JBCS

9:39, Tue May 23

Open Access/APCs

vol. 25, No. 3, 2014, p. 389-609

 

XIX Brazilian Symposium on Electrochemistry and Electroanalytical Chemistry (XIX-SIBEE)

The mission of the event is to promote the integration of different areas of knowledge in electrochemistry and electroanalytical chemistry. Also, to induce the association of researchers enabling the development of multi and interdisciplinary work, leading to a substantial contribution to the progress of science

XIX Brazilian Symposium on Electrochemistry and Electroanalytical Chemistry (XIX-SIBEE)



Cover Article
J. Braz. Chem. Soc. 2014, 25(3), 389-392

XIX Brazilian Symposium on Electrochemistry and Electroanalytical Chemistry (XIX-SIBEE)

Roberto M. Torresi; Mauro Coelho dos Santos

How to cite this article

The mission of the event is to promote the integration of different areas of knowledge in electrochemistry and electroanalytical chemistry. Also, to induce the association of researchers enabling the development of multi and interdisciplinary work, leading to a substantial contribution to the progress of science

http://dx.doi.org/10.5935/0103-5053.20140049


Editorial J. Braz. Chem. Soc. 2014, 25(3), 389-392

XIX Brazilian Symposium on Electrochemistry and Electroanalytical Chemistry (XIX-SIBEE)

Roberto M. Torresi; Mauro Coelho dos Santos

How to cite this article

 

http://dx.doi.org/10.5935/0103-5053.20140049


Review J. Braz. Chem. Soc. 2014, 25(3), 393-417

A Review on the Degradation of Organic Pollutants in Waters by UV Photoelectro‑Fenton and Solar Photoelectro-Fenton

Enric Brillas

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This paper presents a review on the UV photoelectro-Fenton and solar photoelectro-Fenton methods in which organic pollutants are mineralized under the synergistic action of OH formed at the anode from water oxidation and in the bulk from Fenton's reaction between added Fe2+ and cathodically generated H2O2, as well as UV radiation provided by an artificial lamp and sunlight, respectively.

http://dx.doi.org/10.5935/0103-5053.20130257

Published online: October 23, 2013

J. Braz. Chem. Soc. 2014, 25(3), 418-426

Nanoparticle Mediated Electron Transfer Across Organic Layers: From Current Understanding to Applications

J. Justin Gooding; Muhammad Tanzirul Alam; Abbas Barfidokht; Lachlan Carter

How to cite this article

 

Nanoparticles mediated electron transfer through an otherwise insulating surface.

http://dx.doi.org/10.5935/0103-5053.20130306

Published online: December 19, 2013

J. Braz. Chem. Soc. 2014, 25(3), 427-441

Electrocatalysis by Hydrogenases: Lessons for Building Bio‑Inspired Devices

Ian J. McPherson; Kylie A. Vincent

How to cite this article

 

'Plugging in' redox enzymes to electrically conductive surfaces allows the assembly of devices ranging from fuel cells to photochemical systems for fuel production.

http://dx.doi.org/10.5935/0103-5053.20140042

Published online: February 18, 2014

Articles J. Braz. Chem. Soc. 2014, 25(3), 442-447

Oscillatory Instabilities in the Electrooxidation of Borohydride on Platinum

Eduardo G. Machado; Hamilton Varela

How to cite this article

 

This figure displays the main findings of the work, showing in a pictorial way that the electrooxidation of borohydride, under the appropriate conditions, can present complex behavior.

http://dx.doi.org/10.5935/0103-5053.20130243

Published online: October 2, 2013

J. Braz. Chem. Soc. 2014, 25(3), 448-452

Electrochemical Oxidation of Chlorhexidine and its Amperometric Determination by Flow-Injection Analysis

Ana Paula de Lima; Jessica S. Stefano; Rodrigo H. O. Montes; Rafael R. Cunha; Luiz A. J. Silva; Eduardo M. Richter; Rodrigo A. A. Muñoz

How to cite this article

 

The electrochemical oxidation of chlorhexidine is studied for the first time and its amperometric determination using a flow-injection analysis system is demonstrated. The method was applied for the analysis mouth rinses and skin disinfectants and compared with HPLC.

http://dx.doi.org/10.5935/0103-5053.20130267

Published online: November 8, 2013

J. Braz. Chem. Soc. 2014, 25(3), 453-459

Polymer Brush Modified Electrode with Switchable Selectivity Triggered by pH Changes Enhanced by Gold Nanoparticles

Juliane R. Sempionatto; Lucas C. Recco; Valber A. Pedrosa

How to cite this article

 

A switchable sensor was built up with smart material based on polymer brush and gold nanoparticles. The modified electrode functionalized with polyacrylic acid (PAA) tethered to indium tin oxide (ITO) and covered with gold nanoparticle (ITO/PAA/Au) demonstrated switchable interfacial properties discriminating different pH measurements by different techniques.

http://dx.doi.org/10.5935/0103-5053.20130298

Published online: December 13, 2013

J. Braz. Chem. Soc. 2014, 25(3), 460-468

Electrochemical Behavior of Iron and Magnesium in Ionic Liquids

Lucas Lodovico; Vitor L. Martins; Tânia M. Benedetti; Roberto M. Torresi

How to cite this article

 

In this study, some issues concerning the electrodeposition of Mg2+ and Fe2+ in ionic liquids (ILs) are discussed, like: passivation of the electrode caused by the participation of the ILs ions in the process and the effect of the presence of small amounts of water in the systems.

http://dx.doi.org/10.5935/0103-5053.20130305

Published online: December 19, 2013


J. Braz. Chem. Soc. 2014, 25(3), 469-477

Electrochemical Oxidation, Adsorption and Quantification of 1,2-Benzopyrone Employing a Glassy Carbon Electrode

Luiz Fernando M. de Azevedo; Marcello G. Trevisan; Jerusa S. Garcia; Alzira M. S. Lucho

How to cite this article

 

The electrooxidation and quantification of 1,2-benzopyrone in guaco samples was studied. An optimization chemometric and electrochemical impedance methodology was used to evaluate the adsorption process on an electrode surface.

http://dx.doi.org/10.5935/0103-5053.20140004

Published online: January 10, 2014

J. Braz. Chem. Soc. 2014, 25(3), 478-483

Simultaneous Determination of Paracetamol and Ibuprofen in Pharmaceutical Samples by Differential Pulse Voltammetry Using a Boron-Doped Diamond Electrode

Amanda B. Lima; Lívia M. F. C. Torres; Carlos F. R. C. Guimarães; Rodrigo M. Verly; Leonardo M. da Silva; Álvaro D. Carvalho Júnior; Wallans T. P. dos Santos

How to cite this article

 

We present in this work a simple, fast and low-cost methodology for simultaneous determination of paracetamol and ibuprofen in pharmaceutical samples using a high stable electrode (boron-doped diamond) by differential pulse voltammetry (DPV).

http://dx.doi.org/10.5935/0103-5053.20140005

Published online: January 10, 2014

J. Braz. Chem. Soc. 2014, 25(3), 484-491

Flow-Injection Analysis with Multiple-Pulse Amperometry for Simultaneous Determination of Paracetamol and Naproxen Using a Homemade Flow Cell for Screen-Printed Electrodes

Jessica S. Stefano; Rodrigo H. O. Montes; Eduardo M. Richter; Rodrigo A. A. Muñoz

How to cite this article

 

The simultaneous determination of paracetamol and naproxen using multiple-pulse amperometric detection on a screen-printed electrode adapted in a homemade flow-injection analysis cell is described.

http://dx.doi.org/10.5935/0103-5053.20140006

Published online: January 14, 2014

J. Braz. Chem. Soc. 2014, 25(3), 492-501

Electrochemical Degradation of Dimethyl Phthalate Ester on a DSA® Electrode

Fernanda L. Souza; José M. Aquino; Douglas W. Miwa; Manuel A. Rodrigo; Artur J. Motheo

How to cite this article

 

Electric energy consumption for electrolysis required to attain 40% of DMP concentration and TOC removals is ca. 23 kW h m-3.

http://dx.doi.org/10.5935/0103-5053.20140007

Published online: January 14, 2014

J. Braz. Chem. Soc. 2014, 25(3), 502-508

Carbon Nanotubes Modified with SnO2 Rods for Levofloxacin Detection

Vivian Cesarino; Ivana Cesarino; Fernando C. Moraes; Sergio A. S. Machado; Lucia H. Mascaro

How to cite this article

 

A new sensor based on multi-walled carbon nanotubes modified with SnO2 rods was evaluated for the electrochemical determination of levofloxacin. The proposed material was shown to be a promising alternative for electrochemical sensing.

http://dx.doi.org/10.5935/0103-5053.20140017

Published online: January 24, 2014

J. Braz. Chem. Soc. 2014, 25(3), 509-516

Performance of a Direct Glycerol Fuel Cell using KOH Doped Polybenzimidazole as Electrolyte

Ana P. Nascimento; José J. Linares

How to cite this article

 

Alkaline-based direct glycerol fuel cells act oxidizing glycerol and producing electricity at the same time. In the anode, the glycerol oxidation products are produced along with water. In the cathode, oxygen is reduced, generating OH- ions that travels across the KOH-impregnated polybenzimidazole membrane. The electrons flow through the external circuit supplying electricity to the external elements.

http://dx.doi.org/10.5935/0103-5053.20140018

Published online: January 24, 2014

J. Braz. Chem. Soc. 2014, 25(3), 517-525

Determination of Quercetin in a Pharmaceutical Sample by Square-Wave Voltammetry Using a Poly(vinylpyrrolidone)-Modified Carbon-Paste Electrode

Jamille V. Piovesan; Almir Spinelli

How to cite this article

 

A poly(vinylpyrrolidone)-modified carbon-paste electrode was evaluated for determination of quercetin. The sensor showed excellent performance in the analysis of a pharmaceutical sample. The sensor also worked for other flavonoids.

http://dx.doi.org/10.5935/0103-5053.20140019

Published online: January 24, 2014

J. Braz. Chem. Soc. 2014, 25(3), 526-531

Optical Properties and Surface Morphology of ZnTe Thin films Prepared by Multiple Potential Steps

Murilo F. Gromboni; Francisco W. S. Lucas; Lucia H. Mascaro

How to cite this article

 

This picture shows the morphology and photocurrent of ZnTe thin films growth by multiple potentiostatic steps

http://dx.doi.org/10.5935/0103-5053.20140020

Published online: January 24, 2014

J. Braz. Chem. Soc. 2014, 25(3), 532-539

On the Use of the Power-Law Model for Interpreting Constant-Phase-Element Parameters

Mark E. Orazem; Bernard Tribollet; Vincent Vivier; Douglas P. Riemer; Erick White; Annette Bunge

How to cite this article

 

Electrochemical impedance spectroscopy: method shown to extract meaningful physical properties from CPE parameters

http://dx.doi.org/10.5935/0103-5053.20140021

Published online: January 28, 2014

J. Braz. Chem. Soc. 2014, 25(3), 540-549

Melt sonoquenching: an Affective Process to Obtain New Hybrid Material and Achieve Enhanced Electrochromic Performances Based on V2O5/2,4,5-tris(1-methyl-4-pyridinium)-imidazolide Tetrafluoroborate Nanofibers

Renato S. de Oliveira; Juliana da S. Goulart; Fabio S. Miranda; Eduardo A. Ponzio

How to cite this article

 

A new synthetic method to prepare hybrid nanomaterials based in melt sonoquenching was developed. This procedure is easily applicable for production of hybrid nanomaterials. The new hybrid presents a good electrochromic performance.

http://dx.doi.org/10.5935/0103-5053.20140030

Published online: February 7, 2014


J. Braz. Chem. Soc. 2014, 25(3), 550-559

A New Electrochemical Sensor Containing a Film of Chitosan-Supported Ruthenium: Detection and Quantification of Sildenafil Citrate and Acetaminophen

Fábio Godoy Delolo; Claudia Rodrigues; Monize Martins da Silva; Luis Rogério Dinelli; Felix Nicolai Delling; Julio Zukerman-Schpector; Alzir Azevedo Batista

How to cite this article

 

The chitosan-supported ruthenium compound (RuQT) was synthesized and characterized. Its obtained film on the glass carbon electrode surface was applied as an electrochemical sensor for detection and quantification of sildenafil citrate (Viagra®) and acetaminophen (Tylenol®) analytes.

http://dx.doi.org/10.5935/0103-5053.20140031

Published online: February 7, 2014


J. Braz. Chem. Soc. 2014, 25(3), 560-571

Hybrid Microbial-Photosynthetic Biofuel Cells for Simultaneous Bacterial Glycerol Biotransformation and Algal Carbon Dioxide Capture

Camilo Enrique La Rotta Hernández; Ady Luna Leite; Patricia Virginia Dantas; Sergio Peres Ramos; Maria de los Angeles Perez; Galba Maria de Campos Takaki

How to cite this article

 

Upper figure: bicompartmented microbial fuel cell for glycerol biotransformation using Pseudomonas aeruginosa bioanode and chemical redox pair cathode; and lower figure: hybrid photosynthetic fuel cell for glycerol biotransformtion in bacterial anodes and CO2 co-sequestration using Chlorella vulgaris biocathode.

http://dx.doi.org/10.5935/0103-5053.20140032

Published online: February 7, 2014

J. Braz. Chem. Soc. 2014, 25(3), 572-578

Electrochemical Synthesis of the Copolymer Poly(2-methoxy-5-bromo-p-phenylenevinylene)/(2,5-dicyano-p-phenylenevinylene) (MB-PPV/DCN-PPV): Tuning Properties

Karine C. C. W. S. Klider; Fábio S. Santos; Laura O. Péres; Karen Wohnrath; Jarem R. Garcia

How to cite this article

 

The electrical and structural characterization of the copolymer cop-MB-PPV/DCN-PPV indicated that itpresents a D-A characteristic, and for this reason is a good candidate to be used as active layer in photovoltaic devices.

http://dx.doi.org/10.5935/0103-5053.20140033

Published online: February 7, 2014

J. Braz. Chem. Soc. 2014, 25(3), 579-588

Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process

Lucio C. Almeida; Maria V. B. Zanoni

How to cite this article

 

Photoelectrocatalytic oxidation of Acid Red 29 dye using Pt/TiO2NT photoelectrodes. The degradation efficiency was enhanced remarkably when Pt nanoparticles were deposited, due to better use of irradiation and minimization of charge recombination.

http://dx.doi.org/10.5935/0103-5053.20140034

Published online: February 11, 2014

J. Braz. Chem. Soc. 2014, 25(3), 589-596

A Comparative Study Between Two Different Conventional Working Electrodes for Detection of Δ9-Tetrahydrocannabinol Using Square-Wave Voltammetry: a New Sensitive Method for Forensic Analysis

Marco A. Balbino; Izabel C. Eleotério; Laura S. de Oliveira; Matheus M. T. de Menezes; José Fernando de Andrade; Antônio José Ipólito; Marcelo F. de Oliveira

How to cite this article

 

The voltammetric analysis of ∆9-THC in marijuana seized samples. A previous extraction of cannabinoids (1,2) and subsequent purification by thin layer chromatography (3) is essential for optimization of ∆9-THC detection by SWV analysis (4,5).

http://dx.doi.org/10.5935/0103-5053.20140040

Published online: February 14, 2014

J. Braz. Chem. Soc. 2014, 25(3), 597-601

Morphological and Electrochemical Characteristics of Electrosynthesized PPy/CD Composite

Rubênia S. Monte; Lloyd R. V. Kotzebue; Dalila L. Alexandre; Roselayne F. Furtado; Jorge A. C. Santos; Joana D. P. Dantas; Carlucio R. Alves

How to cite this article

 

Cardanol is a byproduct of processing cashew nuts of Anacardium occidentale L. It was used in the electropolymerization process of conductive polypyrrole/cardanol composite.

http://dx.doi.org/10.5935/0103-5053.20140043

Published online: February 18, 2014

J. Braz. Chem. Soc. 2014, 25(3), 602-609

Electrochemical Study of Simple Coumarin and its Determination in Aqueous Infusion of Mikania glomerata

Daniela M. Miyano; Thays Lima; Fábio R. Simões; Mauro A. La-Scalea; Hueder P. M. Oliveira; Lucia Codognoto

How to cite this article

 

Current components for the simple coumarin reduction by SWV at pH 12.0 in 0.1 mol L-1 BR buffer.

http://dx.doi.org/10.5935/0103-5053.20140046

Published online: February 28, 2014

Online version ISSN 1678-4790 Printed version ISSN 0103-5053
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