Defective Ni3S2 nanowires as highly active electrocatalysts for ethanol oxidative upgrading

Yufeng Zhang, Wei Zhu*, Jinjie Fang, Zhiyuan Xu, Yanrong Xue, Di Liu, Rui Sui, Qingqing Lv, Xuerui Liu, Yongsheng Wang, Wei Chen*, Zhongbin Zhuang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Electrochemical upgrading of biomass ethanol to value-added chemicals is promising for sustainable society. Here, we synthesize defective Ni3S2 nanowires (NWs), which show high activity towards electrochemical oxidation of ethanol to acetate. The Ni3S2 NWs are formed by the oriented attachment mechanism, and rich defects are introduced during the growth. A low onset potential of 1.31 V and high mass activity of 8,716 mAmgNi−1 at 1.5 V are achieved using the synthesized Ni3S2 NWs toward the ethanol electro-oxidation, which are better than the Ni(OH)2 NWs and the Ni3S2 nanoparticles (NPs). And the selectivity for the acetate generation is ca. 99%. The high activity of Ni3S2 NWs is attributed to the easier oxidation of Ni(II) to the catalytically active Ni(III) species with the promotion from S component and rich defects. These results demonstrate that the defective NWs can be synthesized by the oriented attachment method and the defective Ni3S2 NWs structure as the efficient non-noble metal electrocatalysts for oxidative upgrading of ethanol. [Figure not available: see fulltext.]

Original languageEnglish (US)
Pages (from-to)2987-2993
Number of pages7
JournalNano Research
Volume15
Issue number4
DOIs
StatePublished - Apr 2022

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 21971008) and the Fundamental Research Funds for the Central Universities (buctrc201916, buctrc201823).

Publisher Copyright:
© 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

  • defects
  • electrocatalyst
  • ethanol oxidation
  • nickel sulfide
  • oriented attachment

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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