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Reconstructing Oxygen-Deficient Zirconia with Ruthenium Catalyst on Atomic-Scale Interfaces toward Hydrogen Production

Journal Article · · Advanced Functional Materials
 [1];  [2];  [3];  [3];  [4];  [3];  [5];  [5];  [6];  [7];  [8];  [9];  [3]
  1. Sungkyunkwan Univ., Suwon (Korea, Republic of); Northwestern Univ., Evanston, IL (United States); OSTI
  2. Korea Institute of Science and Technology (KIST), Seoul (Korea, Republic of); Korea Univ., Seoul (Korea, Republic of)
  3. Sungkyunkwan Univ., Suwon (Korea, Republic of)
  4. Korea Institute of Science and Technology (KIST), Seoul (Korea, Republic of)
  5. Incheon National University (Korea, Republic of)
  6. Inha University, Incheon (Korea, Republic of)
  7. Northwestern Univ., Evanston, IL (United States)
  8. Chungnam National Univ., Daejeon (Korea, Republic of)
  9. Korea Institute of Science and Technology (KIST), Seoul (Korea, Republic of); University of Science and Technology (UST), Daejeon (Korea, Republic of); Kyung Hee Univ., Seoul (Korea, Republic of)
Downsizing a catalyst nanoparticle (NP) to a single atom (SA) has proven to be highly effective in increasing catalytic activity and decreasing the amount of catalyst required for various electrochemical reactions. However, insufficient stability of the single-atom site catalysts (SACs) is still a significant challenge for their practical application. Here, SACs firmly bound to stable metal oxide NPs are proposed to dramatically increase the electrochemical activity and stability of SA-based catalysts for hydrogen evolution reaction (HER). Starting from a Ru-infiltrated, Zr-based metal-organic framework (MOF), the tetragonal zirconium oxide (ZrO2-x) NPs-embedded carbon matrix is fabricated as support through facile pyrolysis. Simultaneously, Ru SAs as active sites are well dispersed on the surface of ZrO2-x NPs due to the generation of oxygen vacancies in the tetragonal ZrO2-x. Finally, the Ru-ZrO2-x SAC exhibits a 4–5 times higher mass activity than commercial Pt and Ru catalysts and superior durability due to strong metal-support interaction (SMSI) between Ru atoms and ZrO2-x substrate.
Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-87ER13808
OSTI ID:
2419325
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 29 Vol. 33; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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