Electrochemical behavior of nitrobenzene on WC/carbon nanotube powder microelectrode
WC/carbon nanotube(CNT)nanocomposite was prepared by surface decoration and in situ reduction technique and subsequently was used as an electrocatalyst to prepare the WC/CNT powder microelectrode(WC/CNT-PME).Electrochemical reduction behavior of nitrobenzene on the WC/CNTPME was investigated by chronoamperometry and cyclic voltammetry,combined with in situ FTIR,the influences of scan rate and temperature on the electroreduction behavior of nitrobenzene were discussed. Results showed that WC/CNT nanocomposite showed better catalytic activity for the electroreduction of nitrobenzene than CNTs and WC nanoparticles,the electroreduction of nitrobenzene to p-aminophenol on the WC/CNT-PME was an irreversible process,which was controlled by adsorption.