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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
da Silva, Luis F. [1] ; Avansi, Jr., Waldir [1] ; Catto, Ariadne C. [2] ; Rodrigues, Joao E. F. S. [1] ; Bernardi, Maria I. B. [3] ; Mastelaro, Valmor R. [3]
Total Authors: 6
Affiliation:
[1] Univ Fed Sao Carlos, Lab Nanostruct Multifunct Mat, Dept Phys, Washington Luiz Rd Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, LIEC, Washington Luiz Rd Km 235, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Inst Phys Sao Carlos, 400 Trabalhador Sao Carlense Ave, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE; v. 215, n. 21 NOV 7 2018.
Web of Science Citations: 4
Abstract

This paper reports an experimental investigation on the effects of Nb addition on the phase transformation and photocatalytic properties of TiO2 nanoparticles. Differential thermal analysis, Raman spectroscopy, X-ray diffraction measurements reveal that Nb addition retarded the anatase-to-rutile phase transition. Photocatalysis experiments indicate an enhancement of the degradation of methylene blue and rhodamine B dyes with the addition of Nb to TiO2 lattice. This behavior was attributed to the presence of Nb ions acting as active sites formers as well as the removal of organic species, since the presence of hydroxyls groups remained unchanged, as revealed by X-ray photoelectron spectroscopy. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 13/17639-4 - Obtainment of nanostructured semiconductors: correlation of the photocatalytic properties to their structural characteristic
Grantee:Waldir Avansi Junior
Support Opportunities: Regular Research Grants
FAPESP's process: 17/12437-5 - Preparation and characterization of semiconductor nanoheterojunctions applied in photoactived gas sensors
Grantee:Luís Fernando da Silva
Support Opportunities: Regular Research Grants