Diulus, JT;
Novotny, Z;
Dongfang, N;
Beckord, J;
Al-Hamdani, Y;
Comini, N;
Muntwiler, M;
... Osterwalder, J; + view all
(2024)
h-BN/Metal-Oxide Interface Grown by Intercalation: A Model System for Nano-Confined Catalysis.
The Journal of Physical Chemistry C
, 128
(12)
pp. 5156-5167.
10.1021/acs.jpcc.3c07828.
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Abstract
Deposition of two-dimensional (2D) materials onto catalyst surfaces is known to alter the adsorption energies of active sites due to the nanoconfinement effect. Traditionally, these 2D catalyst heterostructures were prepared by depositing a 2D material onto a pristine metallic surface. Preparing well-defined 2D monolayers, instead, on metal-oxide surfaces is challenging, although it is possible via O2 intercalation by oxidizing a metal substrate underneath. Several studies demonstrate this intercalative behavior of 2D covers, however, without the preparation of ordered structures, which are imperative for defining fundamental reaction mechanisms in confined space. We report the successful preparation and characterization of a well-defined, ultrathin cuprous oxide-like film grown between h-BN and Cu(111). The confined surface oxide adopts a “Cu2O-like” structure resembling the well-studied “44” Cu2O structure, although the oxidation temperature is surprisingly lower than its uncovered oxide counterpart and the h-BN layer remains intact following oxidation. Our experimental results, backed by theoretical simulations, outline the development of a heterostructure with an h-BN/metal-oxide interface as a model system, utilizing a preparation method likely transferable to a wide range of 2D/metal heterostructures and opening the door to new catalyst designs.
| Type: | Article |
|---|---|
| Title: | h-BN/Metal-Oxide Interface Grown by Intercalation: A Model System for Nano-Confined Catalysis |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.jpcc.3c07828 |
| Publisher version: | http://dx.doi.org/10.1021/acs.jpcc.3c07828 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Heterostructures, Layers, Nitrides, Oxidation, Oxides |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10192943 |
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