TY - GEN
T1 - Process intensification strategies for the synthesis of superparamagnetic nanoparticles and fabrication of nano-hybrid
AU - Chin, Suk Fun
AU - Swaminathan Iyer, K.
AU - Raston, Colin L.
AU - Saunders, Martin
PY - 2008/10/13
Y1 - 2008/10/13
N2 - Continuous flow spinning disc processing (SDP), which has extremely rapid mixing under plug flow conditions, effective heat and mass transfer, allowing high throughput with low wastage solvent efficiency, is effective in gaining access to superparamagnetic Fe3O4 nanoparticles at room temperature. These are formed by passing ammonia gas over a thin aqueous film of Fe2+/3+ which is introduced through a jet feed close to the centre of a rapidly rotating disc (500 to 2500 rpm), the particle size being controlled with a narrow size distribution over the range 5 nm to 10 nm, and the material having very high saturation magnetizations, in the range 68-78 emu g -1. SDP also shown to be effective for fabrication of superparamagnetic carbon nanotubes composite. Ultra fine (2-3 nm) magnetite (Fe3O4) nanoparticles were uniformly deposited on single-walled carbon nanotubes (SWCNTs) in situ by modified chemical precipitation method using SDP in aqueous media at room temperature under continuous flow condition.
AB - Continuous flow spinning disc processing (SDP), which has extremely rapid mixing under plug flow conditions, effective heat and mass transfer, allowing high throughput with low wastage solvent efficiency, is effective in gaining access to superparamagnetic Fe3O4 nanoparticles at room temperature. These are formed by passing ammonia gas over a thin aqueous film of Fe2+/3+ which is introduced through a jet feed close to the centre of a rapidly rotating disc (500 to 2500 rpm), the particle size being controlled with a narrow size distribution over the range 5 nm to 10 nm, and the material having very high saturation magnetizations, in the range 68-78 emu g -1. SDP also shown to be effective for fabrication of superparamagnetic carbon nanotubes composite. Ultra fine (2-3 nm) magnetite (Fe3O4) nanoparticles were uniformly deposited on single-walled carbon nanotubes (SWCNTs) in situ by modified chemical precipitation method using SDP in aqueous media at room temperature under continuous flow condition.
KW - Carbon nanutubes
KW - Continuous flow technology
KW - Magnetic nanoparticles
KW - Spinning disc processor
KW - Superparamagnetic
UR - http://www.scopus.com/inward/record.url?scp=53349100939&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:53349100939
SN - 9781420085075
SN - 9781420085037
T3 - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
SP - 782
EP - 785
BT - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, NSTI-Nanotech, Nanotechnology 2008
T2 - 2008 NSTI Nanotechnology Conference and Trade Show, NSTI Nanotech 2008 Joint Meeting, Nanotechnology 2008
Y2 - 1 June 2008 through 5 June 2008
ER -