Abstract
The electrochemical degradation of chitosan using Ti/Sb–SnO2 electrode was studied in this work. The experimental results showed that as a non-active electrode with high oxygen potential, Ti/Sb–SnO2 electrode had a good efficiency for degrading chitosan. The kinetic behavior of electrochemical degradation of chitosan using Ti/Sb–SnO2 electrode and the function relationship between experimental parameters and degradation rate constant were also investigated. The kinetic analysis revealed that this electrochemical process using Ti/Sb–SnO2 electrode obeyed the zeroth–order reaction kinetics under the experimental conditions examined. The degradation rate constant at Ti/Sb–SnO2 electrode had the linear relationship with 1.13 power of current density, −1.36 power of initial concentration of chitosan and 0.19 power of concentration of acetic acid, The temperature dependences of the degradation rate constant could be expressed by the Arrhenius equation. The concentration of sodium acetate had a negligible influence on the degradation rate constant.
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