@article {BarbaraFedericaScremin2014,
	title = {Comparative Raman Study of Organic-Free and Surfactant-Capped Rod-Shaped Anatase TiO2 Nanocrystals},
	journal = {Science of advanced materials (Online)},
	volume = {6},
	year = {2014},
	pages = {923–932},
	publisher = {American Scientific Publishers},
	address = {Los Angeles},
	abstract = {Excitation of lattice vibrations in nanostructured anatase TiO2 frequently occurs at energy values differing from that found for the corresponding bulk phase. Particularly, investigations have long aimed at establishing a correlation between the low-frequency Eg(1) mode and the mean crystallite size on the basis of phononconfinement models. Here, we report a detailed Raman study, supported by X-ray diffraction analyses, on anatase TiO2 nanocrystals with rod-shaped morphology and variable geometric parameters, prepared by colloidal wet-chemical routes. By examining the anomalous shifts of the Eg(1) mode in the spectra of surfactantcapped nanorods and in those of corresponding organic-free derivatives (obtained by a suitable thermal oxidative treatment), an insight into the impact of exposed facets and of the coherent crystalline domain size on Raman-active lattice vibrational modes has been gained. Our investigation offers a ground for clarifying the current lack of consensus as to the applicability of phonon-confinement models for drawing information on the size of surface-functionalized TiO2 nanocrystals upon analysis of their Raman features.},
	keywords = {Colloidal Nanocrystals, Raman Spectroscopy, TiO2, X-Ray Diffraction},
	issn = {1947-2943},
	doi = {10.1166/sam.2014.1856},
	url = {http://www.aspbs.com/},
	author = {Barbara Federica Scremin and Maria R. Belviso and Davide Altamura and Cinzia Giannini and P. Davide Cozzoli}
}
