Publication details

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

Authors

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

Year of publication 2021
Type Article in Periodical
Magazine / Source Scientific Reports
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.1038/s41598-021-83836-3
Doi http://dx.doi.org/10.1038/s41598-021-83836-3
Keywords Mass spectrometry; Nanoparticles; Nanoscience and technology
Description 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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