Functionalized Fe3O4 nanoparticles: influence of ligand addition sequence and pH during their continuous hydrothermal synthesis

作者: G. Thomas , F. Demoisson , O. Heintz , N. Geoffroy , L. Saviot

DOI: 10.1039/C5RA17452J

关键词:

摘要: In this study we report various new efficient ways to synthesize and modify in situ magnetite (Fe3O4) iron oxide nanoparticles (NPs). Thanks an apparatus especially developed for method of grafting, the NPs have been synthesized functionalized by 3,4-dihydroxyhydrocinnamic acid (DHCA) or 3,4-dihydroxy-L-phenylalanine (LDOPA) one step under hydrothermal conditions using varying concentration ratios ([organic molecules]/[ferrous ferric ions]). The organic molecules were added before after NP synthesis. addition these modifies structure, morphology, oxidation degree growth crystallites. Adding synthesis acidic increases average crystallite size prevents further whereas basic is stopped but a partial maghemite observed. DHCA LDOPA results modification lattice structure does not change size. This underlines importance sequence on NPs.

参考文章(53)
T. Belin, N. Millot, N. Bovet, M. Gailhanou, In situ and time resolved study of the γ/α-Fe2O3 transition in nanometric particles Journal of Solid State Chemistry. ,vol. 180, pp. 2377- 2385 ,(2007) , 10.1016/J.JSSC.2007.06.013
Michael L. McGlashen, Kevin L. Davis, Michael D. Morris, Surface enhanced Raman spectroscopy of neurotransmitters American Institute of Physics Conference Series. ,vol. 191, pp. 707- 712 ,(1989) , 10.1063/1.38609
J. Lahaye, G. Nansé, A. Bagreev, V. Strelko, Porous structure and surface chemistry of nitrogen containing carbons from polymers Carbon. ,vol. 37, pp. 585- 590 ,(1999) , 10.1016/S0008-6223(98)00225-5
Eric D. Smolensky, Hee-Yun E. Park, Thelma S. Berquó, Valérie C. Pierre, Surface functionalization of magnetic iron oxide nanoparticles for MRI applications – effect of anchoring group and ligand exchange protocol Contrast Media & Molecular Imaging. ,vol. 6, pp. 189- 199 ,(2010) , 10.1002/CMMI.417
Yannick Cudennec, André Lecerf, The transformation of ferrihydrite into goethite or hematite, revisited Journal of Solid State Chemistry. ,vol. 179, pp. 716- 722 ,(2006) , 10.1016/J.JSSC.2005.11.030
T. Belin, N. Millot, F. Villiéras, O. Bertrand, J. P. Bellat, Structural variations as a function of surface adsorption in nanostructured particles Journal of Physical Chemistry B. ,vol. 108, pp. 5333- 5340 ,(2004) , 10.1021/JP0310899
T Belin, N Guigue-Millot, T Caillot, D Aymes, J.C Niepce, Influence of grain size, oxygen stoichiometry, and synthesis conditions on the γ-Fe2O3 vacancies ordering and lattice parameters Journal of Solid State Chemistry. ,vol. 163, pp. 459- 465 ,(2002) , 10.1006/JSSC.2001.9426
L. Maurizi, F. Bouyer, M. Ariane, R. Chassagnon, N. Millot, Fast and continuous synthesis of nanostructured iron spinel in supercritical water: influence of cations and citrates RSC Advances. ,vol. 4, pp. 45673- 45678 ,(2014) , 10.1039/C4RA08562K
Esther Amstad, Andreas U. Gehring, Håkon Fischer, Venkatamaran V. Nagaiyanallur, Georg Hähner, Marcus Textor, Erik Reimhult, Influence of Electronegative Substituents on the Binding Affinity of Catechol-Derived Anchors to Fe3O4 Nanoparticles Journal of Physical Chemistry C. ,vol. 115, pp. 683- 691 ,(2011) , 10.1021/JP1109306
Amyn S. Teja, Pei-Yoong Koh, Synthesis, properties, and applications of magnetic iron oxide nanoparticles Progress in Crystal Growth and Characterization of Materials. ,vol. 55, pp. 22- 45 ,(2009) , 10.1016/J.PCRYSGROW.2008.08.003