Confined Catalysis in the g-C3N4/Pt(111) Interface: Feasible Molecule Intercalation, Tunable Molecule–Metal Interaction, and Enhanced Reaction Activity of CO Oxidation
| Autor: | Shujiao Wang, Qiang Wan, Ming’an Yu, Yingxin Feng, Sen Lin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Intercalation (chemistry) Inorganic chemistry Graphitic carbon nitride 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Overlayer Metal chemistry.chemical_compound Adsorption chemistry Chemical engineering visual_art visual_art.visual_art_medium Molecule General Materials Science 0210 nano-technology Nanosheet |
| Zdroj: | ACS Applied Materials & Interfaces. 9:33267-33273 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | The deposition of a two-dimensional (2D) atomic nanosheet on a metal surface has been considered as a new route for tuning the molecule–metal interaction and surface reactivity in terms of the confinement effect. In this work, we use first-principles calculations to systematically explore a novel nanospace constructed by placing a 2D graphitic carbon nitride (g-C3N4) nanosheet over a Pt(111) surface. The confined catalytic activity in this nanospace is investigated using CO oxidation as a model reaction. With the inherent triangular pores in the g-C3N4 overlayer being taken advantage of, molecules such as CO and O2 can diffuse to adsorb on the Pt(111) surface underneath the g-C3N4 overlayer. Moreover, the mechanism of intercalation is also elucidated, and the results reveal that the energy barrier depends mainly on the properties of the molecule and the channel. Importantly, the molecule–catalyst interaction can be tuned by the g-C3N4 overlayer, considerably reducing the adsorption energy of CO on Pt(111)... |
| Databáze: | OpenAIRE |
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