Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (6): 598-604. Previous Articles     Next Articles

Original Articles

非化学计量的混合价态氧化钼(VI, V)修饰微电极的电化学制备

王宝兴;胡刚;刘柏峰;董绍俊   

  1. 中国科学院长春应用化学研究所;中国科学院电分析化学开放研究实验室
  • 出版日期:1996-06-15 发布日期:1996-06-15

Electrochemical preparation of microelectrodes modified with non- stoichiometric mixed-valent molybdenum oxides

WANG BAOXING;HU GANG;LIU BAIFENG;DONG SHAOJUN   

  • Online:1996-06-15 Published:1996-06-15

A compact non-stoichiometric molybdenum (VI, V) oxide of blue film was grown on carbon fiber (CF) microelectrode surface by cycling the potential between +0.2V and -0.70V in a freshly prepared Na2MoO4 solution containing 5×10^-^3mol/L H2SO4. The quantity of the oxide is controlled by the charge passing the electrode. The electrochemical pretreatment of CF microelectrode not only raises the deposition velocity of molybdenum oxide on CF surface, but also improves greatly the cyclic voltammetric behavior of the molybdenum oxide film prior to the electrodeposition. The cathodic processes are believed to yield the hydrogen molybdenum oxide bronzes, HxMoO3 (0

Key words: X-RAY PHOTOELECTRON SPECTROMETRY, SCANNING ELECTRON MICROSCOPES, CHEMICAL MODIFIED ELECTRODE, MOLYBDENUM OXIDE, STOICHIOMETRY, MICROELECTRODE

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