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Seeded Growth of Asymmetric Binary Nanocrystals Made of a Semiconductor TiO2 Rodlike Section and a Magnetic γ-Fe2O3 Spherical Domain
Open accessAbstract
Asymmetric binary nanocrystals (BNCs), comprising one c-axis elongated anatase TiO2 section and one gamma-Fe2O3 spherical domain attached together, are synthesized by heterogeneous nucleation of iron oxide onto the longitudinal facets of TiO2 nanorods in a ternary surfactant mixture. The topologically controlled composition of the BNCs is ascertained by a combination of powder X-ray diffraction, Raman and Mössbauer spectroscopy, high-angle annular dark-field imaging, and high-resolution transmission electron microscopy lattice fringe mapping, while their size-dependent magnetic behavior is demonstrated by ac susceptibility measurements. The heteroepitaxial growth proceeds through a mechanism never observed before for colloidal nanoheterostructures: the two domains share a restricted and locally curved junction region, which accommodates efficiently the interfacial strain and retards the formation of misfit dislocations. It is believed that these BNCs, which combine the properties of two technologically relevant oxide materials, can pave the way to reinforced applications in several fields of nanoscience, such as in photocatalysis, in malignant cell treatments, and in nanocrystal assembly.
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Cites
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Nanostructures in Biodiagnostics
Rosi, N. L., & Mirkin, C. A. (2005) · Chemical Reviews · doi:10.1021/cr030067f · Cited by 4,603
Ultra-large-scale syntheses of monodisperse nanocrystals
Park, J., An, K., Hwang, Y., Park, J.-G., Noh, H.-J., Kim, J.-Y., Park, J.-H., Hwang, N.-M., & Hyeon, T. (2004) · Nature Materials · doi:10.1038/nmat1251 · Cited by 4,076
Narayanan, R., & El-Sayed, M. A. (2005) · The Journal of Physical Chemistry B · doi:10.1021/jp051066p · Cited by 1,298
Cited by
Shaping binary metal nanocrystals through epitaxial seeded growth
Habas, S. E., Lee, H., Radmilovic, V., Somorjai, G. A., & Yang, P. (2007) · Nature Materials · doi:10.1038/nmat1957 · Cited by 1,205
Titanium Dioxide Crystals with Tailored Facets
Liu, G., Yang, H. G., Pan, J., Yang, Y. Q., Lu, G. Q. (., & Cheng, H.-M. (2014) · Chemical Reviews · doi:10.1021/cr400621z · Cited by 1,084
Colloidal heterostructured nanocrystals: Synthesis and growth mechanisms
Carbone, L., & Cozzoli, P. D. (2010) · Nano Today · doi:10.1016/j.nantod.2010.08.006 · Cited by 691
Self-citationSolution-Phase Synthesis of Titanium Dioxide Nanoparticles and Nanocrystals
Cargnello, M., Gordon, T. R., & Murray, C. B. (2014) · Chemical Reviews · doi:10.1021/cr500170p · Cited by 406
New forms of superparamagnetic nanoparticles for biomedical applications
Xu, C., & Sun, S. (2013) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2012.10.008 · Cited by 349
Metadata
- Authors
- Buonsanti, R., Grillo, V., Carlino, E., Giannini, C., Curri, M. L., Innocenti, C., Sangregorio, C., Achterhold, K., Parak, F. G., Agostiano, A., & Cozzoli, P. D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-12-01
- Volume
- 128
- Issue
- 51
- Pages
- 16953-16970
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2084398069
- Cited by
- 161
- References
- 4
- FWCI
- 10.74
- Type
- journal article
- Language
- en
- Open access
- green
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- Buonsanti, R., Grillo, V., Carlino, E., Giannini, C., Curri, M. L., Innocenti, C., Sangregorio, C., Achterhold, K., Parak, F. G., Agostiano, A., & Cozzoli, P. D. (2006). Seeded Growth of Asymmetric Binary Nanocrystals Made of a Semiconductor TiO2 Rodlike Section and a Magnetic γ-Fe2O3 Spherical Domain. Journal of the American Chemical Society. https://doi.org/10.1021/ja066557h
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
