Ubirajara Pereira Rodrigues Filho

Universidade de São Paulo

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Co-Authors

Elias P. Ferreira-Neto

Universidade Federal de Santa Catarina

J. Schneider

Universidade de São Paulo

Sajjad Ullah

University of Peshawar

Marcos de Oliveira

Universidade de São Paulo

Kelen Menezes Flores Rossi de Aguiar

Universidade Tecnológica Federal do Paraná

Klaus Rischka

Fraunhofer Institute for Manufacturing Technology and Advanced Materials

Sidney J. L. Ribeiro

Universidade Estadual Paulista (Unesp)

Douglas Wagner Franco

Universidade de São Paulo

Adriano Lopes de Souza

Universidade Federal de São Carlos

Richard Landers

Universidade Estadual de Campinas (UNICAMP)

Cooperative Institutions

Universidade de São Paulo

165

Universidade Federal de São Carlos

110

Universidade Estadual Paulista (Unesp)

Universidade Estadual de Campinas (UNICAMP)

Instituto de Psicologia Comportamental de São Carlos

Centre National de la Recherche Scientifique

Universidade Federal de Santa Catarina

Centro Universitário de Araraquara

Hospital Universitário da Universidade de São Paulo

Hospital de Clínicas da Unicamp

Author Statistics

Papers

Citation

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ChemInform Abstract: Efficient Solvent‐Free Microwave‐Assisted Esterification of Fusel Oil Using p‐TsOH and H₃PW₁₂O₄₀ as Catalysts.

ChemInform (2001)

Eduardo R. Pérez N. C. Carnevalli Paulo Jorge Marques Cordeiro Ubirajara Pereira Rodrigues Filho Douglas Wagner Franco

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Fusel alcohol

10.1002/chin.200143068

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Citations (0)

Preparation of SiO₂—TiO₂ composite aerogels and SiO₂@TiO₂ core-shell aerogels with high thermal stability and enhanced photocatalysis

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2023)

Elias P. Ferreira-Neto Marcus A. Worsley Ubirajara Pereira Rodrigues Filho

Thermal Stability

Source

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Citations (0)

Urethanes PDMS-based: Functional hybrid coatings for metallic dental implants

Applied Surface Science (2019)

Kelen Menezes Flores Rossi de Aguiar Matheus Vieira Nascimento Juliano L. Faccioni Michael Noeske Linda Gätjen

Polydimethylsiloxane

Phosphotungstic acid

Biocompatibility

Propylene carbonate

Biofouling

Hybrid material

Surface Modification

Aminolysis

10.1016/j.apsusc.2019.04.058

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Citations (19)

Obtaining high purity silica from rice hulls

Química Nova (2010)

José da Silva Júnior Carlo Requião da Cunha Flávio Luiz Silva de Carvalho Ubirajara Pereira Rodrigues Filho Paulo Renato de Oliveira

Many routes for extracting silica from rice hulls are based on direct calcining. These methods, though, often produce silica contaminated with inorganic impurities. This work presents the study of a strategy for obtaining silica from rice hulls with a purity level adequate for applications in electronics. The technique is based on two leaching steps, using respectively aqua regia and Piranha solutions, which extract the organic matrix and inorganic impurities. The material was characterized by Fourier-transform infrared spectroscopy (FTIR), powder x-ray diffraction (XRD), x-ray fluorescence (XRF), scanning electron microscopy (SEM), particle size analysis by laser diffraction (LPSA) and thermal analysis.

Rice hulls

Powder Diffraction

10.1590/s0100-40422010000400005

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Citations (6)

Normal versus anomalous roughening in electrodeposited Prussian Blue layers

Electrochemistry Communications (2011)

Marilia F. Alamini R.C. da Silva Vinícius C. Zoldan E.A. Isoppo Ubirajara Pereira Rodrigues Filho

Prussian blue

10.1016/j.elecom.2011.09.025

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Citations (18)

Eco-friendly polydimethylsiloxane-based self-supporting film containing europium-polyoxometalate: A flexible luminescent material for white light generation

Journal of Luminescence (2018)

Mateus Batista Simões Sajjad Ullah Chanchal Hazra Michel Wong Chi Man Sidney J. L. Ribeiro

Polyoxometalate

Europium

Polydimethylsiloxane

Tungstate

Hybrid material

10.1016/j.jlumin.2018.04.041

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Citations (8)

Biomimetic urethanesil multifunctionadhesive for medical and dental implants

Resumos (2016)

Taína Zampieri Fermino Ubirajara Pereira Rodrigues Filho Klaus Rischka

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Plasmonic silver-based reversible photochromism in Ag+‒doped organomodified silicates-phosphotungstate hybrid films

Optical Materials (2019)

Júlia Cristina Noveletto Elias P. Ferreira-Neto Lidiane Patrícia Gonçalves Sajjad Ullah Dario A. Donatti

10.1016/j.optmat.2019.04.034

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Citations (2)

XPS analysis of electronic density of iron tetraazamacrocycle through Fe 2p binding energies on the 3-imidazolilpropyl-modified surface of oxidized n-Si(100)

Juliana Salvador Andresa Leonardo Marmo Moreira Janildo Lopes Magalhães Eduardo González Richard Landers

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Micro- and nanocomposites of Keggin heteropolymetalates in cellulose esters

Surface and Interface Analysis (2002)

Francílio de Carvalho Oliveira J. Schneider Abner de Siervo Richard Landers Ana Maria de Guzzi Plepis

Abstract Composites of Keggin heteropolymetalates have been prepared and characterized by SEM, XPS, 31 P‐magic angle spinning/nuclear magnetic resonance and differential scanning calorimetry. The phosphotungstic acid and phosphomolybdic acid form nanocomposites where the oxocluster structure is preserved and is highly dispersed over the material, probably inserted between the polymeric chains. Phosphovanadotungstic clusters suffer partial decomposition during composite formation, resulting in a biphasic microcomposite. The decomposition product, phosphotungstic acid presents surface segregation as shown by comparison of XPS and nuclear magnetic resonance results. Copyright © 2002 John Wiley & Sons, Ltd.

Phosphomolybdic acid

Phosphotungstic acid

Magic angle spinning

Keggin structure

10.1002/sia.1364

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Citations (11)