Study of acetylsalicylic acid electroreduction behavior at platinum electrode

作者：Chrzescijanska Ewa^*; Wudarska Edyta; Kusmierek Elzbieta; Rynkowski Jacek

来源：Journal of Electroanalytical Chemistry, 2014, 713: 17-21.

DOI：10.1016/j.jelechem.2013.11.015

• Acetylsalicylic acid
• Cyclic voltammetry
• Platinum electrode
• Electroreduction

Electroreduction behavior of acetylsalicylic acid (ASA) was investigated at platinum electrode using the cyclic voltammetry method. An effect of scan rate, ASA concentration and pH on electrode reaction was determined. The process is diffusion-controlled. Parameters of ASA electroreduction, i.e., rate constant, charge transfer coefficient and diffusion coefficient, were calculated. The ASA electroreduction is quasi-reversible and proceeds in two steps. This process is preceded by substrate hydrolysis resulting in the formation of salicylic (SA) and acetic (AA) acid. Hydrolysis products are electrochemically reduced. In the first and second step, electroreduction of SA and AA proceeds, respectively. Possible mechanism of ASA electroreduction was proposed.

• 出版日期2014-1-15