Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 9, Pages 2977-2984Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14502f
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Funding
- NSFC [20703016, 21176060]
- Chemical Science Base of Hunan University [J1210040, J1103312]
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Ultrathin PtPdBi tri-metallic nanowires (NWs, diameters ranged from 3 nm to 5 nm) were prepared in a one-pot polyol process in which the molar ratios of the three metals could be tuned depending on the amount of initial precursors. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and elemental mapping revealed that these NWs were alloys with a face-centered cubic crystal structure similar to PtPd alloy. p-Nitrophenol was used as a probe to assess the catalytic activities of the as-prepared PtPdBi NWs. The results indicated that the existence of a small amount of Bi in the PtPdBi alloy efficiently improved its catalytic capability towards the reduction of p-nitrophenol. At the specified Pt : Pd : Bi ratio of 55 : 38 : 7, PtPdBi nanowires showed the best catalytic activity of all the nanomaterials tested (Pt, Pd and PdPd spherical nanoparticles; PtBi and PdBi nanowires) a feature that was attributed to the optimal synergistic effect of the three metallic elements.
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