TENG Wenjuan, MAO Xinbiao, MA Chun’an. Preparation and electrocatalytic activity of WC/C composite for p-nitrophenol electroreduction[J]. CIESC Journal, 2010, (5): 1313-1318.
TENG Wenjuan, MAO Xinbiao, MA Chun’an. Preparation and electrocatalytic activity of WC/C composite for p-nitrophenol electroreduction[J]. CIESC Journal, 2010, (5): 1313-1318.DOI:
With 10%(mass) ammonium metatungstate(AMT)as precursor,tungsten carbide(WC)/active carbon(C)composite was prepared by surface decoration and in situ reduction techniques in the atmosphere of CH4/H2.The samples were characterized by FT-IR,XRD and SEM.The results showed that hydroxyl and carbonyl functional groups on the outer surface of active carbon were significantly increased after acid treatment,and the sample WC/C composite was composed of WC,C and W2C,and tungsten carbide was supported on the outer surface of active carbon uniformly,with the particle size of 50—100 nm.The electrocatalytical activity and electrochemical stability of WC/C,WC,C for the eletroreduction of p-nitrophenol were investigated by cyclic voltammetry.The results showed that WC/C exhibited better catalytic activity for the eletroredution of p-nitrophenol than WC and C,and it also had good electrochemical stability during the process of eletroredution of p-nitrophenol in alkalic solution.