Výsledky vyhledávání - "Rafael M. Dornellas"

An improved drop casting electrochemical strategy for furosemide quantification in natural waters exploiting chemically reduced graphene oxide on glassy carbon electrodes

Autor: Fábio G. Lepri, Sancler C Vasconcelos, Leonardo G. de Almeida, Eduardo M Rodrigues, Rafael M. Dornellas, Felipe S. Semaan, Wagner F. Pacheco

Publikováno v: Analytical and Bioanalytical Chemistry. 412:7123-7130

This work exploits the applicability of a chemically reduced graphene oxide (CRGO) modification on the electrochemical response of a glassy carbon electrode (GCE) for the first-time sensitive determination of furosemide in natural waters. The batch i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09a6061a356a5e185e3f931a862f7cea
https://doi.org/10.1007/s00216-020-02845-9

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Development and application of electrochemical sensor of boron-doped diamond (BDD) modified by drop casting with tin hexacyanoferrate

Autor: Y. T. Xing, Felipe S. Semaan, Janiny N. Lacerda, Eduardo A. Ponzio, Rafael M. Dornellas, Wagner F. Pacheco, Giulia A. A. Guimaraes

Publikováno v: Journal of Solid State Electrochemistry. 24:1769-1779

This work presents the development and characterization of an electrochemical sensor of tin hexacyanoferrate (SnHCF), produced from the modification by drop casting of the boron-doped diamond electrode (BDD), and its subsequent evaluation in the dete

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b09cfa706294b60bbe747a833d4ed79b
https://doi.org/10.1007/s10008-020-04558-6

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Modified dry bean pod waste (Phaseolus vulgaris) as a biosorbent for fluorescein removal from aqueous media: Batch and fixed bed studies

Autor: Wagner F. Pacheco, Edson Nossol, Felipe S. Semaan, P.H.S. Borges, Fábio G. Lepri, Rafael M. Dornellas, Igor Coreixas de Sá, P. M. C. de Oliveira

Publikováno v: Journal of hazardous materials. 424

This study presents the use of dry bean pods as a solid phase for fluorescein removal from water. The non-pretreated solid phase did not display any sorption properties for the chosen dye. However, interesting sorption properties were observed follow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a52f0420176e776cca305221731161f5
https://pubmed.ncbi.nlm.nih.gov/34823949

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Novel Electrochemical Determination of Atorvastatin by Monitoring the Suppression of a Lead Probe

Autor: Leonardo G. de Almeida, Fernanda N. Feiteira, Wagner F. Pacheco, Rafael M. Dornellas, Wanderson A. da Silva, Ricardo Q. Aucélio, Felipe S. Semaan

This work presents the development of a new electrochemical method for the indirect determination of atorvastatin (ATO) using Pb2+ as a probe at a potential value of -0.40 V. The square-wave voltammetric parameters such as the frequency (50 Hz), ampl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::032d46175148ab10dcfef365265f6096

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Chemically Reduced Graphene Oxide on Gold Electrodes from Recordable CDs: Characterization and Potential Sensing Applications

Autor: Diego P. Rocha, Felipe S. Semaan, Edson Nossol, Rafael M. Dornellas, Murilo N.T. Silva, Francisco D. da Silva, Rodrigo A.A. Munoz

Publikováno v: Journal of the Brazilian Chemical Society v.31 n.3 2020
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 31, Issue: 3, Pages: 429-437, Published: 02 MAR 2020

This work presents the development and characterization of a new chemically modified electrode exploiting recordable Au-rewritable compact discs (AuCDs) as substrate for drop casting of a chemically-reduced graphene-oxide slurry focusing on simple an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82f0c1a204d294a32b18132fe1888da7
https://doi.org/10.21577/0103-5053.20190200

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Chemically versus electrochemically reduced graphene oxide: Improved amperometric and voltammetric sensors of phenolic compounds on higher roughness surfaces

Autor: Diego P. Rocha, Eduardo M. Richter, Rodrigo A.A. Munoz, Rafael M. Dornellas, Laiz C.D. Narciso, Murilo N.T. Silva, Edson Nossol, Rafael M. Cardoso

Publikováno v: Sensors and Actuators B: Chemical. 254:701-708

The electrochemistry of hydroquinone (HQ), catechol (CT), and dopamine (DP) on a glassy-carbon electrode (GCE) modified with chemically (CRGO) and electrochemically reduced graphene oxide (ERGO) was investigated and compared for the development of am

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5aad4ae39806eb5aecff51d5c21b5334
https://doi.org/10.1016/j.snb.2017.07.070

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Electrochemically Reduced Graphene Oxide for Forensic Electrochemistry: Detection of Cocaine and its Adulterants Paracetamol, Caffeine and Levamisole

Autor: Sidnei G. Silva, Edson Nossol, Diego P. Rocha, Rafael M. Dornellas, Eduardo M. Richter, Mário H. P. Santana, Rodrigo A.A. Munoz

Publikováno v: Electroanalysis. 29:2418-2422

This communication shows the improved performance of electrochemically-reduced graphene oxide (ERGO) modified electrodes for the square-wave voltammetric detection of cocaine (COC) and its main adulterants paracetamol (PAR), caffeine (CAF) and levami

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b94accea61e2610c7a373510f1d9a665
https://doi.org/10.1002/elan.201700437

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Highly sensitive amperometric detection of drugs and antioxidants on non-functionalized multi-walled carbon nanotubes: Effect of metallic impurities?

Autor: Rafael M. Dornellas, Edson Nossol, Laiz C.D. Narciso, Diego P. Rocha, Paola A. Mello, Jéssica S. Stefano, Eduardo M. Richter, Rodrigo A.A. Munoz, Sindy R. Krzyzaniak

Publikováno v: Electrochimica Acta. 240:80-89

This work demonstrates that the electrochemistry of different molecules of pharmaceutical interest, including omeprazole, ciprofloxacin, dopamine, catechol, hydroquinone, and the antioxidants tert-butylhydroquine, gallic acid, propyl gallate, and pyr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6604c34d81dd6f5ccff0f303675235fa
https://doi.org/10.1016/j.electacta.2017.04.050

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