Graphene Nanoplatelets for Screen-Printed Nonenzymatic Voltammetric H2O2 Sensors
Five types of graphene nanoplatelets were used as the functional phase in polymer composites comprising electrodes for voltammetric sensors. Electrodes were fabricated on poly(ethylene terephthalate) foil by screen-printing technique and then examined for assessment of the electrochemically active area surface, presence of electrical charge, current density, sensitivity and selectivity for hydrogen peroxide—A common biomedical analyte. Concentrations of the analyte as well as other environmental factors (electrolytes concentrations, pH, interferents) were modelling biological conditions of human tear fluid. Nanoplatelets' geometric dimensions were found to affect charge transfer on the electrodes to a greater degree than development of the active surface. This resulted in high oxidation current density on the surface of graphene nanoplatelets with greatest diameter and lowest thickness, yielding high sensitivity (82.02 μA·mm–2·mM–1).
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: September 1, 2017
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites