Carbon nanotubes/carbon paper composite electrode for sensitive detection of catechol in the presence of hydroquinone

The fabrication and application of carbon nanotubes/carbon paper (CNTs/CP) composite electrochemical sensors are reported. This sensing platform allows the sensitive determination of catechol in the range of 1 mu M to 100 mu M with a detection limit of 0.29 mu M. The catechol detection in tea samples demonstrates the applicability of this method. The present study explores an interesting and significant application of CNTs/CP composite in electroanalysis. (C) 2013 Elsevier B.V. All rights reserved.