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Dual‐Metal Interbonding as the Chemical Facilitator for Single‐Atom Dispersions

Zhou, Yao ; Song, Erhong ; Chen, Wei ; Segre, Carlo U. ; Zhou, Jiadong ; Lin, Yung‐Chang ; Zhu, Chao ; Ma, Ruguang ; Liu, Pan ; Chu, Shufen ; Thomas, Tiju ; Yang, Minghui ; Liu, Qian ; Suenaga, Kazu ; Liu, Zheng ; Liu, Jianjun ; Wang, Jiacheng

Advanced materials (Weinheim), 2020-11, Vol.32 (46), p.e2003484-n/a [Periódico revisado por pares]

Weinheim: Wiley Subscription Services, Inc

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  • Título:
    Dual‐Metal Interbonding as the Chemical Facilitator for Single‐Atom Dispersions
  • Autor: Zhou, Yao ; Song, Erhong ; Chen, Wei ; Segre, Carlo U. ; Zhou, Jiadong ; Lin, Yung‐Chang ; Zhu, Chao ; Ma, Ruguang ; Liu, Pan ; Chu, Shufen ; Thomas, Tiju ; Yang, Minghui ; Liu, Qian ; Suenaga, Kazu ; Liu, Zheng ; Liu, Jianjun ; Wang, Jiacheng
  • Assuntos: Catalysts ; Chemical bonds ; chemical facilitators ; hydrogen evolution reaction ; Hydrogen evolution reactions ; Iron ; Low temperature ; Materials science ; Nanoparticles ; Rhodium ; Selectivity ; single‐atom catalysts ; top‐down strategy
  • É parte de: Advanced materials (Weinheim), 2020-11, Vol.32 (46), p.e2003484-n/a
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    USDOE
  • Descrição: Atomically dispersed catalysts, with maximized atom utilization of expensive metal components and relatively stable ligand structures, offer high reactivity and selectivity. However, the formation of atomic‐scale metals without aggregation remains a formidable challenge due to thermodynamic stabilization driving forces. Here, a top‐down process is presented that starts from iron nanoparticles, using dual‐metal interbonds (RhFe bonding) as a chemical facilitator to spontaneously convert Fe nanoparticles to single atoms at low temperatures. The presence of RhFe bonding between adjacent Fe and Rh single atoms contributes to the thermodynamic stability, which facilitates the stripping of a single Fe atom from the Fe nanoparticles, leading to the stabilized single atom. The dual single‐atom Rh–Fe catalyst renders excellent electrocatalytic performance for the hydrogen evolution reaction in an acidic electrolyte. This discovery of dual‐metal interbonding as a chemical facilitator paves a novel route for atomic dispersion of chemical metals and the design of efficient catalysts at the atomic scale. Dual‐metal (RhFe) interbonding facilitates each metal species to be atomically dispersed. The presence of RhFe bonding between adjacent Fe and Rh single atoms contributes to thermodynamic stability, which facilitates the stripping of a single Fe atom from Fe nanoparticles, leading to a stabilized single atom. The existence of Fe prevents the aggregation of Rh nanoparticles before pyrolysis.
  • Editor: Weinheim: Wiley Subscription Services, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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