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用研磨抛光的方法制备了 Φ0 .1mm的 Pt微盘电极 (研磨微电极 )。用这种研磨微电极研究强碱性溶液中 Bi2 O3 的循环伏安行为时 ,通过 SEM形貌分析和 Bi元素 X射线能谱分析 ,认为这种电极具有较高的稳定性。使用这种微电极对常粒 Bi2 O3 、纳米 Bi2 O3 进行了循环伏安研究 ,结果表明纳米 Bi2 O3 比常粒Bi2 O3 具有更高的电化学活性。说明研磨微电极可以较好地应用于某些粉末材料的电化学研究中。
With the method of grinding and polishing Φ0. 1mm Pt microdisk electrode (grinding microelectrode). When the cyclic voltammetry of Bi2 O3 in strong alkaline solution was studied by this kind of milled microelectrode, SEM analysis and X-ray energy spectrum analysis of Bi element showed that this kind of electrode possessed high stability. Cyclic voltammetry of the bulk Bi 2 O 3 and nanophase Bi 2 O 3 was carried out using this microelectrode. The results showed that the nanophase Bi 2 O 3 had higher electrochemical activity than the Bi 2 O 3. It shows that grinding microelectrode can be applied to the electrochemical research of some powder materials well.