|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||K-48: Nd3+ Doping Effect on the Structure, Microstructure, Lattice Distortion and Electronic Properties of TiO2 Nanoparticles
||Balter Trujillo-Navarrete, Edgar Alonso Reynoso-Soto, María del Pilar Haro-Vázquez, Henry Alvarez-Huerta, Rosa María Félix-Navarro, Sergio Pérez-Sicairos
|On-Site Speaker (Planned)
Doped and undoped TiO2 nanoparticles were prepared by sol–gel method and thermally treated at 600 ºC. The Nd3+ ion eﬀect was studied on the structure and microstructure of anatase TiO2 by the Rietveld reﬁnement using X-ray powder diﬀraction data. Bond lengths, intra-polyhedral and nearest-neighbor bond angles, and edges distances were analyzed. The phase formation was conﬁrmed by high-resolution transmission electron microscopy. The results showed that the trivalent cation of rare earth altered the microstructure and the octahedral array. The adjustment of Ti–O bond length induced by the dopant addition, reduced the octahedral distortion of the samples with a decrease in the quadratic elongation and angle variance. The structural changes were mainly observed for 0.1 at. % Nd-doped TiO2 nanoparticles attributed to the substitutional Nd3+ ions. The dopant insertion resulted in a better structural stability of the nanocrystals that enhanced their charge transference and photocatalytic efﬁciency.
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