论文部分内容阅读
A hydrogen evolution-assisted one-pot aqueous approach was developed for facile synthesis of trimetallic Pd Ni Ru alloy nanochain-like networks(Pd Ni Ru NCNs) by only using KBH_4 as the reductant, without any specific additive(e.g. surfactant, polymer, template or seed). The products were mainly investigated by transmission electron microscopy(TEM), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The hierarchical architectures were formed by the oriented assembly growth and the diffusioncontrolled deposition in the presence of many in-situ generated hydrogen bubbles. The architectures had the largest electrochemically active surface area(ECSA) of 84.32 m~2 g~(–1) Pdthan Pd Ni nanoparticles(NPs,65.23 m~2 g~(–1) Pd), Pd Ru NPs(23.12 m~2 g~(–1) Pd), Ni Ru NPs(nearly zero), and commercial Pd black(6.01 m~2 g~(–1) Pd), outperforming the referenced catalysts regarding the catalytic characters for hydrazine oxygen reaction(HOR). The synthetic route provides new insight into the preparation of other trimetallic nanocatalysts in fuel cells.
A hydrogen evolution-assisted one-pot aqueous approach was developed for facile synthesis of trimetallic Pd Ni Ru alloy nanochain-like networks (Pd Ni Ru NCNs) by only using KBH_4 as the reductant, without any specific additive (eg surfactant, polymer, template The products were primarily investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The hierarchical architectures were formed by the oriented assembly growth and the diffusioncontrolled deposition in the (ECs) of 84.32 m ~ 2 g ~ (-1) Pdthan Pd Ni nanoparticles (NPs, 65.23 m ~ 2 g ~ (-1)) were obtained in the presence of many in-situ generated hydrogen bubbles (Pd), Pd Ru NPs (23.12 m ~ 2 g -1 Pd), Ni Ru NPs (nearly zero), and Pd Pd (6.01 m ~ 2 g -1 Pd) regarding the catalytic characters for hydrazine oxygen reaction (HOR). The synthetic route provides new insig ht into the preparation of other trimetallic nanocatalysts in fuel cells.