Chemical vapor deposition growth of magnesium-doped hexagonal boron nitride films via in situ doping

Singhal, Ranjan; Echeverría, Elena; McIlroy, David N.; Singh, Rajeev

doi:10.1557/s43578-022-00658-3

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…It is also interesting to note that the pore edges are decorated with smaller MgO nanoparticles (NPs), 2–5 nm ( Figure 2 d). It was reported that in the Mg-doped BN, Mg 2+ ions occupy B vacancies [ 37 ], and Mg is bonded to nitrogen [ 50 ]. In oxidized BN, oxygen atoms substitute nitrogen atoms and form B-O bonds [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2023

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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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Section: Resultsmentioning

confidence: 99%