Chang L, Cheng D, Sementa L, Fortunelli A. Hydrogen evolution reaction (HER) on Au@Ag ultrananoclusters as electro-catalysts.
NANOSCALE 2018;
10:17730-17737. [PMID:
30209457 DOI:
10.1039/c8nr06105j]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We propose and investigate computationally Ag-Au subnanometer clusters as catalysts for the hydrogen evolution reaction (HER). Focusing on Ag12Au, we conduct a complete first-principles study of the HER process on this Au@Ag ultrananocatalyst. After determining the hydrogen-saturated resting state under standard conditions as Ag12AuH11, HER reaction energies and barriers are predicted also including solvent effects using both implicit and explicit models. We find that Ag12Au is a good candidate as a HER catalyst, with good stability and an overall reaction energy barrier of 0.89 eV as an upper bound. We also draw indications for the design of HER subnanometer catalysts.
Collapse