Size Selective Synthesis of Superparamagnetic Nanoparticles in Thin Fluids under Continuous Flow Conditions

Suk Chin, Killugudi Iyer, Colin Raston, Martin Saunders

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

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).
Original languageEnglish
Pages (from-to)922-927
JournalAdvanced Functional Materials
Volume18
Issue number6
DOIs
Publication statusPublished - 2008

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