关键词:

碳化钨, 活性炭, 对硝基苯酚, 粉末微电极, 电催化活性

Abstract:

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.

Key words:

碳化钨, 活性炭, 对硝基苯酚, 粉末微电极, 电催化活性