Electrochemical behavior of rigid carbon nanotube composite electrodes

Pacios, Mercè; Valle, Manel del; Bartrolı́, Jordi; Esplandiu, M.J.

doi:10.1016/j.jelechem.2008.03.019

Cited by 116 publications

(89 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A more detailed description of the application of this method can be found in previous work. 39 It is noted that this value is similar to that reported by Pacios et al 40 using bamboo-like carbon nanotube composite electrodes, employing the same approach. The enhanced electron transfer properties of the GNS-modified electrodes were also clear from electrochemical impedance spectroscopy data.…”

supporting

confidence: 86%

Electrochemical ascorbic acid sensor based on DMF-exfoliated graphene

et al. 2010

View full text Add to dashboard Cite

This paper describes the electron transfer properties of graphene nano-sheets (GNSs) immobilised on pyrolysed photoresist film (PPF) electrodes. The former are produced by the dispersion and exfoliation of graphite in dimethylformamide, and they are characterised using transmission electron microscopy, scanning electron microscopy and Raman spectroscopy. Cyclic voltammetry and electrochemical impedance spectroscopy are used to quantify the effect of the GNSs on electrochemical surface area and on electron transfer kinetics. Compelling evidence is reported in relation to the importance of edgeplane sites and defects in the promotion of electron transfer at carbon nanostructures. A novel ascorbic acid (vitamin C) sensor is presented based on the PPF/GNS system, which is effective in the range 0.4 to 6.0 mM, with a 0.12 mM detection limit. The selectivity of the sensor is demonstrated using a commercially available vitamin C supplement. This is the first report of the electrochemical properties of graphene nano-sheets produced using liquid-phase exfoliation, and it will serve as an important benchmark in the development of inexpensive graphene-based electrodes with high surface area and electro-catalytic activity.

show abstract

supporting

confidence: 86%

Electrochemical ascorbic acid sensor based on DMF-exfoliated graphene

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Composite electrodes were prepared, following the standard protocol in our laboratories (Pumera, 2006;Pacios, 2008). The composite was prepared by first mixing manually the epoxy resin and the hardener in a 20:3 ratio (w:w), respectively.…”

mentioning

confidence: 99%

Carbon Nanotubes as Suitable Electrochemical Platforms for Metalloprotein Sensors and Genosensors

Pacios¹,

Martin-Fernandez²,

Sarria-Villa³

et al. 2011

Carbon Nanotubes - Growth and Applications

Self Cite

View full text Add to dashboard Cite

“…At this moment carbon nanotube composites comprise a very dynamical emerging field and it turns out very difficult to cover the entire spectrum of such topic (Ajayan et al, 2003;Rubianes & Rivas, 2003;Wang & Musameh, 2003;Barrera et al, 2005, Harris, 2004Moniruzzaman et al, 2006;Spitalsky et al, 2010;Li et al 2008;Xiao & Li, 2008). Therefore in this chapter we will focus on conducting nanocomposites based on carbon nanotubes/insulating polymers and special attention will be stressed on CNT epoxy composites as robust, easy-processing and cheap platforms for electrochemical applications (Céspedes et al, 1996;Pumera et al, 2006;Pacios et al, 2008;Olivé-Monllau et al, 2010). We will introduce an electrochemical characterization approach based mainly on impedance spectroscopy which can allow us to find the optimized CNT composition for electroanalytical purposes and which can be extended to other electrochemical applications.…”

Section: Advances In Composite Materials For Medicine and Nanotechnolmentioning

confidence: 99%

“…It is worth noting the smaller percolation threshold of the CNT composite as compared to its graphite analog. Another way to characterize the electrical properties of the carbon composites is by using conductive Atomic Force Microscopy (C-AFM) (O'Hare et al, 2002;Pacios et al, 2008). This technique consists in the use of a conductive tip operating in standard contact mode with the sample.…”

Section: Electrical Properties Of Composites: Percolation Curvesmentioning

confidence: 99%