Electrocatalytic Activity of Tungsten Carbide and Natural Zeolite Composite in Aqueous Solution

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 sho...

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Published inChinese journal of chemical engineering Vol. 20; no. 2; pp. 254 - 261
Main Author 程媛 谢伟淼 姚国新 胡素绢 李国华
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2012
Subjects
Carbides
Crystals
Electrocatalysis
electrocatalytic activity
Electrodes
nanocomposite
Nanostructure
Scanning electron microscopy
synergistic effect
Tungsten carbide
zeolite
Zeolites
力化学方法
天然沸石
扫描电子显微镜
水溶液
电催化活性
电极系统
碳化钨
纳米复合材料
nanocomposite
zeolite
electrocatalytic activity
tungsten carbide
synergistic effect
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ISSN1004-9541
2210-321X
DOI10.1016/S1004-9541(12)60386-3

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Summary: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.
Bibliography:CHENG Yuan , XIE Weimiao , YAO Guoxin , HU Sujuan , LI Guohua （ 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, Zhejia-ng University of Technology, Hangzhou 310032, China）
tungsten carbide, zeolite, nanocomposite, electrocatalytic activity, synergistic effect
11-3270/TQ
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.
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ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(12)60386-3