TY - GEN
T1 - Electrochemical preparation of nickel and iron nanoparticles in a hydrophobic ionic liquid
AU - Zhu, Y. L.
AU - Katayama, Y.
AU - Miura, T.
PY - 2010/12/1
Y1 - 2010/12/1
N2 - The preparation of nickel and iron nanoparticles was achieved in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifloromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)2 or Fe(TFSA)2. A potentiostatic cathodic reduction of Ni(II) in Ni(TFSA)2/BMPTFSA at - 2.6 V made the color of the electrolyte change from yellow to black and resulted in formation of Ni nanoparticles, which were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray analysis (EDX). Addition of acetonitrile (ACN) into Ni(TFSA)2/BMPTFSA resulted in a reduction of the mean diameter of Ni nanoparticles from about 3 nm to 1 nm. This may be due to the changes in the coordination environment of the Ni(II) species in the ionic liquid, from [Ni(TFSA)3]- to [Ni(ACN)6]2+. The mean diameter of Fe nanoparticles, which were prepared from Fe(TFSA)2/BMPTFSA, was close to that of Ni nanoparticles.
AB - The preparation of nickel and iron nanoparticles was achieved in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifloromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)2 or Fe(TFSA)2. A potentiostatic cathodic reduction of Ni(II) in Ni(TFSA)2/BMPTFSA at - 2.6 V made the color of the electrolyte change from yellow to black and resulted in formation of Ni nanoparticles, which were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray analysis (EDX). Addition of acetonitrile (ACN) into Ni(TFSA)2/BMPTFSA resulted in a reduction of the mean diameter of Ni nanoparticles from about 3 nm to 1 nm. This may be due to the changes in the coordination environment of the Ni(II) species in the ionic liquid, from [Ni(TFSA)3]- to [Ni(ACN)6]2+. The mean diameter of Fe nanoparticles, which were prepared from Fe(TFSA)2/BMPTFSA, was close to that of Ni nanoparticles.
UR - http://www.scopus.com/inward/record.url?scp=79952648848&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952648848&partnerID=8YFLogxK
U2 - 10.1149/1.3484811
DO - 10.1149/1.3484811
M3 - Conference contribution
AN - SCOPUS:79952648848
SN - 9781566778268
T3 - ECS Transactions
SP - 537
EP - 541
BT - Molten Salts and Ionic Liquids 17
T2 - 17th International Symposium on Molten Salts and Ionic Liquids - 218th ECS Meeting
Y2 - 10 October 2010 through 15 October 2010
ER -