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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.)

Improving the ozone gas-sensing properties of CuWO4 nanoparticles

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Author(s):
Catto, Ariadne C. [1] ; Fiorido, Tomas [2] ; Souza, Erica L. S. [3] ; Avansi, Jr., Waldir [4] ; Andres, Juan [5] ; Aguir, Khalifa [2] ; Longo, Elson [1] ; Cavalcante, Laecio S. [3] ; da Silva, Luis F. [4]
Total Authors: 9
Affiliation:
[1] Sao Paulo State Univ, Inst Chem, POB 355, BR-14801907 Araraquara, SP - Brazil
[2] Aix Marseille Univ, CNRS UMR 7334 IM2NP, FS St Jerome S152, F-13397 Marseille - France
[3] Univ Estadual Piaui, PPGQ CCN, POB 381, BR-64002150 Teresina, PI - Brazil
[4] Univ Fed Sao Carlos, Dept Phys, Lab Nanostruct Multifunct Mat, BR-13565905 Sao Carlos, SP - Brazil
[5] Jaume I Univ, Dept Chem & Phys, Castellon De La Plana - Spain
Total Affiliations: 5
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 748, p. 411-417, JUN 5 2018.
Web of Science Citations: 8
Abstract

This paper consists of an experimental investigation on the effects of annealing temperature on the structural, surface and ozone gas-sensing properties of CuWO4 nanoparticles prepared via a sono-chemical route. X-ray diffraction patterns and X-ray absorption near-edge structure spectroscopy revealed that both long-and short-order structures increase with the annealing temperature. Electrical resistance measurements indicated that CuWO4 samples were sensitive in the range of 15-1400 ppb, exhibiting a good reversibility and repeatability. The enhancement of the ozone gas-sensing properties was attributed to the reduction of hydroxyl species and the improvement of the crystallization degree. This study provides a versatile strategy for obtaining CuWO4 nanoparticles for practical applications as an ozone gas sensor. (C) 2018 Elsevier B.V. All rights reserved. (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: 17/12437-5 - Preparation and characterization of semiconductor nanoheterojunctions applied in photoactived gas sensors
Grantee:Luís Fernando da Silva
Support Opportunities: Regular Research Grants