Nepfumbada Collen, Woodley Christopher P, Mamba Bhekie B, Bartlett Bart M, Feleni Usisipho
College of Science, Engineering and Technology (CSET), University of South Africa (UNISA), Institute for nanotechnology and water sustainability (iNanoWS), Florida campus, Johannesburg, 1709, South Africa.
Department of Chemistry, University of Michigan, Ann Arbor, Michigan, 48109-1055, United States.
ChemistryOpen. 2025 Jun 26:e2500246. doi: 10.1002/open.202500246.
Metal oxide-based electrocatalysts have become increasingly popular in the electrochemical field due to their outstanding electrocatalytic properties. Herein, a hydrothermal approach is used to synthesize the composite of ytterbium zinc oxide endorsed on 2D hexagonal boron nitride (YbZnO@h-BN). Different analytical methods, including Fourier transform infrared (FTIR), Raman spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD), along with X-ray photoelectron spectroscopy (XPS), are used to interrogate the morphological and structural characteristics of the nanocomposite. FTIR analysis reveals Zn-O and Yb-O functionality, while SEM images shows the YbZnO@h-BN microspherical structure. Cyclic voltammetry (CV) and square-wave voltammetry (SWV) techniques are employed for the electrochemical analysis of Ciprofloxacin (CIP) on the YbZnO@h-BN/glassy carbon electrode (GCE)-modified electrode. The YbZnO@h-BN/GCE sensor demonstrates a broad linear range (0.05 μM to 100 μM) with a lower limit of detection (0.059 μM) and high sensitivity of 7.4441 μA μM cm under optimal conditions. Additionally, the sensor shows good responsiveness for CIP, along with notable reproducibility, stability, and selectivity. Furthermore, the genuine real wastewater sample and commercial CIP tablet are utilized to investigate the usefulness of the proposed YbZnO@h-BN/GCE sensor for CIP detection in real practice, revealing satisfactory recovery values of 94 to 105% and 95 to 112%, respectively.
基于金属氧化物的电催化剂因其出色的电催化性能在电化学领域越来越受欢迎。在此，采用水热法合成了负载在二维六方氮化硼（YbZnO@h-BN）上的镱锌氧化物复合材料。使用了不同的分析方法，包括傅里叶变换红外光谱（FTIR）、拉曼光谱、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）和X射线衍射（XRD），以及X射线光电子能谱（XPS），来研究纳米复合材料的形态和结构特征。FTIR分析揭示了Zn-O和Yb-O官能团，而SEM图像显示了YbZnO@h-BN的微球形结构。采用循环伏安法（CV）和方波伏安法（SWV）技术对YbZnO@h-BN/玻碳电极（GCE）修饰电极上的环丙沙星（CIP）进行电化学分析。YbZnO@h-BN/GCE传感器在最佳条件下显示出宽线性范围（0.05 μM至100 μM），检测下限为0.059 μM，灵敏度高达7.4441 μA μM cm。此外，该传感器对CIP具有良好的响应性，以及显著的重现性、稳定性和选择性。此外，还利用实际的真实废水样品和市售CIP片剂来研究所提出的YbZnO@h-BN/GCE传感器在实际CIP检测中的实用性，结果分别显示出令人满意的回收率，分别为94%至105%和95%至112%。
