Cryogenic Carbon Monoxide Oxidation on Cuprous Oxide
Artikel i vetenskaplig tidskrift, 2025
Performing oxidation reactions at low temperatures using earth-abundant materials is crucial for advancing solutions for sustainable chemistry. CO oxidation serves as a benchmark reaction to characterize oxidation and to advance fundamental concepts in surface chemistry. While there are several examples of CO oxidation occurring on metal oxides at low temperatures, from 300 K to ∼200 K, reactivity in the cryogenic temperature regime typically requires a metal nanoparticle on a metal oxide. Here, we show oxygen atoms on the (111) facet of Cu2O react with CO to form CO2 at temperatures below 100 K. Combining spectroscopic experimental evidence with calculations, we propose a low barrier path for CO oxidation at reconstructed surface sites on Cu2O(111). This finding is a rare example of an earth-abundant metal oxide, in this case copper, that can provide highly reactive multifunctional sites, enabling both adsorption and reaction fundamental steps toward the efficient heterogeneous oxidation of chemicals.
Surface chemistry
CO oxidation
Density functional calculations
IRRAS
Cuprous oxide
Författare
Burcu Karagoz
Diamond Light Source
Tianhao Hu
Stony Brook University
Joakim Halldin Stenlid
Chalmers, Kemi och kemiteknik, Kemi och biokemi
Alba Nova Universitetscentrum
Stanford University
Kungliga Tekniska Högskolan (KTH)
Xiaoming Hu
Kungliga Tekniska Högskolan (KTH)
Markus Soldemo
Alba Nova Universitetscentrum
Kungliga Tekniska Högskolan (KTH)
Frank Abild-Pedersen
Stanford University
Kess Marks
Alba Nova Universitetscentrum
Henrik Öström
Alba Nova Universitetscentrum
Dario Stacchiola
Brookhaven National Laboratory
Jonas Weissenrieder
Kungliga Tekniska Högskolan (KTH)
Ashley R. Head
Brookhaven National Laboratory
Angewandte Chemie
14337851 (ISSN) 15213773 (eISSN)
Vol. In PressÄmneskategorier (SSIF 2025)
Materialkemi
Oorganisk kemi
Yt- och korrosionsteknik
Drivkrafter
Hållbar utveckling
Styrkeområden
Energi
Materialvetenskap
DOI
10.1002/anie.202515673
PubMed
41208450