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Citation: MA Chun-an, HUANG Ye, TONG Shao-ping, ZHANG Wei-min. The Catalytic Behavior of Tungsten Carbide for the Electroreduction of p-nitrophenol[J]. Acta Physico-Chimica Sinica, ;2005, 21(07): 721-724. doi: 10.3866/PKU.WHXB20050705 shu

The Catalytic Behavior of Tungsten Carbide for the Electroreduction of p-nitrophenol

1.
Department of Applied Chemistry, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Research Center of Nano Science & Technology, Zhejiang University of Technology, Hangzhou 310032

Received Date: 23 November 2004
Available Online: 15 July 2005

Tungsten carbide powder microelectrode (WC-PME) was prepared from tungsten carbide (WC) powders to be used as an electrocatalyst. Electrochemical reduction behaviour of p-nitrophenol (PNP) on the WC-PME was investigated using cyclic voltammetry (CV) and linear sweep voltammetry. It was found that reduction potential of PNP on the WC-PME was more positive than that on the Cu-Hg microelectrode and that WC had higher catalytic activity in the electroredution of PNP than Cu-Hg. Although the reduction potentials of PNP on the WC-PME and the Pt microelectrode were close to each other, the reduction current of PNP on the WC-PME was about 5 times as large as that on the Pt microelectrode. This result was mainly attributed to the surface morphological structure of WC.
- Tungsten carbide;Powder microelectrode;p-nitrophenol; Electroreduction;Electrocatalyst
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