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Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction

Micron-sized supports of catalytically active nanoparticles (NPs) can become a good alternative to nanocarriers if their structure is properly tuned. Here, we show that a combination of simple and easily scalable methods, such as defect engineering and polyol synthesis, makes it possible to obtain A...

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Autores principales: Konopatsky, Anton S., Leybo, Denis V., Kalinina, Vladislava V., Zilberberg, Igor L., Antipina, Liubov Yu., Sorokin, Pavel B., Shtansky, Dmitry V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863069/
https://www.ncbi.nlm.nih.gov/pubmed/36676207
http://dx.doi.org/10.3390/ma16020470
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author Konopatsky, Anton S.
Leybo, Denis V.
Kalinina, Vladislava V.
Zilberberg, Igor L.
Antipina, Liubov Yu.
Sorokin, Pavel B.
Shtansky, Dmitry V.
author_facet Konopatsky, Anton S.
Leybo, Denis V.
Kalinina, Vladislava V.
Zilberberg, Igor L.
Antipina, Liubov Yu.
Sorokin, Pavel B.
Shtansky, Dmitry V.
author_sort Konopatsky, Anton S.
collection PubMed
description Micron-sized supports of catalytically active nanoparticles (NPs) can become a good alternative to nanocarriers if their structure is properly tuned. Here, we show that a combination of simple and easily scalable methods, such as defect engineering and polyol synthesis, makes it possible to obtain Ag and MgO nanoparticles supported on defective hexagonal BN (h-BN) support with high catalytic activity in the CO oxidation reaction. High-temperature annealing in air of Mg-containing (<0.2 at.%) h-BN micropellets led to surface oxidation, the formation of hexagonal-shaped surface defects, and defect-related MgO NPs. The enhanced catalytic activity of Ag/MgO/h-BN materials is attributed to the synergistic effect of h-BN surface defects, ultrafine Ag and MgO NPs anchored at the defect edges, and MgO/Ag heterostructures. In addition, theoretical simulations show a shift in the electron density from metallic Ag towards MgO and the associated decrease in the negative charge of oxygen adsorbed on the Ag surface, which positively affects the catalytic activity of the Ag/MgO/h-BN material.
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spelling pubmed-98630692023-01-22 Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction Konopatsky, Anton S. Leybo, Denis V. Kalinina, Vladislava V. Zilberberg, Igor L. Antipina, Liubov Yu. Sorokin, Pavel B. Shtansky, Dmitry V. Materials (Basel) Article Micron-sized supports of catalytically active nanoparticles (NPs) can become a good alternative to nanocarriers if their structure is properly tuned. Here, we show that a combination of simple and easily scalable methods, such as defect engineering and polyol synthesis, makes it possible to obtain Ag and MgO nanoparticles supported on defective hexagonal BN (h-BN) support with high catalytic activity in the CO oxidation reaction. High-temperature annealing in air of Mg-containing (<0.2 at.%) h-BN micropellets led to surface oxidation, the formation of hexagonal-shaped surface defects, and defect-related MgO NPs. The enhanced catalytic activity of Ag/MgO/h-BN materials is attributed to the synergistic effect of h-BN surface defects, ultrafine Ag and MgO NPs anchored at the defect edges, and MgO/Ag heterostructures. In addition, theoretical simulations show a shift in the electron density from metallic Ag towards MgO and the associated decrease in the negative charge of oxygen adsorbed on the Ag surface, which positively affects the catalytic activity of the Ag/MgO/h-BN material. MDPI 2023-01-04 /pmc/articles/PMC9863069/ /pubmed/36676207 http://dx.doi.org/10.3390/ma16020470 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Konopatsky, Anton S.
Leybo, Denis V.
Kalinina, Vladislava V.
Zilberberg, Igor L.
Antipina, Liubov Yu.
Sorokin, Pavel B.
Shtansky, Dmitry V.
Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title_full Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title_fullStr Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title_full_unstemmed Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title_short Synergistic Catalytic Effect of Ag and MgO Nanoparticles Supported on Defective BN Surface in CO Oxidation Reaction
title_sort synergistic catalytic effect of ag and mgo nanoparticles supported on defective bn surface in co oxidation reaction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863069/
https://www.ncbi.nlm.nih.gov/pubmed/36676207
http://dx.doi.org/10.3390/ma16020470
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