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Science China Materials

, Volume 62, Issue 1, pp 115–121 | Cite as

A simple electrochemical method for conversion of Pt wires to Pt concave icosahedra and nanocubes on carbon paper for electrocatalytic hydrogen evolution

  • Zhimin Luo (罗志敏)
  • Chaoliang Tan (谭超良)
  • Zhuangchai Lai (赖壮钗)
  • Xiao Zhang (张晓)
  • Junze Chen (陈君泽)
  • Ye Chen (陈也)
  • Bo Chen (陈博)
  • Yue Gong (拱越)
  • Zhicheng Zhang (张志成)
  • Xuejun Wu (吴雪军)
  • Bing Li (李冰)
  • Yun Zong (宗昀)
  • Lin Gu (谷林)
  • Hua Zhang (张华)
Articles
  • 69 Downloads

Abstract

In the controlled synthesis of noble metal nanostructures using wet-chemical methods, normally, metal salts/complexes are used as precursors, and surfactants/ ligands are used to tune/stabilize the morphology of nanostructures. Here, we develop a facile electrochemical method to directly convert Pt wires to Pt concave icosahedra and nanocubes on carbon paper through the linear sweep voltammetry in a classic three-electrode electrochemical cell. The Pt wire, carbon paper and Ag/AgCl (3 mol L−1 KCl) are used as the counter, working and reference electrodes, respectively. Impressively, the formed Pt nanostructures exhibit better electrocatalytic activity towards the hydrogen evolution compared to the commercial Pt/C catalyst. This work provides a simple and effective way for direct conversion of Pt wires into well-defined Pt nanocrystals with clean surface. We believe it can also be used for preparation of other metal nanocrystals, such as Au and Pd, from their bulk materials, which could exhibit various promising applications.

Keywords

noble metals electrochemical conversion concave nanostructures electrocatalysis hydrogen evolution 

电化学方法把铂丝转化到碳布上形成铂二十面体和纳米立方体并用于电催化产氢

摘要

湿化学法可控合成贵金属纳米结构通常需要金属盐或金属配合物作为前体, 并利用表面活性剂和配体来调节和稳定纳米结构的形 貌. 本文通过一种简单的电化学方法(线性扫描伏安法), 在三电极体系中直接把铂线转化到碳布表面形成铂二十面体和纳米立方体. 在三 电极体系中, 铂线、碳布和Ag/AgCl(3 mol L−1 KCl)分别作为对电极、工作电极和参比电极. 与商业Pt/C催化剂相比, 制备的铂二十面体和 纳米立方体展现出优越的电催化活性. 该方法简单、有效, 可拓展到其他贵金属纳米结构的合成和应用研究. 如通过这种电化学方法直接 将Au、Pd等块体材料转化成具有各种潜在应用的Au、Pd等纳米结构.

Notes

Acknowledgements

This work was supported by the Ministry of Education under AcRF Tier 2 (ARC 19/15, No. MOE2014-T2-2-093; MOE2015-T2-2-057; MOE2016-T2-2-103; MOE2017-T2-1-162) and AcRF Tier 1 (2016-T1-001-147; 2016-T1-002-051; 2017-T1-001-150; 2017-T1-002-119), and Nanyang Technological University under Start- Up Grant (M4081296.070.500000) in Singapore. We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy (and/or X-ray) facilities.

Supplementary material

40843_2018_9315_MOESM1_ESM.pdf (668 kb)
A simple electrochemical method for conversion of Pt wires to Pt concave icosahedra and nanocubes on carbon paper for electrocatalytic hydrogen evolution

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Zhimin Luo (罗志敏)
    • 1
  • Chaoliang Tan (谭超良)
    • 1
  • Zhuangchai Lai (赖壮钗)
    • 1
  • Xiao Zhang (张晓)
    • 1
  • Junze Chen (陈君泽)
    • 1
  • Ye Chen (陈也)
    • 1
  • Bo Chen (陈博)
    • 1
  • Yue Gong (拱越)
    • 2
  • Zhicheng Zhang (张志成)
    • 1
  • Xuejun Wu (吴雪军)
    • 1
  • Bing Li (李冰)
    • 3
  • Yun Zong (宗昀)
    • 3
  • Lin Gu (谷林)
    • 2
  • Hua Zhang (张华)
    • 1
  1. 1.Center for Programmable Materials, School of Materials Science and EngineeringNanyang Technological UniversitySingaporeSingapore
  2. 2.Beijing National Laboratory for Condensed Matter Physics, Institute of PhysicsChinese Academy of SciencesBeijingChina
  3. 3.Institute of Materials Research and EngineeringA*STAR (Agency for Science, Technology and Research)SingaporeSingapore

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