J 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.

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

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.869

RIV identification code

RIV/00216224:14310/17:00094575

Organization unit

Faculty of Science

UT WoS

000392319600001

Keywords in English

Mass spectrometry;Nanoparticles;Nanoflowers;Plasma-assisted;Stainless steel;Laser desorption ionization

Tags

Tags

International impact, Reviewed
Změněno: 6/4/2018 11:02, Ing. Nicole Zrilić

Abstract

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.

Links

ED2.1.00/03.0086, research and development project
Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
GA13-05082S, research and development project
Name: Analýza a aplikace plazmatických procesů pro přípravu tenkých vrstev amorfních chalkogenidů
Investor: Czech Science Foundation
LO1411, research and development project
Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)
Investor: Ministry of Education, Youth and Sports of the CR