Laser ablation synthesis of metal-doped gold clusters from composites of gold nanoparticles with metal organic frameworks

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Publikace nespadá pod Lékařskou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

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PEČINKA Lukáš PENA-MENDEZ Eladia Maria CONDE Jose Elias HAVEL Josef

Rok publikování 2021
Druh Článek v odborném periodiku
Časopis / Zdroj Scientific Reports
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://doi.org/10.1038/s41598-021-83836-3
Doi http://dx.doi.org/10.1038/s41598-021-83836-3
Klíčová slova Mass spectrometry; Nanoparticles; Nanoscience and technology
Popis Metal-doped gold clusters, mainly cages, are receiving rapidly increasing attention due to their tunable catalytic properties. Their synthesis is mostly based on complex procedures, including several steps. In this work, via adsorption of gold nanoparticles (AuNPs) from aqueous solution to MOF (metal organic frameworks) of M=Co, Cu, Ni, and Zn with various linkers the {AuNPs, MOF} composites were prepared. These composites were used for laser ablation synthesis (LAS) using a common mass spectrometer. Several series of positively and negatively charged AumMn+/- clusters were observed in mass spectra and their stoichiometry (m=1-35, n=1-5) was determined. For each dopant (Co, Cu, Ni, and Zn) similar to 50 different clusters were identified in positive, as well as in negative ion modes. About 100 of these clusters were proposed to be endohedral metal-doped gold cages (for m>12). The developed approach represents a simple procedure for generating metal-doped gold clusters or endohedral metal-doped gold cages materials with potential applications in medicine and/or electronics.
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