One-Pot Synthesis of Hierarchical Flower-Like Pd-Cu Alloy Support on Graphene Towards Ethanol Oxidation

Abstract

The synergetic effect of alloy and morphology of nanocatalysts play critical roles towards ethanol electrooxidation. In this work, we developed a novel electrocatalyst fabricated by one-pot synthesis of hierarchical flower-like palladium (Pd)-copper (Cu) alloy nanocatalysts supported on reduced graphene oxide (Pd-Cu(F)/RGO) for direct ethanol fuel cells. The structures of the catalysts were characterized by using scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectrometer (XPS). The as-synthesized Pd-Cu(F)/RGO nanocatalyst was found to exhibit higher electrocatalytic performances towards ethanol electrooxidation reaction in alkaline medium in contrast with RGO-supported Pd nanocatalyst and commercial Pd black catalyst in alkaline electrolyte, which could be attributed to the formation of alloy and the morphology of nanoparticles. The high performance of nanocatalyst reveals the great potential of the structure design of the supporting materials for the future fabrication of nanocatalysts.

Well‐Defined Platinum Surfaces for the Ethanol Oxidation Reaction

“…In our opinion, this work is of great relevance because of the incorporation of Cu in the cubic structure of the noble metals without perturbing the structure of the NPs, which allows not only higher activities but also a cheaper catalyst. However, although many authors have synthesized polycrystalline NPs with different shapes (nanoflowers, nanorings, nanodendrites, nanogarlands…) to be used in the EOR, there are not works using metal NPs enclosed predominantly by high‐index facets supported on materials with a well‐defined nanoarchitecture.…”

Color removal from wastewater using a synthetic high-performance antifouling GO-CPTMS@Pd-TKHPP/polyether sulfone nanofiltration membrane

“…4, the EDX analysis of nanosheets (GO-CPTMS@Pd-TKHPP) displayed the attendance of the anticipation elements in the nanosheets of GO such as silicon, oxygen, palladium, nitrogen, and carbon. As can been seen, the element distribution of the Si-Pd/GO is approximately 1.43 (Zhang et al 2017).…”

Color Removal from Wastewater using a Synthetic High Performance Antifouling GO-CPTMS@Pd-TKHPP/Polyether Sulfone Nanofiltration Membrane

“…4, the EDX analysis of nanosheets (GO-CPTMS@Pd-TKHPP) displayed the attendance of the anticipation elements in the nanosheets of GO such as silicon, oxygen, palladium, nitrogen, and carbon. As can been seen, the element distribution of the Si-Pd/GO is approximately 1.43 (Zhang et al 2017). XRD pattern of GO-CPTMS@Pd-TKHPP as nanostructure exhibits peaks at 2θ = 40.4, 46.8, 68 and 74.1° which correspond to (111), ( 200), ( 220) and ( 331) crystalline planes of Pd, respectively, illustrated that Pd element does not exist in the form of Pd(II) and it was shown Pd (0) (Fig.…”