Cover Picture - Journal of the Brazilian Chemical Society Picture 1585 Why to publish a special issue for young researchers? Roberto M. Torresi Editorial Contents Vol. 28, No. 9, September,

Cover Picture

1585 Why to publish a special issue for young researchers?Roberto M. Torresi

Editorial

Contents

Vol. 28, No. 9, September, 2017

ISSN 0103-5053JBCSJournal of the Brazilian Chemical Society

Special Issue Young Brazilian Researchers.

ANOS

J. Braz. Chem. Soc.vi

1608 Nano-Sized Silver Colloids Produced and Stabilized by Amino-Functionalized Polymers: Polymer Structure-Nanoparticle Features and Polymer Structure-Growth Kinetics RelationshipsCarin C. S. Batista, Lindomar J. C. Albuquerque, Caroline A. S. Ribeiro, Carlos E. de Castro, Erica G. A. Miranda, Iseli L. Nantes, Brunno L. Albuquerque, Mateus B. Cardoso and Fernando C. Giacomelli

Graphical AbstractFacile synthesis of highly stable silver colloids is achieved by using

reducing/stabilizer amino-functionalized polymers without the aid of any other external agent.

1586 The Chemical Conversion of Biomass-Derived Saccharides: an OverviewJean Marcel R. Gallo and Marilia A. Trapp

Graphical AbstractThe challenges and perspectives on the use of the saccharide fraction on lignocellulosic biomass as industrial feedstock are

presented and discussed.

1630 AgAu Nanotubes: Investigating the Effect of Surface Morphologies and Optical Properties over Applications in Catalysis and Photocatalysis Thenner S. Rodrigues, Anderson G. M. da Silva, Arthur B. L. de Moura, Rafael S. Geonmonond and Pedro H. C. Camargo

Graphical AbstractThe effect of controlled surface morphologies properties in

AgAu nanotubes over catalytic and plasmonic photocatalytic performance was studied.

1619 Nanostructured Antigen-Responsive Hydrogels Based on Peptides for Leishmaniasis DetectionSivoney F. Souza, Sergio Kogikoski Jr., Emerson R. Silva and Wendel A. Alves

Graphical AbstractEncapsulating antigens in a peptide-based hydrogel matrix appears as an innovative opportunity to develop new biosensing devices for diagnosis.

Account

Articles

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viiVol. 28, No. 9, 2017

1650 Batch-Injection Amperometric Determination of Pyrogallol in Biodiesel Using a Multi-Walled Carbon Nanotube Modified ElectrodeRafael M. Cardoso, Rafael M. Dornellas, Ana P. Lima, Rodrigo H. O. Montes, Eduardo M. Richter and Rodrigo A. A. Munoz

Graphical AbstractMWCNT-modified electrode coupled with batch injection analysis

with amperometric detection to quantify the antioxidant pyrogallol in biodiesel.

1657 Determination of Inorganic Contaminants in Electrical and Electronic Equipment after Digestion Using Microwave-Assisted Single Reaction ChamberJussiane S. S. Oliveira, Sindy R. Krzyzaniak, Rochele S. Picoloto, Rodrigo C. Bolzan and Paola A. Mello

Graphical AbstractThe feasibility of wet digestion using microwave-assisted

single reaction chamber for waste of electric and electronic equipment was demonstrated.

1639 Silver Nanocoatings at Large Length Scales: Influence of the AgNPs Morphology and Capping Agents on the Coating Chemical Stability and Antimicrobial EffectFrancisco A. Sousa, Victor T. Noronha, Terezinha F. Machado, José V. Silveira, Francisco A. Cunha, Pierre B. A. Fechine and Amauri J. Paula

Graphical AbstractLarge-field X-ray imaging performed in a scanning electron microscope

enables the identification of more than 100,000 agglomerates present in nanocoatings formed by AgNPs produced from different sources and with

different capping agents.

1665 Spectroscopic Characterization of Charge Transfer Complexes of TCNE with Aromatic Amines - The First Step of Tricyanovinylation ReactionNatália M. Monezi and Rômulo A. Ando

Graphical AbstractResonance Raman, UV-Vis and DFT characterization of the charge transfer

complexes formed by TCNE and aromatic amines.

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J. Braz. Chem. Soc.viii

1682 Strategy for Treating a Landfill Leachate by Integration of Physico-Chemical and Photo-Fenton ProcessesValdislaine M. Silva, Oswaldo Gomes Júnior, Jader O. Silva, Arlene B. S. Nossol, Raquel M. F. Sousa, Antonio E. H. Machado and Alam G. Trovó

Graphical AbstractA protocol was proposed, aiming at treating sanitary landfill leachate,

integrating physico-chemical processes (coagulation-flocculation-decantation, pH adjustment to 5 and membrane filtration) and modified

solar/photo-Fenton reactions.

1691 Feasibility of DLLME for the Extraction and Preconcentration of As and Cd in Sugar for Further Determination by ICP-MSTassia S. Seeger, Paula Dalla Vecchia, Eduarda Q. Machado, Karine Reinke, Marcia F. Mesko and Fabio A. Duarte

Graphical AbstractA dispersive liquid-liquid microextraction (DLLME) method for extraction and preconcentration of As and Cd in sugar for further determination by

inductively coupled plasma mass spectrometry (ICP-MS) was proposed.

1673 Microwave-Assisted Oxidation of Organic Matter Using Diluted HNO3 under O2 Pressure: Rationalization of the Temperature Gradient Effect for Acid RegenerationCezar A. Bizzi, Juliano S. Barin, Jussiane S. S. Oliveira, Giancarlo Cravotto and Erico M. M. Flores

Graphical AbstractThe influence of temperature gradient was critically evaluated

for understanding in situ HNO3 regeneration reactions for organic matter oxidation.

1698 Bioelectrooxidation of Ethanol Using NAD-Dependent Alcohol Dehydrogenase on Oxidized Flexible Carbon Fiber ArraysAndressa R. Pereira, João C. P. de Souza, Andressa D. Gonçalves, Kamila C. Pagnoncelli and Frank N. Crespilho

Graphical AbstractOxidized carbon fiber modified with NAD-dependent alcohol

dehydrogenase for ethanol bioelectrocatalysis.

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ixVol. 28, No. 9, 2017

1715 Tailored Silica Nanoparticles Surface to Increase Drug Load and Enhance Bactericidal ResponseLuciane F. de Oliveira, Karim Bouchmella, Agustin S. Picco, Larissa B. Capeletti, Kaliandra A. Gonçalves, João Henrique Z. dos Santos, Jörg Kobarg and Mateus B. Cardoso

Graphical AbstractAmino-surface functionalization of silica nanoparticles was used as

a strategy to increase the water-insoluble drug load and enhance antimicrobial properties.

1725 High Order Cyclic Voltammograms During Electrooxidation of Ethanol Catalyzed by GoldKaline N. da Silva, Suelen T. Maruyama and Elton Sitta

Graphical AbstractComplex behavior was found during ethanol electrooxidation onto gold and the results interpreted as a surface roughening/relaxation effect.

Cations display an important and unexpected role in this process.

1708 Confocal Fluorescence Microscopy and Kinetics of the Cr3+-Chromate Ion Oxidation Equilibria at the Solid Liquid InterfaceGizelle I. Almerindo, Anika P. A. Gaborim, Lucas M. Nicolazi, Muhammad Idrees, Faruk Nome, Haidi D. Fiedler and Rene A. Nome

Graphical AbstractConfocal microscopy images of Cr3+ in pearls before and after

oxidation to Cr6+.

1732 Nickel-Copper Alloys Modified Electrodes: an Electrochemical Study on their Interfacial and Supercapacitive PropertiesFranciele Wolfart, Bianca R. Brito, Luís F. Marchesi and Marcio Vidotti

Graphical AbstractNi/Cu alloys were studied in their supercapacitive properties.

The bare copper substrates were modified by a simple and straightforward methodology.

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J. Braz. Chem. Soc.x

1752 Photoelectroanalytical Detection of Adrenaline Based on DNA and TiO2 Nanoparticles Sensitized with Bis(ethylenedithio)tetrathiafulvalene Exploiting LED LightThiago Augusto D. Santos, Sakae Yotsumoto Neto, Cleidivan S. Macena, Rita de Cássia S. Luz and Flávio S. Damos

Graphical AbstractDNA/anatase TiO2 nanoparticles sensitized with bis(ethylenedithio)

tetrathiafulvalene composite for photoelectrochemical detection of adrenaline exploiting a commercial light emitting diode as

illumination source.

1760 Degrading Pesticides with Waste Product: Imidazole-Functionalized Rice Husk Catalyst for Organophosphate DetoxificationJosé G. L. Ferreira and Elisa S. Orth

Graphical AbstractA rice husk-derived catalyst containing imidazole was obtained, with high catalytic efficiency for degrading organophosphates, such as the

pesticide Paraoxon.

1741 Influence of the Protonatable Site in the Photo-Induced Proton-Coupled Electron Transfer between Rhenium(I) Polypyridyl Complexes and HydroquinoneFernando S. Prado, Sinval F. Sousa, Antonio Eduardo H. Machado and Antonio Otavio T. Patrocinio

Graphical AbstractThe influence of the protonatable site of the ancillary ligand, L, in

the photo-induced proton coupled electron transfer of fac-[Re(CO3)(2,2’-bpy)(L)]+ with hydroquinone is investigated through theoretical and

photophysical studies.

1768 Improved NADH Electroanalysis on Nickel(II) Phthalocyanine Tetrasulfonic Acid/Calf Thymus Deoxyribonucleic Acid/Reduced Graphene Oxide CompositeIzabela Aparecida L. Ribeiro, Sakae Yotsumoto-Neto, Wallans T. P. dos Santos, Ridvan N. Fernandes, Marilia O. F. Goulart, Flavio S. Damos and Rita de Cássia S. Luz

Graphical AbstractNADH oxidation on a composite based on deoxyribonucleic acid from calf

thymus (CT-DNA), nickel tetrasulfonated phthalocyanine (NiTsPc) and reduced graphene oxide (rGO).

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xiVol. 28, No. 9, 2017

1788 Synthesis, Characterization, and Photocatalytic Activity of Pure and N-, B-, or Ag- Doped TiO2

Paula C. S. Bezerra, Rodrigo P. Cavalcante, Aline Garcia, Heberton Wender, Marco A. U. Martines, Gleison A. Casagrande, Jaime Giménez, Pilar Marco, Silvio C. Oliveira and Amilcar Machulek Jr.

Graphical AbstractPhotocatalytic degradation of methylene blue using N-doped TiO2 was

significantly more pronounced than with pure TiO2.

1803 Investigation of Electrocatalysts for Selective Reduction of CO2 to CO: Monitoring the Reaction Products by on line Mass Spectrometry and Gas ChromatographyMariana R. Camilo, Wanderson O. Silva and Fabio H. B. Lima

Graphical AbstractCO2 electrochemical reduction on metal nanoparticle-catalyzed porous

electrode interface on line coupled to a differential electrochemical mass spectrometer (DEMS) for instantaneous monitoring of the

gaseous products.

1779 Determination of Hg in Biological Samples and Ethanol Fuel by Photochemical Vapor Generation after Pre-Concentration in a Gold Trap Eliezer Q. Oreste, Richard M. de Oliveira, Anderson S. Ribeiro, Talal S. Mahmoud and Mariana A. Vieira

Graphical AbstractThe photochemical vapor generation with pre-concentration in Au column

was applied to determine Hg in biological and ethanol fuel samples.

1816 The Effect of Hydrothermal Treatment on the Morphologies and Optical Properties of Upconversion NaYF4:Ln3+ CrystalsMarcos A. Calil Júnior, Átila A. C. Melo, Emille M. Rodrigues, Fernando A. Sigoli and Marcelo O. Rodrigues

Graphical AbstractNaYF4:Ln3+ crystals from 25 nm to 6.4 μm average diameter was obtained

by hydrothermal treatments.

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J. Braz. Chem. Soc.xii

1830 Synthesis and Photophysical Characterization of Proton Transfer-Based Thiourea Derivatives: Potential Application as Colorimetric Naked-Eye Chemosensor for Fluoride Detection in SolutionCláudia B. da Silva, Thais Kroetz, Fabiano S. Santos and Fabiano S. Rodembusch

Graphical AbstractESIPT (excited state intramolecular proton transfer) based thiourea dyes were synthesized and presented optical sensing of fluoride by the naked-

eye and UV-Vis spectroscopy.

1822 Prediction of Total Acid Number in Distillation Cuts of Crude Oil by ESI(−) FT-ICR MS Coupled with Chemometric ToolsLuciana A. Terra, Paulo R. Filgueiras, Rosana C. L. Pereira, Alexandre O. Gomes, Géssica A. Vasconcelos, Lilian V. Tose, Eustáquio V. R. Castro, Boniek G. Vaz, Wanderson Romão and Ronei J. Poppi

Graphical AbstractChemometrics workflow used on the prediction of total acid number in

distillation cuts of crude oil.

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