Surface and colloid chemical studies of gamma iron oxides for magnetic memory media

Preparation of iron oxide nanocrystals by surfactant-free or oleic acid-assisted thermal decomposition of a Fe(III) alkoxide

“…Superparamagnetic iron oxide nanocrystals have attracted much interest because of the combination of tunable magnetic properties and controllable surface properties. Important applications range from magnetic recording media [4] and environmental remediation [5] to biomedical applications [6][7][8][9][10][11], including, e.g. enhanced magnetic resonance imaging (MRI), drug delivery, bio-separation, and cancer treatment by hyperthermia.…”

Polydispersity and Functional Group Distribution of Dispersant Polymer: Adsorption Properties and Magnetic Paint Dispersion

“…One of the solutions to satisfying these requirements is to introduce a small amount of a functional group such as a sulfuric salt onto the binder polymer chains (12). Some kinds of functional groups show a strong affinity against hydrophilic magnetic powder surfaces (13,14). Through the strong interaction between the functional group and the surface, the adsorption amount of the binder polymer and the dispersion quality of the paint are dramatically enhanced (15,16).…”

Characterization of the acid-base nature of metal oxides by adsorption of TCNQ

“…Fowkes et al. [3][4][5], in particular, have studied the adsorption of acidic and basic molecules from neutral solvents on inorganic powders such as iron oxides, silica, and titania. They found that the calorimetric heats of adsorption are actually the heats of acid-base interactions, governed by the Drago equation [6], and that the Drago equation constants can be accurately determined for the surface sites of these inorganic solids.…”