In the present study, SnO₂ nanoparticles were successfully synthesized by chemical precipitation method using anhydrous aspartic acid and surfactant at two annealing temperatures, 300 °C and 600 °C. The effect of surfactants cationic CTAB and anionic SDS on the synthesized SnO₂ nanoparticles (NPs) were studied elaborately. In this article, for the first time, SnO₂ NPs were employed as an excellent photocatalyst in the degradation of carbamazepine (CBZ), a popular antiepileptic drug which is most commonly detected pharmaceutically active compounds (PhACs) in municipal wastewater under UV-C light irradiation. Comparative studies between the photocatalytic activity of SnO₂ NPs synthesized with CTAB (SC1) and SDS (SS1) on the degradation of the CBZ drug were investigated. Parameters like the effect of catalytic loading, initial concentration, pH and contact time were also studied for optimization. The results indicate that SC1 is a better photocatalyst with rate constant 6.66 × 10⁻² min⁻¹ than SS1with rate 5.7 × 10⁻² min⁻¹. To determine the transformation product formed on the photodegradation LCMS (ESI) analysis was done. The synthesized SnO₂ NPs can be recycled up to 8th cycles without any notable alteration in its photocatalytic activity.

在本研究中，使用无水天冬氨酸和表面活性剂在300℃和600℃这两个退火温度下通过化学沉淀法成功合成了SnO ₂纳米粒子。详细研究了表面活性剂阳离子CTAB和阴离子SDS对合成的SnO ₂纳米颗粒（NPs）的影响。本文首次将SnO ₂ NPs用作降解卡马西平（CBZ）的优异光催化剂，卡马西平是一种流行的抗癫痫药，是市政污水在UV-C光下最常检测到的药物活性化合物（PhACs）辐射。SnO ₂光催化活性的比较研究研究了用CTAB（SC1）和SDS（SS1）合成的NPs对CBZ药物的降解。还对诸如催化负载，初始浓度，pH和接触时间的影响等参数进行了优化。结果表明，SC1是一种更好的光催化剂，其速率常数为6.66×10 ^-2  min ^-1，比SS1具有5.7×10 ^-2  min ^-1的速率。为了确定在光降解上形成的转化产物，进行了LCMS（ESI）分析。合成的SnO ₂ NPs可以循环使用第8个循环，而其光催化活性没有任何明显的变化。