TY - GEN
T1 - Magnetic nanoparticles and their functionalization by atomic layer deposition
AU - Zhou, Yun
AU - King, David M.
AU - Liang, Xinhua
AU - Weimer, Alan W.
PY - 2008
Y1 - 2008
N2 - Iron nanoparticles were produced in this study via the decomposition of iron oxalate particles, with sizes first reduced by a cryogenic milling process. Due to their high surface area, metal nanoparticles are unstable and spontaneously oxidized when exposed to air. In this study, in situ Atomic Layer Deposition (ALD) was used to passivate and functionalize the iron particles. The decomposition of iron oxalate particles were carried out in a fluidized bed reactor at low pressure. TiO2 thin films were then coated on synthesized iron particles at 100°C with Titanium isopropoxide (TTIP) and H2 O2 , as well as with TiCl4 and H2 O2 . Mass spectrometry was used to monitor the ALD process. The film and the film-iron composite properties were investigated by several analysis methods.
AB - Iron nanoparticles were produced in this study via the decomposition of iron oxalate particles, with sizes first reduced by a cryogenic milling process. Due to their high surface area, metal nanoparticles are unstable and spontaneously oxidized when exposed to air. In this study, in situ Atomic Layer Deposition (ALD) was used to passivate and functionalize the iron particles. The decomposition of iron oxalate particles were carried out in a fluidized bed reactor at low pressure. TiO2 thin films were then coated on synthesized iron particles at 100°C with Titanium isopropoxide (TTIP) and H2 O2 , as well as with TiCl4 and H2 O2 . Mass spectrometry was used to monitor the ALD process. The film and the film-iron composite properties were investigated by several analysis methods.
KW - Atomic layer deposition
KW - Iron oxalate decomposition
KW - Magnetic nanoparticles
KW - Surface passivation and functionalization
UR - https://www.scopus.com/pages/publications/84883631695
M3 - Conference contribution
AN - SCOPUS:84883631695
SN - 0979348897
SN - 9780979348891
T3 - Advances in Powder Metallurgy and Particulate Materials - 2008, Proceedings of the 2008 World Congress on Powder Metallurgy and Particulate Materials, PowderMet 2008
SP - 9326
EP - 9339
BT - Advances in Powder Metallurgy and Particulate Materials - 2008, Proceedings of the 2008 World Congress on Powder Metallurgy and Particulate Materials, PowderMet 2008
T2 - 2008 World Congress on Powder Metallurgy and Particulate Materials, PowderMet 2008
Y2 - 8 June 2008 through 12 June 2008
ER -