Cyclic Voltammetry Characterization of Microparticle Monolayers

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• 作者：Magdalena Nosek ; ^{ncnosek@cyf-kr.edu.pl" class="auth_mail} ; Piotr Batys ; Micha艂 Skoczek ; Pawe艂 Wero艅ski
• 关键词：Rotating disk electrode ; Cyclic voltammetry ; Limiting diffusion current ; Colloidal particle monolayer ; Thin porous film
• 刊名：Electrochimica Acta
• 出版年：1 July 2014
• 年：2014
• 卷：133
• 期：Complete
• 页码：241-246
• 全文大小：1602 K

文摘

We have demonstrated the applicability of cyclic voltammetry and rotating disk electrode techniques for the characterization of microparticle monolayers. We have tested experimentally the recently developed theoretical model for the determination of surface coverage of spherical particle monolayer by means of diffusion current measurements. We have verified our electrochemical results by means of optical microscopy. We have found that the model applicability range increases with the decrease of the adsorbed particle size. For the 1.16 渭m particles we have found a good agreement between our theoretical and experimental results at the surface coverage larger than 0.45. Our results suggest that the voltammetric characterization of thin porous films may have practical applications for, e.g., detection and determination of surface coverage of bacteria, cells or other objects in the micron size range.