Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, ROC, Taiwan.
Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishiku, Fukuoka, 819-0395, Japan.
Chemosphere. 2022 Mar;291(Pt 3):132977. doi: 10.1016/j.chemosphere.2021.132977. Epub 2021 Nov 18.
Pharmaceutical wastes, acetaminophen (AP) widely used in medical fields, is often discharged into water, causing harm to human health. Hence, there is an urgent need to effectively remove AP from wastewater systems. In this paper, polypyrrole (PPy) composite with MoO has been synthesized via an in-situ polymerization method. The as-prepared materials were thoroughly characterized by XRD, FT-IR, UV-DRS, SEM, TEM and mapping techniques. The as-prepared MoO@PPy composite was utilized to removal of AP via photocatalytic degradation and electrochemical determination. Under optimized composite, MoO@PPy (2) showed an excellent photocatalytic degradation and electrochemical determination of AP compared to pure MoO and all other composites. The higher catalytic activity was ascribed to the effective interfacial charges transfer, reduce the recombination and enhance the active surface area of electrode via a synergistic effect. The photocatalytic degradation mechanism, rate and kinetic of the reaction were investigated and discussed. The major active degradation species and an effective charge transfer properties were confirmed by trapping experiments and photocurrent spectra. In addition, the MoO@PPy (2) modified GCE exhibit the AP determination activity by DPV with a linear range of 0.05-546 μM. The limit of detection and sensitivity of electrode were 0.0007 μM and 0.242 μM cm respectively. Moreover, the proposed electrode showed good selectivity, stability and reproducibility. This method was useful for the determination of AP in real samples.
药物废物，广泛用于医疗领域的扑热息痛（AP），经常被排放到水中，对人类健康造成危害。因此，迫切需要从废水处理系统中有效地去除 AP。本文通过原位聚合方法合成了具有 MoO 的聚吡咯（PPy）复合材料。通过 XRD、FT-IR、UV-DRS、SEM、TEM 和映射技术对所制备的材料进行了彻底的表征。将制备的 MoO@PPy 复合材料用于通过光催化降解和电化学测定来去除 AP。在优化的复合材料中，MoO@PPy（2）与纯 MoO 和所有其他复合材料相比，表现出优异的光催化降解和电化学测定 AP 的性能。更高的催化活性归因于有效的界面电荷转移，通过协同作用减少复合和增强电极的活性表面积。研究并讨论了光催化降解机制、反应速率和动力学。通过捕获实验和光电流谱证实了主要的活性降解物质和有效的电荷转移特性。此外，MoO@PPy（2）修饰的 GCE 通过 DPV 显示出对 AP 的测定活性，线性范围为 0.05-546 μM。电极的检测限和灵敏度分别为 0.0007 μM 和 0.242 μM·cm。此外，所提出的电极表现出良好的选择性、稳定性和重现性。该方法可用于测定实际样品中的 AP。
