MAWALE, Ravi, Mayuri Vilas AUSEKAR, David PAVLIŇÁK, Oleksandr GALMIZ, Pavel KUBÁČEK and Josef HAVEL. 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. Journal of The American Society for Mass Spectrometry, New York: Springer, 2017, vol. 28, No 2, p. 215-223. ISSN 1044-0305. doi:10.1007/s13361-016-1547-1.
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Basic information
Original name 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
Authors MAWALE, Ravi (356 India, belonging to the institution), Mayuri Vilas AUSEKAR (356 India, belonging to the institution), David PAVLIŇÁK (203 Czech Republic, belonging to the institution), Oleksandr GALMIZ (804 Ukraine, belonging to the institution), Pavel KUBÁČEK (203 Czech Republic, belonging to the institution) and Josef HAVEL (203 Czech Republic, guarantor, belonging to the institution).
Edition Journal of The American Society for Mass Spectrometry, New York, Springer, 2017, 1044-0305.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10305 Fluids and plasma physics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW odkaz na článek
Impact factor Impact factor: 2.869
RIV identification code RIV/00216224:14310/17:00094575
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1007/s13361-016-1547-1
UT WoS 000392319600001
Keywords in English Mass spectrometry;Nanoparticles;Nanoflowers;Plasma-assisted;Stainless steel;Laser desorption ionization
Tags NZ, rivok
Tags International impact, Reviewed
Changed by Changed by: Ing. Nicole Zrilić, učo 240776. Changed: 6/4/2018 11:02.
Abstract
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.
Links
ED2.1.00/03.0086, research and development projectName: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
GA13-05082S, research and development projectName: Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů
Investor: Czech Science Foundation, Standard Projects
LO1411, research and development projectName: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)
Investor: Ministry of Education, Youth and Sports of the CR, National Feasibility Programme I
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