An ordered mesoporous carbon/didodecyldimethylammonium bromide composite and its application in the electro-catalytic reduction of nitrobenzene

An ordered mesoporous carbon (OMC) material was prepared. This material was characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD) and N-2-adsorption isotherms. For the application of OMC, an OMC/didodecyldimethylammonium bromide (DDAB) composite was prepared and used as electrode modification material. The glassy carbon electrode (GCE) modified with this composite exhibit electro-catalytic activity toward the reduction of nitrobenzene (NB), which provieds a method of NB determination. For the electrochemical determination of NB, the catalytic cathodic peak currents were found to have a linear relationship with the NB concentration in the range from 2.0 x 10(-5) to 2.9 x 10(-3) mol/L with the detection limit down to 10(-5) mol/L The modified electrode also shows good reproducibility and stability for the determination of NB. (c) 2008 Elsevier B.V. All rights reserved.