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

Physica status solidi A

22 de novembro de 2018 LAbI UFSCar Artigo 0

The Role of Nb Addition in TiO₂ Nanoparticles: Phase Transition and Photocatalytic Properties

Abstract: 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.

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

Scientific Illustrations: Enio Longo

Physica status solidi A

215, 21, 2018

DOI: https://doi.org/10.1002/pssa.201870049

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O Laboratório Aberto de Interatividade para Disseminação do Conhecimento Científico e Tecnológico (LAbI), vinculado à Universidade Federal de São Carlos (UFSCar), é voltado à prática da divulgação científica pautada na interatividade; nas relações entre Ciência, Arte e Tecnologia.