的聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）之间的静电相互作用。自组装过程的特征在于紫外可见光谱（UV-vis）。将Pt纳米颗粒原位电沉积在多层膜上。利用X射线衍射（XRD）分析和场发射扫描电子显微镜（FE-SEM）表征了Pt / [（PDDA-GS / PEDOT：PSS） n ]多层膜。循环伏安法和计时电流法研究了Pt / [（PDDA-GS / PEDOT：PSS） n ]多层膜对膜的电催化活性。甲醇氧化。结果表明，Pt / [（PDDA-GS / PEDOT：PSS） n ]对甲醇氧化表现出较高的电催化活性，对甲醇的耐受性良好。一氧化碳（CO）中毒。 Pt纳米颗粒催化剂的这种新型载体在燃料电池电极和其他催化装置的制造中将很有前途。

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