CIESC Journal ›› 2012, Vol. 20 ›› Issue (2): 254-261.

• 催化、动力学与反应器 • 上一篇    下一篇

碳化钨和天然沸石复合材料在水溶液中的电催化活性

程媛1, 谢伟淼1, 姚国新1, 胡素绢1, 李国华1,2,3   

  1. 1 School of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China 2 State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Hangzhou 310032, China 3 Research Center of Nanoscience and Technology, Zhejiang University of Technology, Hangzhou 310032, China
  • 收稿日期:2010-06-09 出版日期:2012-04-28 发布日期:2011-09-06

Electrocatalytic activity of tungsten carbide and natural zeolite composite in aqueous solution

CHENG Yuan1, XIE Wei-Miao1, YAO Guo-Xin1, HU Su-Juan1, LI Guo-Hua1,2,3   

  1. 1 School of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China 2 State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Hangzhou 310032, China 3 Research Center of Nanoscience and Technology, Zhejiang University of Technology, Hangzhou 310032, China
  • Received:2010-06-09 Online:2012-04-28 Published:2011-09-06

摘要： Tungsten carbide and zeolite nanocomposite was prepared by combining a mechanochemical approach with a reduction and carbonization approach, using natural zeolite and ammonia metatungstate as precursors. The sample was characterized by X-ray diffraction and scanning electron microscope. The results showed that the crystal phase of the sample is composed of zeolite, monotungsten carbide and bitungsten carbide. The mass percentage and the crystallite diameter of tungsten carbide change along with the reacted time. Its electrocatalytic activity was measured with a microelectrode system with three electrodes. The results show that its electrocatalytic property is related to its crystal phase and the mass percentage of tungsten carbide, and its electrocatalytic activity is connected with the property of electrolyte, in which it is measured. Synergistic effect between tungsten carbide and zeolite is found during electrocatalysis.

关键词: tungsten carbide, zeolite, nanocomposite, electrocatalytic activity, synergistic effect

Abstract: Tungsten carbide and zeolite nanocomposite was prepared by combining a mechanochemical approach with a reduction and carbonization approach, using natural zeolite and ammonia metatungstate as precursors. The sample was characterized by X-ray diffraction and scanning electron microscope. The results showed that the crystal phase of the sample is composed of zeolite, monotungsten carbide and bitungsten carbide. The mass percentage and the crystallite diameter of tungsten carbide change along with the reacted time. Its electrocatalytic activity was measured with a microelectrode system with three electrodes. The results show that its electrocatalytic property is related to its crystal phase and the mass percentage of tungsten carbide, and its electrocatalytic activity is connected with the property of electrolyte, in which it is measured. Synergistic effect between tungsten carbide and zeolite is found during electrocatalysis.

Key words: tungsten carbide, zeolite, nanocomposite, electrocatalytic activity, synergistic effect

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