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Valmor Roberto Mastelaro
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Universidade de São Paulo (USP). Instituto de Física de São Carlos (IFSC) (Institutional affiliation for the last research proposal) Birthplace: Brazil
graduate at Bacharelaro em Física from Universidade Federal de São Carlos (1985), master's at Physic from Universidade de São Paulo (1988) and ph.d. at Doutor em Ciências from Universite de Paris XI (Paris-Sud) (1992). Has experience in Physic, focusing on Liquids and Solids Structure; crystallography, acting on the following subjects: vidros, exafs, caracterização estrutural, caracterização and ceramicas ferroeletricas. (Source: Lattes Curriculum)
Ongoing (most recent)
- CDMF - Center for the Development of Functional Materials, AP.CEPID
Abstract
Based on our previous experience, we propose a step forward in materials science research with the formation of a multidisciplinary Center for the Development of Functional Materials (CDFM). This center will be an offshoot of the Multidisciplinary Center for the Development of Ceramic Materials (MCDCM) which received FAPESP support from the first version of the CEPID program. The core f...
Completed (most recent)
- Surface structures in doped perovskite ceramics, AP.R
Abstract
The investigation of nanostructured transition-metal-perovskite materiais (TMPs) is attracting rapidly growing international attention owing to their unique dielectric properties and catalytic activity and consequent value in a variety of valuable applications including sensors, actuators, hydrogen production and environmental remediation. These materiais are of the general form AB03 wh...
- Synthesis of SrTi1-xFexO3, Zn1-xCoxO and CuAlO2 thin film oxide compostions for application as gas sensors, AP.R
Abstract
Resistive gas sensors based on metal oxides in the form of thin or thick films are the devices most used and studied for the control of toxic and flammable gases in technological processes and open environment. Although a significant amount of work is being devoted to this field of research, efforts are being made in order to find materials that exhibit best surface and bulk properties ...
- Hydrothermal synthesis of ATiO3 nanocrystalline compounds (A=Sr,Ca) doped with Fe2+, Ni2+, Mg2+, AP.R
Abstract
The process of addition of dopants has been widely used in the processing of new materials. The incorporation of atoms or ions of certain elements in a host matrix has led to obtain new materials with new properties and applications. In nanocrystalline materials, the process of doping has been considered of fundamental importance to stabilize certain crystalline phases and modify the ma...
(Only some records are available in English at this moment)
Completed (most recent)
- Synthesis and characterization of nanostructured CuAlO2 compound: A systematic study about the dependence of the sensitivity to different types of gases as a function of the Morphology, BP.PD
Abstract
This research project proposes to develop a new dimension in the relationship between the morphology and physical properties and possible applications related to the different morphologies of nanostructured CuAlO2 phase. We expect through this study clearly describe the process of formation of different morphologies of nanostructured CuAlO2 phase and thus provide the basic knowledge on ...
- Synthesis and characterization of ZnO thin and thick films : application as gas sensors, BP.DR
Abstract
The zinc oxide (ZnO)compound was the first material in the form of thin films being applied as gas sensor. Although a significant amount of work about the use of ZnO as a gas sensor has been published in recent years, the sensitivity and selectivity increasing with respect to detection of certain types of gases and their use at a temperature closer to ambient remain goals to be achieved...
- Synthesis, Characterization and Evaluation of Electrical and photocatalitic Properties of nanocrystalline SrTiO3 compound Doped with Transition Metal Ions (Fe, Ni and Mn), BP.PD
Abstract
The process of doping has been widely used for the modification of physical and chemical properties of different materials and may lead to obtain new materials having new properties and applications. In nanocrystalline materials, the doping process has been also considered essential for stabilizing certain crystalline phases. The hydrothermal synthesis method has allowed the synthesis o...
(Only some records are available in English at this moment)
FAPESP support in numbers*
*Updated September 16, 2017
| 1 / 1 | Ongoing research grants |
| 17 / 14 | Completed research grants |
| 11 / 4 | Completed scholarships in Brazil |
| 2 / 0 | Completed scholarships abroad |
| 31 / 19 | All Research Grants and Scholarships |
Most frequent collaborators in research granted by FAPESP
- Elson Longo da Silva
- Ducinei Garcia
- José Pedro Rino
- Ruth Herta Goldschmidt Aliaga Kiminami
- Yvonne Primerano Mascarenhas
- Paulo Sergio Pizani
- Thirumalairajan Subramaniam
- Ariadne Cristina Catto
- Henrique Aparecido de Jesus Loures Mourão
- Carlos Augusto Escanhoela Júnior
- Luís Fernando da Silva
- Alexandre Mesquita
Keywords used by the researcher
Scientific publications resulting from Research Grants and Scholarships under the grantee's responsibility (27)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
| Publications | 27 |
| Citations | 195 |
| Cit./Article | 7.2 |
| Data from Web of Science | |
MAIA, L. J. Q.; FICK, J.; BOUCHARD, C.; MASTELARO, V. R.; HERNANDES, A. C.; IBANEZ, A.. Elaboration and optimization of (Y,Er)Al-3(BO3)(4) glassy planar waveguides through the sol-gel process. Optical Materials, v. 32, n. 3, p. 484-490, JAN 2010. Web of Science Citations: 6.
MAIA, LAURO J. Q.; IBANEZ, ALAIN; ORTEGA, LUC; MASTELARO, VALMOR R.; HERNANDES, ANTONIO C.. Er : YAB nanoparticles and vitreous thin films by the polymeric precursor method. JOURNAL OF NANOPARTICLE RESEARCH, v. 10, n. 8, p. 1251-1262, DEC 2008. Web of Science Citations: 17.
MAIA, L. J. Q.; FERRARI, C. R.; MASTELARO, V. R.; HERNANDES, A. C.; IBANEZ, A.. Synthesis optimization, structural evolution and optical properties of Y0.9Er0.1Al3(BO3)(4) nanopowders obtained by soft chemistry methods. SOLID STATE SCIENCES, v. 10, n. 12, p. 1835-1845, DEC 2008. Web of Science Citations: 17.
MESQUITA, A.; MASTELARO, V. R.; MICHALOWICZ, A.. In situ X-ray diffraction studies of phase transition in Pb1-x La x Zr0.40Ti0.60O3 ferroelectric ceramics. PHASE TRANSITIONS, v. 83, n. 4, p. 251-262, 2010. Web of Science Citations: 10.
MESQUITA, ALEXANDRE; GODART, CLAUDE; MICHALOWICZ, ALAIN; MASTELARO, VALMOR R.. Size-induced diffuse behavior in Pb0.89La0.11Zr0.40Ti0.60O3 nanocrystalline ferroelectric ceramics. SOLID STATE SCIENCES, v. 14, n. 9, p. 1392-1397, SEP 2012. Web of Science Citations: 1.
MESQUITA, ALEXANDRE; BASSO BERNARDI, MARIA INES; GODART, CLAUDE; PIZANI, PAULO SERGIO; MICHALOWICZ, ALAIN; MASTELARO, VALMOR ROBERTO. Grain size effect on the structural and dielectric properties of Pb0.85La0.15TiO3 ferroelectric ceramic compound. CERAMICS INTERNATIONAL, v. 38, n. 7, p. 5879-5887, SEP 2012. Web of Science Citations: 5.
THIRUMALAIRAJAN, S.; GIRIJA, K.; MASTELARO, VALMOR R.; GANESH, V.; PONPANDIAN, N.. Detection of the neurotransmitter dopamine by a glassy carbon electrode modified with self-assembled perovskite LaFeO3 microspheres made up of nanospheres. RSC ADVANCES, v. 4, n. 49, p. 25957-25962, 2014. Web of Science Citations: 7. (13/19049-0)
CATTO, ARIADNE C.; DA SILVA, LUIS F.; BERNARDI, MARIA I. B.; LI, MAXIMO S.; LONGO, ELSON; LISBOA-FILHO, PAULO N.; NASCIMENTO, OTACIRO R.; MASTELARO, VALMOR R.. An investigation into the influence of zinc precursor on the microstructural, photoluminescence, and gas-sensing properties of ZnO nanoparticles. JOURNAL OF NANOPARTICLE RESEARCH, v. 16, n. 12, DEC 2014. Web of Science Citations: 1. (12/15170-6, 11/22098-7, 13/09573-3)
THIRUMALAIRAJAN, S.; MASTELARO, VALMOR R.; ESCANHOELA, JR., CARLOS A.. In-Depth Understanding of the Relation between CuAlO2 Particle Size and Morphology for Ozone Gas Sensor Detection at a Nanoscale Level. ACS APPLIED MATERIALS & INTERFACES, v. 6, n. 23, p. 21739-21749, DEC 20 2014. Web of Science Citations: 7. (13/19049-0, 10/20582-6)
THIRUMALAIRAJAN, SUBRAMANIAM; GIRIJA, KESAVAN; MASTELARO, VALMOR ROBERTO; PONPANDIAN, NAGAMONY. Photocatalytic degradation of organic dyes under visible light irradiation by floral-like LaFeO3 nanostructures comprised of nanosheet petals. NEW JOURNAL OF CHEMISTRY, v. 38, n. 11, p. 5480-5490, 2014. Web of Science Citations: 27. (13/19049-0)
THIRUMALAIRAJAN, S.; GIRIJA, K.; MASTELARO, VALMOR R.; PONPANDIAN, N.. Surface Morphology-Dependent Room-Temperature LaFeO3 Nanostructure Thin Films as Selective NO2 Gas Sensor Prepared by Radio Frequency Magnetron Sputtering. ACS APPLIED MATERIALS & INTERFACES, v. 6, n. 16, p. 13917-13927, AUG 27 2014. Web of Science Citations: 22. (13/19049-0)
DA SILVA, LUIS F.; M'PEKO, J. -C.; CATTO, ARIADNE C.; BERNARDINI, SANDRINE; MASTELARO, VALMOR R.; AGUIR, KHALIFA; RIBEIRO, CAUE; LONGO, ELSON. UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature. SENSORS AND ACTUATORS B-CHEMICAL, v. 240, p. 573-579, MAR 2017. Web of Science Citations: 4. (12/15170-6, 13/07296-2, 15/20124-1, 13/09573-3)
CATTO, ARIADNE C.; DA SILVA, LUIS F.; BERNARDI, MARIA INES B.; BERNARDINI, SANDRINE; AGUIR, KHALIFA; LONGO, ELSON; MASTELARO, VALMOR R.. Local Structure and Surface Properties of CoxZn1-xO Thin Films for Ozone Gas Sensing. ACS APPLIED MATERIALS & INTERFACES, v. 8, n. 39, p. 26066-26072, OCT 5 2016. Web of Science Citations: 0. (12/15170-6, 13/07296-2, 13/09573-3)
GIRIJA, K.; THIRUMALAIRAJAN, S.; MASTELARO, VALMOR R.; MANGALARAJ, D.. Catalyst free vapor-solid deposition of morphologically different beta-Ga2O3 nanostructure thin films for selective CO gas sensors at low temperature. ANALYTICAL METHODS, v. 8, n. 15, p. 3224-3235, 2016. Web of Science Citations: 1. (13/19049-0)
DA SILVA, LUIS F.; CATTO, ARIADNE C.; AVANSI, JR., WALDIR; CAVALCANTE, LAECIO S.; MASTELARO, VALMOR R.; ANDRES, JUAN; AGUIR, KHALIFA; LONGO, ELSON. Acetone gas sensor based on alpha-Ag2WO4 nanorods obtained via a microwave-assisted hydrothermal route. Journal of Alloys and Compounds, v. 683, p. 186-190, OCT 25 2016. Web of Science Citations: 6. (12/15170-6, 13/07296-2, 13/09573-3)
DA SILVA, LUIS F.; LOPES, OSMANDO F.; CATTO, ARIADNE C.; AVANSI, JR., WALDIR; BERNARDI, MARIA I. B.; LI, MAXIMO SIU; RIBEIRO, CAUE; LONGO, ELSON. Hierarchical growth of ZnO nanorods over SnO2 seed layer: insights into electronic properties from photocatalytic activity. RSC ADVANCES, v. 6, n. 3, p. 2112-2118, 2016. Web of Science Citations: 2. (12/15170-6, 13/13888-0, 13/07296-2, 13/09573-3)
AVANSI, W.; OLIVEIRA, C. L. P.; RIBEIRO, C.; LEITE, E. R.; MASTELARO, V. R.. Study of the morphological evolution of vanadium pentoxide nanostructures under hydrothermal conditions. CrystEngComm, v. 18, n. 39, p. 7636-7641, 2016. Web of Science Citations: 1. (13/17639-4, 13/07296-2)
MESQUITA, ALEXANDRE; MICHALOWICZ, ALAIN; MOSCOVICI, JACQUES; PIZANI, PAULO SERGIO; MASTELARO, VALMOR ROBERTO. Relationship between ferroelectric properties and local structure of Pb1-xBaxZr0.40Ti0.60O3 ceramic materials studied by X-ray absorption and Raman spectroscopies. Journal of Solid State Chemistry, v. 240, p. 16-22, AUG 2016. Web of Science Citations: 1.
MOURAO, HENRIQUE A. J. L.; LOPES, OSMANDO F.; AVANSI, JR., WALDIR; PIRES, MANOEL J. M.; SOUZA, SOLANGE; RIBEIRO, CAUE; MASTELARO, VALMOR R.. SrTi1-yFeyO3 samples obtained by hydrothermal method: The effect of the amount of Fe on structural and photocatalytic properties. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, v. 68, p. 140-146, SEP 2017. Web of Science Citations: 0. (13/17639-4, 12/11246-8, 13/13888-0)
MESQUITA, A.; MICHALOWICZ, A.; MASTELARO, V. R.. Dielectric and Structural Characterization of Pb(1-x)A(x)Zr(0.40)Ti(0.60)O(3) (A = Sr, Ca) Ferroelectric Ceramics. Science of Advanced Materials, v. 5, n. 9, p. 1264-1270, SEP 2013. Web of Science Citations: 2.
MESQUITA, A.; MICHALOWICZ, A.; PIZANI, P. S.; PROVOST, K.; MASTELARO, V. R.. Local order of Pb1-xLaxZr0.40Ti0.60O3 ferroelectric ceramic materials probed by X-ray absorption and Raman spectroscopies. Journal of Alloys and Compounds, v. 582, p. 680-687, JAN 5 2014. Web of Science Citations: 3.
THIRUMALAIRAJAN, S.; MASTELARO, VALMOR R.. A novel organic pollutants gas sensing material p-type CuAlO2 microsphere constituted of nanoparticles for environmental remediation. SENSORS AND ACTUATORS B-CHEMICAL, v. 223, p. 138-148, FEB 2016. Web of Science Citations: 2. (13/19049-0, 13/07296-2)
THIRUMALAIRAJAN, S.; GIRIJA, K.; MASTELARO, VALMOR R.; PONPANDIAN, N.. Investigation on magnetic and electric properties of morphologically different perovskite LaFeO3 nanostructures. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 26, n. 11, p. 8652-8662, NOV 2015. Web of Science Citations: 8. (13/19049-0)
CATTO, ARIADNE C.; DA SILVA, LUIS F.; RIBEIRO, CAUE; BERNARDINI, SANDRINE; AGUIR, KHALIFA; LONGO, ELSON; MASTELARO, VALMOR. R.. An easy method of preparing ozone gas sensors based on ZnO nanorods. RSC ADVANCES, v. 5, n. 25, p. 19528-19533, 2015. Web of Science Citations: 15. (12/15170-6, 13/07296-2, 13/09573-3)
DA SILVA, LUIS F.; MASTELARO, VALMOR R.; CATTO, ARIADNE C.; ESCANHOELA, JR., CARLOS A.; BERNARDINI, SANDRINE; ZILIO, SERGIO C.; LONGO, ELSON; AGUIR, KHALIFA. Ozone and nitrogen dioxide gas sensor based on a nanostructured SrTi0.85Fe0.15O3 thin film. Journal of Alloys and Compounds, v. 638, p. 374-379, JUL 25 2015. Web of Science Citations: 11. (13/12473-0, 13/09573-3, 13/07296-2, 12/15170-6)
MAIA, L. J. Q.; MASTELARO, V. R.; HERNANDES, A. C.; FICK, J.; IBANEZ, A.. Er:YAl3(BO3)(4) glassy thin films from polymeric precursor and sol-gel methods: Waveguides for integrated optics. Thin Solid Films, v. 517, n. 24, p. 6584-6587, OCT 30 2009. Web of Science Citations: 14.
MESQUITA, A.; MICHALOWICZ, A.; MASTELARO, V. R.. Influence of Ba-substitution on the structural and ferroelectric properties of Pb1-xBaxZr0.40Ti0.60O3 ceramic materials. PHASE TRANSITIONS, v. 85, n. 8, p. 659-674, 2012. Web of Science Citations: 5.