author = "Silva, Tiago Almeida and Zanin, Hudson and Saito, Eduardo and 
                         Medeiros, Roberta Antigo and Vicentini, Fernando Campanh{\~a} and 
                         Corat, Evaldo Jos{\'e} and Fatibello-Filho, Orlando",
          affiliation = "{Federal University of Sao Carlos} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and Center of Engineering and Exact Sciences, 
                         State University of West Paran{\'a}, Rua da Faculdade 2550, 
                         Toleto, CEP: 85903000,PR, Brazil and {Federal University of Sao 
                         Carlos} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Federal University of Sao Carlos}",
                title = "Electrochemical behaviour of vertically aligned carbon nanotubes 
                         and graphene oxide nanocomposite as electrode material",
              journal = "Electrochimica Acta",
                 year = "2014",
               volume = "119",
                pages = "114--119",
             keywords = "Brunauer-emmett-teller surface areas, Fast electron transfer, 
                         Graphene oxides, Microwave chemical vapor deposition, Oxygen 
                         plasma etching, Vertically aligned, Vertically aligned carbon 
                         nanotube, X ray photoemission spectroscopy, Carbon nanotubes, 
                         Chemical vapor deposition, Cyclic voltammetry, Electrocatalysis, 
                         Electron transitions, Graphene, Nanocomposites, Oxygen, 
                         Photoelectron spectroscopy, Plasma etching, Scanning electron 
                         microscopy, Wetting, Surfaces.",
             abstract = "Vertically aligned carbon nanotubes/graphene oxide nanocomposite 
                         (VACNT-GO) has been prepared and applied as electrode material. 
                         First, dense packets of VACNT were prepared in microwave chemical 
                         vapor deposition reactor, and then functionalized by oxygen plasma 
                         etching. We observed that oxygen plasma could exfoliate carbon 
                         nanotubes tips and provide oxygen group attachment on its surface, 
                         changing its wettability as well. This change in wettability of 
                         the VACNT is crucial for its electrochemical application, since 
                         as-grown VACNT is super-hydrophobic. After exfoliation and 
                         functionalization, the electrochemical tests were performed using 
                         potassium ferrocyanide. The cyclic voltammetry (CV) and impedance 
                         spectroscopy revealed fast electron transfer kinetics on this new 
                         material. The CV peak potential separation was 59 mV, suggesting 
                         ideal reversibility at the electrode. The Nyquist and Bode plots 
                         were well-fitted as modified Randles equivalent electrical 
                         circuits with non-charge transfer impedance. This new highly 
                         porous nanostructures have been intensively characterized by 
                         scanning electron microscopy, Brunauer-Emmett-Teller surface area, 
                         surface wettability, Raman and X-ray photoemission spectroscopy. 
                         Our results suggest this new material has a relevant potential for 
                         future applications in electrocatalysis and (bio)sensors.",
                  doi = "10.1016/j.electacta.2013.12.024",
                  url = "http://dx.doi.org/10.1016/j.electacta.2013.12.024",
                 issn = "0013-4686",
                label = "scopus 2014-05 SilvaZaSaMeViCoFa:2014:ElBeVe",
             language = "en",
           targetfile = "1-s2.0-S001346861302464X-main-1.pdf",
                  url = "http://dx.doi.org/10.1016/j.electacta.2013.12.024",
        urlaccessdate = "25 jan. 2021"