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Single-atom Ru anchored in nitrogen-doped MXene (Ti3C2T: X) as an efficient catalyst for the hydrogen evolution reaction at all pH values

Journal Article


Abstract


  • Precise control of isolated single-atom ruthenium (RuSA) sites supported on nitrogen (N)-doped Ti3C2Tx MXene (N-Ti3C2Tx) through a coordination-assisted strategy is reported. The catalyst displays superior activity toward the hydrogen evolution reaction (HER). The atomic dispersion of RuSA on N-Ti3C2Tx is verified by spherical aberration-corrected electron microscopy and X-ray absorption fine structure measurements. The resultant RuSA-N-Ti3C2Tx catalyst exhibits outstanding catalytic performance with low overpotentials of 23, 27, and 81 mV to achieve a current density of 10 mA cm-2 in 0.5 M H2SO4, 1 M KOH, and 1 M PBS solutions, respectively. In addition, RuSA-N-Ti3C2Tx shows long-term stability with negligible degradation in basic, acidic, and neutral media, which is much better than that of the commercial Pt/C catalyst. Density functional theory calculations suggest that the strong covalent interactions between RuSA and N sites on the Ti3C2Tx MXene support contribute to the exceptional catalytic performance and stability. This work provides a coordination-engineered strategy to effectively modulate the catalytic properties of the MXene family by an atomic-level engineering strategy. This journal is

UOW Authors


  •   Hu, Zhe (external author)
  •   Chou, Shulei (external author)

Publication Date


  • 2020

Citation


  • Liu, H., Hu, Z., Liu, Q., Sun, P., Wang, Y., Chou, S., . . . Zhang, Z. (2020). Single-atom Ru anchored in nitrogen-doped MXene (Ti3C2T: X) as an efficient catalyst for the hydrogen evolution reaction at all pH values. Journal of Materials Chemistry A, 8(46), 24710-24717. doi:10.1039/d0ta09538a

Scopus Eid


  • 2-s2.0-85097715514

Start Page


  • 24710

End Page


  • 24717

Volume


  • 8

Issue


  • 46

Place Of Publication


Abstract


  • Precise control of isolated single-atom ruthenium (RuSA) sites supported on nitrogen (N)-doped Ti3C2Tx MXene (N-Ti3C2Tx) through a coordination-assisted strategy is reported. The catalyst displays superior activity toward the hydrogen evolution reaction (HER). The atomic dispersion of RuSA on N-Ti3C2Tx is verified by spherical aberration-corrected electron microscopy and X-ray absorption fine structure measurements. The resultant RuSA-N-Ti3C2Tx catalyst exhibits outstanding catalytic performance with low overpotentials of 23, 27, and 81 mV to achieve a current density of 10 mA cm-2 in 0.5 M H2SO4, 1 M KOH, and 1 M PBS solutions, respectively. In addition, RuSA-N-Ti3C2Tx shows long-term stability with negligible degradation in basic, acidic, and neutral media, which is much better than that of the commercial Pt/C catalyst. Density functional theory calculations suggest that the strong covalent interactions between RuSA and N sites on the Ti3C2Tx MXene support contribute to the exceptional catalytic performance and stability. This work provides a coordination-engineered strategy to effectively modulate the catalytic properties of the MXene family by an atomic-level engineering strategy. This journal is

UOW Authors


  •   Hu, Zhe (external author)
  •   Chou, Shulei (external author)

Publication Date


  • 2020

Citation


  • Liu, H., Hu, Z., Liu, Q., Sun, P., Wang, Y., Chou, S., . . . Zhang, Z. (2020). Single-atom Ru anchored in nitrogen-doped MXene (Ti3C2T: X) as an efficient catalyst for the hydrogen evolution reaction at all pH values. Journal of Materials Chemistry A, 8(46), 24710-24717. doi:10.1039/d0ta09538a

Scopus Eid


  • 2-s2.0-85097715514

Start Page


  • 24710

End Page


  • 24717

Volume


  • 8

Issue


  • 46

Place Of Publication