Abstract
We have demonstrated a solution synthesis of crystalline FeO nanoparticles (NPs) with single nanosizes of 3–8 nm by refluxing FeCl3 in N,N-dimethylformamide (DMF) with oleic acid, followed by hydrothermal treatment. FeO is usually formed at high temperature and/or high pressure and is stable only above 560 °C. By employment of this DMF reduction method, we developed the synthesis of FeO NPs to the simplicity, lower temperature, and lower pressure of this method. We first found that the FeO NPs exhibit light blue photoluminescence. The photoluminescence properties of the FeO NPs are discussed in terms of their crystalline nature and surface characteristics.
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Aldon L, Jumas JC (2012) Lithium-induced conversion reaction in wüstite Fe1−xO studied by 57Fe Mössbauer spectroscopy. Solid State Sci 14:354–361
Amstad E, Textor M, Reimhult E (2011) Stabilization and functionalization of iron oxide nanoparticles for biomedical applications. Nanoscale 3:2819–2843
Darken LS, Gurry RW (1946) The system iron-oxygen. II. Equilibrium and thermodynamics of liquid oxide and other phases. J Am Chem Soc 68:798–816
Fei H, Ai X, Gao M, Yang Y, Zhang T, Shen J (1995) Luminescence of coated α-Fe2O3 nanoparticles. J Lumin 66–67:345–348
Gokon N, Oku Y, Kaneko H, Tamaura Y, Energy Solar (2002) Methane reforming with CO2 in molten salt using FeO. Catalyst 72:243–250
Goldys EM, Sobhan MA (2012) Fluorescence of colloidal gold nanoparticles is controlled by the surface adsorbate. Adv Funct Mater 22:1906–1913
Guo MY, Ng AMC, Liu F, Djurišić AB, Chan WK, Su H, Wong KS (2011) Effect of native defects on photocatalytic properties of ZnO. J Phys Chem C 115:11095–11101
Hou Y, Xu Z, Sun S (2007) Controlled synthesis and chemical conversions of FeO nanoparticles. Angew Chem Int Ed 46:6329–6332
Huber DL (2005) Synthesis, properties, and applications of iron nanoparticles. Small 1:482–501
Hyotanishi M, Isomura Y, Yamamoto H, Kawasaki H, Obora Y (2011) Surfactant–free synthesis of palladium nanoclusters for their use in catalytic cross-coupling reactions. Chem Commun 47:5750–5752
Iwasaki Y, Shibata Y, Watanabe A, Inada M, Kawasaki H, Uchino T (2010) One-pot preparation of water-soluble blue luminescent silica flakes via microwave heating. Chem Lett 39:370–371
Kawasaki H, Yamamoto H, Fujimori H, Arakawa R, Iwasaki Y, Inada M (2010) Stability of the DMF-protected Au nanoclusters: photochemical, dispersion, and thermal properties. Langmuir 26:5926–5933
Laurent S, Forge D, Port M, Roch A, Robic C, Vander Elst L, Muller RN (2008) Magnetic iron oxide nanoparticles: synthesis, stabilization, vectorization, physicochemical characterizations, and biological applications. Chem Rev 108:2064–2110
Liu P, Cai W, Zeng H (2008) Fabrication and size-dependent optical properties of FeO nanoparticles induced by laser ablation in a liquid medium. J Phys Chem C 112:3261–3266
Machala L, Zboril R, Gedanken A (2007) Amorphous iron(III) oxides. J Phys Chem B 111:4003–4018
Machala L, Tuček J, Zbořil R (2011) Polymorphous transformations of nanometric iron(iii) oxide––a review. Chem Mater 23:3255–3272
Mahmoudi M, Hosseinkhani H, Hosseinkhani M, Boutry S, Simchi A, Journeay WS, Subramani S, Laurent S (2011) Magnetic resonance imaging tracking of stem cells in vivo using iron oxide nanoparticles as a tool for the advancement of clinical regenerative medicine. Chem Rev 111:253–280
McCammon CA, Liu LG (1984) The effects of pressure and temperature on nonstoichiometric wüstite, FexO: the iron-rich phase boundary. Phys Chem Miner 10:106–113
Singh PR, Samant SD, Singh DU (2006) Conjugate addition of indoles with electron-deficient olefins catalyzed by Fe-exchanged montmorillonite K10. Synth Commun 36:1265–1271
Wong ST, Lee JF, Cheng S, Mou CY (2000) In-situ study of MCM-41-supported iron oxide catalysts by XANES and EXAFS. Appl Catal A 198:115–126
Yin M, O’Brien S (2003) Synthesis of monodisperse nanocrystals of manganese oxides. J Am Chem Soc 125:10180–10181
Zhang L, Yin L, Wang C, Iun N, Qi X, Xiang D (2010) Origin of visible photoluminescence of ZnO quantum dots: defect-dependent and size-dependent. J Phys Chem C 114:9651–9568
Zhou L, Yuan J, Wei Y (2011) Core-shell structural iron oxide hybrid nanoparticles: from controlled synthesis to biomedical applications. J Mater Chem 21:2823–2840
Acknowledgments
We thank Dr. R. Umeda and Prof. Y. Nishiyama at Kansai University for the measurements of the quantum yields of the iron oxide NPs. We also thank Dr. Yamazaki at Kobelco Research Institute, Inc. for TEM measurements. This study was supported in part by the “Strategic Project to Support the Formation of Research Bases at Private Universities” with matching Fund Subsidy from Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. This study was also partially supported by Grants-in-Aid for Scientific Research (Nos. 23360361, 23655074, and 22350040) from the Japan Society for the Promotion of Science (JSPS) and MEXT.
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Sugii, Y., Inada, M., Yano, H. et al. Single nanosized FeO nanocrystals with photoluminescence properties. J Nanopart Res 15, 1379 (2013). https://doi.org/10.1007/s11051-012-1379-2
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DOI: https://doi.org/10.1007/s11051-012-1379-2