3 years ago

The Role of Nb Addition in TiO2 Nanoparticles: Phase Transition and Photocatalytic Properties (Phys. Status Solidi A 21∕2018)

Luís F. da Silva, Waldir Avansi, Ariadne C. Catto, João E. F. S. Rodrigues, Maria I. B. Bernardi, Valmor R. Mastelaro

Abstract

Photocatalysis

This paper reports an experimental investigation on the effects of adding Nb on the thermal, structural, and photocatalytic properties of the TiO2 nanoparticles. It is demonstrated that the phase transition could be controlled by Nb addition to TiO2 lattice. Differential thermal analysis, X‐ray diffraction, and Ti K‐edge X‐ray absorption near edge structure measurements reveal that Nb addition contributed to retard the anatase‐to‐rutile phase transition, while micro‐Raman spectroscopy analysis points out that anatase and rutile phases were distributed non‐homogeneously on the samples. Photocatalysis experiments indicate that Nb addition leads to a significantly improve in the degradation of methylene blue and rhodamine B under ultraviolet irradiation being mainly influenced by order‐disorder. More details can be found in article number 1800321 by Luís F. da Silva and co‐workers.

Publisher URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/pssa.201870049

DOI: 10.1002/pssa.201870049

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