Experimental methods and characterization of metalated Py-POPs enriched with Fe3O4 nanoparticles and the electrochemical detection of 2-phenylphenol in water using cyclic voltammograms.

This work aims to synthesize and characterize FePy-POP, ZnPy-POP, Fe3O4@ZnPyPOP, and Fe3O4@FePy-POP. The compounds were characterized using various methods. X-ray diffraction (XRD) analysis was conducted using a Bruker D2 PHASER-e diffractometer using Cu-Kα radiation (0.15418 nm). Scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDX) were carried out on a crossbeam 540 FEG SEM microscope from Zeiss. Transmission electron microscopy (TEM) images were observed using a JOEL JEM 2100F. UV-Vis absorption measurements were taken on a CARY 100 BIO UV-Vis spectrophotometer. FTIR spectroscopy was carried out using Brunker Alpha Fourier transform spectroscopy with platinum attenuated total reflectance (ATR) sampling accessory. These compounds were used as catalysts on a modified glassy carbon electrode (GCE) to enhance electrochemical detection of 2- phenylphenol in water and real samples. An Autolab potentiostat was used to carry out the electrochemical experiments. A three-electrode setup was employed to collect cyclic voltammetry data. The working electrode was a glassy carbon electrode and was polished with a slurry of alumina on a Buehler felt pad and rinsed with millipore water. The counter electrode was a platinum wire, while the reference electrode was a Ag/AgCl wire.

本研究旨在合成与表征FePy-POP、ZnPy-POP、Fe3O4@ZnPyPOP和Fe3O4@FePy-POP等化合物。通过多种技术手段对这些化合物进行了详细分析。采用Bruker D2 PHASER-e衍射仪，利用Cu-Kα辐射（波长为0.15418 nm）进行了X射线衍射（XRD）分析。在Zeiss公司生产的crossbeam 540 FEG扫描电子显微镜上进行了扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）分析。利用JOEL JEM 2100F透射电子显微镜观察了透射电子显微镜（TEM）图像。在CARY 100 BIO紫外-可见分光光度计上进行了紫外-可见吸收光谱测量。采用Bruker Alpha傅里叶变换红外光谱仪，配合铂衰减全反射（ATR）采样附件进行了傅里叶变换红外光谱（FTIR）分析。这些化合物被用作改进型玻璃碳电极（GCE）上的催化剂，以增强水中及实际样品中2-苯基苯酚的电化学检测。使用Autolab电化学工作站进行了电化学实验，并采用三电极系统收集循环伏安数据。工作电极为玻璃碳电极，经氧化铝浆料在Buehler绒毡垫上抛光，并用密理尔水冲洗。对电极采用铂丝，而参比电极为Ag/AgCl电极。