2017
Laser Desorption Ionization Quadrupole Ion Trap Time-of-Flight Mass Spectrometry of AumFen+/– Clusters Generated from Gold-Iron Nanoparticles and their Giant Nanoflowers. Electrochemical and/or Plasma Assisted Synthesis
MAWALE, Ravi; Mayuri Vilas AUSEKAR; David PAVLIŇÁK; Oleksandr GALMIZ; Pavel KUBÁČEK et al.Základní údaje
Originální název
Laser Desorption Ionization Quadrupole Ion Trap Time-of-Flight Mass Spectrometry of AumFen+/– Clusters Generated from Gold-Iron Nanoparticles and their Giant Nanoflowers. Electrochemical and/or Plasma Assisted Synthesis
Autoři
MAWALE, Ravi; Mayuri Vilas AUSEKAR; David PAVLIŇÁK; Oleksandr GALMIZ; Pavel KUBÁČEK a Josef HAVEL
Vydání
Journal of The American Society for Mass Spectrometry, New York, Springer, 2017, 1044-0305
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.869
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/17:00094575
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Mass spectrometry;Nanoparticles;Nanoflowers;Plasma-assisted;Stainless steel;Laser desorption ionization
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 6. 4. 2018 11:02, Ing. Nicole Zrilić
Anotace
V originále
Gold nanoparticles (NP) with average diameter 100 nm synthesized from tetrachloroauric acid solution using stainless steel as a reducing agent were found to contain iron. Applying simultaneously high frequency (HF) plasma discharge in solution during the electrochemical reduction, giant gold-iron nanoflowers with average size 1000–5000 nm were formed. Scanning electron microscopy (SEM) shows the morphology of the nanopowders produced as polygonal yet nearly spherical, whereas iron content in both products determined by energy dispersive X-ray analysis (EDX) was found to be at 2.5 at%. Laser desorption ionization (LDI) of both nanomaterials and mass spectrometric analysis show the formation of AumFen+/– (m = 1–35; n = 1–3) clusters. Structure of few selected clusters in neutral or monocharged forms were computed by density functional theory (DFT) calculations and it was found that typical distances of an iron nucleus from adjacent gold nuclei lie in the interval 2.5 to 2.7 A. Synthetized Au-Fe nanoparticles were found stable for at least 2 mo at room temperature (even in aqueous solution) without any stabilizing agent. Produced Au-Fe nanoparticles in combination with standard MALDI matrices enhance ionization of peptides and might find use in nanomedicine.
Návaznosti
| ED2.1.00/03.0086, projekt VaV |
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| GA13-05082S, projekt VaV |
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| LO1411, projekt VaV |
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