Application of Electrochemically Reduced Graphene Oxide on Screen-Printed Ion-Selective Electrode
- 29 February 2012
- journal article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 84 (7), 3473-3479
- https://doi.org/10.1021/ac203480z
Abstract
In this study, a novel disposable all-solid-state ion-selective electrode using graphene as the ion-to-electron transducer was developed. The graphene film was prepared on screen-printed electrode directly from the graphene oxide dispersion by a one-step electrodeposition technique. Cyclic voltammetry and electrochemical impedance spectroscopy were employed to demonstrate the large double layer capacitance and fast charge transfer of the graphene film modified electrode. On the basis of these excellent properties, an all-solid-state calcium ion-selective electrode as the model was constructed using the calcium ion-selective membrane and graphene film modified electrode. The mechanism about the graphene promoting the ion-to-electron transformation was investigated in detail. The disposable electrode exhibited a Nernstian slope (29.1 mV/decade), low detection limit (10–5.8 M), and fast response time (less than 10 s). With the high hydrophobic character of graphene materials, no water film was formed between the ion-selective membrane and the underlying graphene layer. Further studies revealed that the developed electrode was insensitive to light, oxygen, and redox species. The use of the disposable electrode for real sample analysis obtained satisfactory results, which made it a promising alternative in routine sensing applications.Keywords
This publication has 37 references indexed in Scilit:
- Potentiometric Strip Cell Based on Carbon Nanotubes as Transducer Layer: Toward Low-Cost Decentralized MeasurementsAnalytical Chemistry, 2011
- Comparison of Multi‐walled Carbon Nanotubes and Poly(3‐octylthiophene) as Ion‐to‐Electron Transducers in All‐Solid‐State Potassium Ion‐Selective ElectrodesElectroanalysis, 2011
- An effective nanostructured assembly for ion-selective electrodes. An ionophore covalently linked to carbon nanotubes for Pb2+determinationChemical Communications, 2010
- Polypyrrole microcapsules as a transducer for ion-selective electrodesElectrochemistry Communications, 2010
- Single-piece solid-contact ion-selective electrodes with polymer–carbon nanotube compositesSensors and Actuators B: Chemical, 2010
- Immediate Detection of Living Bacteria at Ultralow Concentrations Using a Carbon Nanotube Based Potentiometric AptasensorAngewandte Chemie, 2009
- Fullerene-based electrochemical buffer layer for ion-selective electrodesThe Analyst, 2008
- Development of a solid-state thick film calcium ion-selective electrodeSensors and Actuators B: Chemical, 2003
- All-solid-state planar miniature ion-selective chloride electrodeAnalytica Chimica Acta, 2002
- Preparation of Graphitic OxideJournal of the American Chemical Society, 1958