Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses

Wolff A, Hetaba W, Wißbrock M, Loeffler S, Mill N, Eckstädt K, Dreyer A, Ennen I, Sewald N, Schattschneider P, Hütten A (2014)
Beilstein Journal of Nanotechnology 5: 210-218.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Oriented attachment has created a great debate about the description of crystal growth throughout the last decade. This aggregation-based model has successfully described biomineralization processes as well as forms of inorganic crystal growth, which could not be explained by classical crystal growth theory. Understanding the nanoparticle growth is essential since physical properties, such as the magnetic behavior, are highly dependent on the microstructure, morphology and composition of the inorganic crystals. In this work, the underlying nanoparticle growth of cobalt ferrite nanoparticles in a bioinspired synthesis was studied. Bioinspired syntheses have sparked great interest in recent years due to their ability to influence and alter inorganic crystal growth and therefore tailor properties of nanoparticles. In this synthesis, a short synthetic version of the protein MMS6, involved in nanoparticle formation within magnetotactic bacteria, was used to alter the growth of cobalt ferrite. We demonstrate that the bioinspired nanoparticle growth can be described by the oriented attachment model. The intermediate stages proposed in the theoretical model, including primary-building-block-like substructures as well as mesocrystal-like structures, were observed in HRTEM measurements. These structures display regions of substantial orientation and possess the same shape and size as the resulting discs. An increase in orientation with time was observed in electron diffraction measurements. The change of particle diameter with time agrees with the recently proposed kinetic model for oriented attachment.
Stichworte
growth; oriented attachment; polypeptide; nanoparticle; cobalt ferrite nanoparticles; bioinspired synthesis
Erscheinungsjahr
2014
Zeitschriftentitel
Beilstein Journal of Nanotechnology
Band
5
Seite(n)
210-218
ISSN
2190-4286
eISSN
2190-4286
Page URI
https://pub.uni-bielefeld.de/record/2673731

Zitieren

Wolff A, Hetaba W, Wißbrock M, et al. Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses. Beilstein Journal of Nanotechnology. 2014;5:210-218.
Wolff, A., Hetaba, W., Wißbrock, M., Loeffler, S., Mill, N., Eckstädt, K., Dreyer, A., et al. (2014). Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses. Beilstein Journal of Nanotechnology, 5, 210-218. doi:10.3762/bjnano.5.23
Wolff, Annalena, Hetaba, Walid, Wißbrock, Marco, Loeffler, Stefan, Mill, Nadine, Eckstädt, Katrin, Dreyer, Axel, et al. 2014. “Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses”. Beilstein Journal of Nanotechnology 5: 210-218.
Wolff, A., Hetaba, W., Wißbrock, M., Loeffler, S., Mill, N., Eckstädt, K., Dreyer, A., Ennen, I., Sewald, N., Schattschneider, P., et al. (2014). Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses. Beilstein Journal of Nanotechnology 5, 210-218.
Wolff, A., et al., 2014. Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses. Beilstein Journal of Nanotechnology, 5, p 210-218.
A. Wolff, et al., “Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses”, Beilstein Journal of Nanotechnology, vol. 5, 2014, pp. 210-218.
Wolff, A., Hetaba, W., Wißbrock, M., Loeffler, S., Mill, N., Eckstädt, K., Dreyer, A., Ennen, I., Sewald, N., Schattschneider, P., Hütten, A.: Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses. Beilstein Journal of Nanotechnology. 5, 210-218 (2014).
Wolff, Annalena, Hetaba, Walid, Wißbrock, Marco, Loeffler, Stefan, Mill, Nadine, Eckstädt, Katrin, Dreyer, Axel, Ennen, Inga, Sewald, Norbert, Schattschneider, Peter, and Hütten, Andreas. “Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses”. Beilstein Journal of Nanotechnology 5 (2014): 210-218.
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