Efficient functionalization of magnetite nanoparticles with phosphonate using a one-step continuous hydrothermal process

作者: Guillaume Thomas , Frédéric Demoisson , Julien Boudon , Nadine Millot

DOI: 10.1039/C6DT01050D

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摘要: For the first time, phosphonate-functionalized magnetite nanoparticles (Fe3O4 NPs) were synthesized using a one-step continuous hydrothermal process. The NP surface was modified hydrophilic organic molecule, namely 6-phosphonohexanoic acid (PHA). NPs fully characterized (TEM, XRD, DLS, ζ-potential, TGA, FTIR, XPS and specific area measurements) in order to investigate PHA effect on size, oxidation state, anchoring colloidal stability. reduced crystallite size distribution improved greatly stability when compared with bare Fe3O4 NPs. Moreover, grafted according three different conformations: as mononuclear monodendates, binuclear bidentates or lying-down complexes. This report is very promising regarding stabilization functionalization of by phosphonate molecules under conditions. post-grafting polymers such polyethylene glycol can be considered owing presence free carboxyl groups (-COOH)

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