Corresponding Author

Liang-liang ZOU(zoull@sari.ac.cn);
Hui YANG(yangh@sari.ac.cn)


This paper describes a simple CO-assisted reduction approach for the controllable synthesis of ultrathin Pd nanowires along the one-dimensional (1D) direction. Ultrathin Pt films from one to several atomic layers were successfully decorated onto ultrathin Pd nanowires by utilizing Cu UPD deposition, and followed by in-situ redox replacement reaction of UPD Cu by Pt. The core–shell structure and composition of the Pd@Pt ultrathin nanowires have been verified using transmission electron microscopy and energy dispersive X-ray spectrometry. The core–shell Pd@Pt ultrathin nanowires exhibited comparative electrocatalytic activity and improved durability for the oxygen reduction reaction in comparison with commercial Pt black. The enhanced durability of the core-shell Pd@Pt catalyst could be ascribed to 1D structural stability.

Graphical Abstract


oxygen reduction reaction, electrocatalysis, Pd core/Pt shell, ultrathin nanowire, durability

Publication Date


Online Available Date


Revised Date


Received Date



[1] Watanabe M, Donald A T, Mitsuru W, et al. Overview of recent developments in oxygen reduction electrocatalysis [J]. Electrochimica Acta, 2012, 84: 187-201.

[2] Xia B Y, Hao B W, Ya Y, et al. Ultrathin and ultralong single-crystal platinum nanowire assemblies with highly stable electrocatalytic activity [J]. Journal of the American Chemical Society, 2013, 135(25): 9480-9485.

[3] Shao M H, Amra P, Jonathan O. Enhanced oxygen reduction activity of platinum monolayer with a gold interlayer on palladium [J]. The Journal of Physical Chemistry, 2014, 118(32): 18505-18509.

[4] Shao Y Y, Yin G P, Gao Y Z. Understanding and approaches for the durability issues of Pt-based catalysts for PEM fuel cell [J]. Journal of Power Sources, 2007, 171(2): 558-566.

[5] Jeremy P M, Robet M D. Model of carbon corrosion in PEM fuel cells [J]. Journal of The Electrochemical Society, 2006, 153(8): A1432-A1442.

[6] Duan B, Yang B B, Ren F F, et al. Facile synthesis of PdNi nanowire networks supported on reduced graphene oxide with enhanced catalytic performance for formic acid oxidation [J]. Journal of Materials Chemistry A, 2015, 3(26): 14001-14006.

[7] Pang X C, He Y J, Jung J C, et al. 1D nanocrystals with precisely controlled dimensions, compositions [J]. Science, 2016, 353(6305): 1268-1272.

[8] Koenigsmann C, Scofield M E, Liu H Q, et al. Designing enhanced one-dimensional electrocatalysts for the oxygen reduction reaction: probing size- and composition- dependent electrocatalytic behavior in noble metal nanowires [J]. The Journal of Physical Chemistry Letters, 2012, 3(22):3385-3398.

[9] Koenigsmann C, Wong S S. One-dimensional noble metal electrocatalysts: a promising structural paradigm for direct methanol fuel cells [J]. Energy & Environ Science, 2011, 4(4): 1161-1176.

[10] Li F M, Ji Y G, Wang S M, et al. Ethylenediaminetetraacetic acid mediated synthesis of palladium nanowire networks and their enhanced electrocatalytic performance for the hydrazine oxidation reaction [J]. Electrochimica Acta, 2015, 176: 125-129.

[11] Koenigsmann C, Zhou W P, Adzic R R, et al. Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires [J]. Nano Letters, 2010, 10(8): 2806-2811.

[12] Cheng F, Wang H, Sun Z H, et al. Electrodeposited fabrication of highly ordered Pd nanowire arrays for alcohol electrooxidation [J]. Electrochemistry Communications, 2008, 10(5): 798-801.

[13] Fu, G T, Jiang X, Guo M X, et al. Highly branched platinum nanolance assemblies by polyallylamine functionalization as superior active, stable, and alcohol-tolerant oxygen reduction electrocatalysts [J]. Nanoscale, 2014, 6(14): 8226-8234.

[14] Song P, Li S S, He L L, et al. Facile large-scale synthesis of Au-Pt alloyed nanowire networks as efficient electrocatalysts for methanol oxidation and oxygen reduction reactions [J], RSC Advances, 2015, 5 :87061-87068.

[15] Chang F L, Shan S Y, Petkov V, et al. Composition tunability and (111)-dominant facets of ultrathin platinum-gold alloy nanowires toward enhanced electrocatalysis [J]. Journal of the American Chemical Society, 2016, 138(37): 12166-12175.

[16] Tan, Y M, Fan J M, Chen J X, et al. Au/Pt and Au/Pt3Ni nanowires as self-supported electrocatalysts with high activity and durability for oxygen reduction [J]. Chemical Communications (Cambridage, England), 2011, 47(42): 11624-11626.

[17] Zhao X, Zhang J, Wang L J, et al. Ultrathin PtPdCu nanowires fused porous architecture with 3D molecular accessibility: an active and durable platform for methanol oxidation [J]. ACS Applied Materials & Interfaces, 2015. 7(47): 26333-26339.

[18] Hong W, Wang T E, Wang E R. Scalable synthesis of Cu-based ultrathin nanowire networks and their electrocatalytic properties [J]. Nanoscale, 2016, 8(9): 4927-4932.

[19] Choi R, Choi S, Choi C H, et al. Designed synthesis of well-defined Pd@Pt core-shell nanoparticles with controlled shell thickness as efficient oxygen reduction electrocatalysts [J]. Chemistry - A European Journal, 2013, 19(25): 8190-8198.

[20] Koenigsmann C, Sutter E, Chiesa T A, et al. Highly enhanced electrocatalytic oxygen reduction performance observed in bimetallic palladium-based nanowires prepared under ambient, surfactantless conditions [J]. Nano Letters, 2012, 12(4): 2013-2020.

[21] Ma J W, Habrioux A, Lou Y, et al. Electronic interaction between platinum nanoparticles and nitrogen-doped reduced graphene oxide: effect on the oxygen reduction reaction [J]. Journal of Materials Chemistry A, 2015, 3(22):11891-11904.

[22] Inoue H S, Sakai R, Kuwahara T, et al. Simple preparation of Pd core nanoparticles for Pd core/Pt shell catalyst and evaluation of activity and durability for oxygen reduction reaction [J]. Catalysts 2015,5:1375-1387.

[23] Wang J X, Inada H, Wu L J, et al. Oxygen reduction on well-defined core-shell nanocatalysts: particle size, facet, and Pt shell thickness effects [J]. Journal of the American Chemical Society. 2009, 131:17298-17302.

[24] Zhang H Y(张海艳), Cao J H(曹春晖), Zhao J(赵健), et al. Recent development of Pt-based core-shell structured electrocatalysts in fuel cells [J]. Chinese Journal of Catalysis(催化学报), 2012, 33(2):222-229.

[25] Chen D, Chen Y, Dang D, et al. High performance of core-shell structured Ir@Pt/C catalyst prepared by a facile pulse electrochemical deposition [J]. Electrochemistry Communications, 2014, 46:115-119.

[26] Jeon T Y, Pinna N, Yoo S J, et al. selective deposition of Pt onto supported metal clusters for fuel cell electrocatalysts [J]. Nanoscale, 2012, 4(20): 6461-6169.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.