| 초록 |
Recently, research on the oxidation behavior of Ti3C2Tx has attracted attention due to vulnerable ambient stability. However, a more detailed study is necessary for a deeper understanding of the oxidation reaction in various conditions. Herein, we report on the effects of pH and temperature on the oxidation kinetics of Ti3C2Tx aqueous suspension by means of UV-vis spectroscopy. The oxidation rate is faster in acidic pH and high temperature conditions, and it follows the Arrhenius equation. Based on experiments and previous works, we suggest that alkaline metal cation interrupt the Ti3C2Tx oxidation with slow rate constants. To support this, we propose the mechanism that explains the oxidation rate in terms of electron localization on titanium atoms based on our kinetics results and previous works. Furthermore, a comprehensive chemical equation of the oxidation of aqueous Ti3C2Tx suspension is provided based upon the identification of gas species during the oxidation process. |
