| dc.creator | Ferreira G.M.M. | |
| dc.creator | De Oliveira F.M. | |
| dc.creator | Leite F.R.F. | |
| dc.creator | Maroneze C.M. | |
| dc.creator | Kubota L.T. | |
| dc.creator | Damos F.S. | |
| dc.creator | Luz R.D.C.S. | |
| dc.date | 2013 | |
| dc.date | 2015-06-25T19:16:10Z | |
| dc.date | 2015-11-26T15:14:07Z | |
| dc.date | 2015-06-25T19:16:10Z | |
| dc.date | 2015-11-26T15:14:07Z | |
| dc.date.accessioned | 2018-03-28T22:24:13Z | |
| dc.date.available | 2018-03-28T22:24:13Z | |
| dc.identifier | | |
| dc.identifier | Electrochimica Acta. , v. 111, n. , p. 543 - 551, 2013. | |
| dc.identifier | 134686 | |
| dc.identifier | 10.1016/j.electacta.2013.08.037 | |
| dc.identifier | http://www.scopus.com/inward/record.url?eid=2-s2.0-84883509237&partnerID=40&md5=cfa6e3d5f3b422630ef8e5b309439f26 | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/89421 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/89421 | |
| dc.identifier | 2-s2.0-84883509237 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1258796 | |
| dc.description | The modification of glassy carbon (GC) electrode with deoxyribonucleic acid (DNA) and grapheneis utilized as a new efficient platform for entrapment of methylene blue (MB). Electrochemical andelectroanalytical properties of the modified electrode (DNA/graphene/MB) were investigated by cyclicvoltammetry (CV), electrochemical impedance spectroscopy (EIS) and amperometry techniques. Cyclicvoltammetric results indicated the excellent electrocatalytic activity of the resulting electrode toward oxidation of β-nicotinamide adenine dinucleotide (NADH) at reduced overpotential (0.1 V vs. Ag/AgCl).It has been found that the DNA/graphene/MB modification has significantly enhanced the effective electrode response toward NADH oxidation. Cyclic voltammetry and rotating disk electrode (RDE) exper-iments indicated that the NADH oxidation reaction involves two electrons and an electrocatalytic rateconstant (kobs) of 1.75 × 106mol-1L s-1. The electrochemical sensor presented better performance in0.1 mol L-1phosphate buffer at pH 7.0. Other experimental parameters, such as the DNA, graphene, MB concentrations and the applied potential were optimized. Under optimized conditions, a linear response range from 10 μmol L-1to 1.50 mmol L-1was obtained with a sensitivity of 12.75 μA L μmol -1. The detection and quantification limits for NADH determination were 1.0 μmol L-1and 3.3 μmol L-1, respectively.© 2013 Elsevier Ltd. All rights reserved. | |
| dc.description | 111 | |
| dc.description | | |
| dc.description | 543 | |
| dc.description | 551 | |
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| dc.language | en | |
| dc.publisher | | |
| dc.relation | Electrochimica Acta | |
| dc.rights | fechado | |
| dc.source | Scopus | |
| dc.title | Dna And Graphene As A New Efficient Platform For Entrapment Of Methylene Blue (mb): Studies Of The Electrocatalytic Oxidation Of β-nicotinamide Adenine Dinucleotide | |
| dc.type | Artículos de revistas | |
