Advanced Materials and Devices Laboratory (AMDL), Department of Nanoscience and Technology, Bharathiar University, Coimbatore, Tamil Nadu, 641 046, India.
Department of Materials Engineering, Ming Chi University of Technology, Taishan District, New Taipei City, 24301, Taiwan.
Mikrochim Acta. 2024 Jul 10;191(8):460. doi: 10.1007/s00604-024-06511-0.
The facile sonochemical synthesis is reported of zinc cobalt oxide (ZnCoO) composited with carbon nanofiber (CNF). Structural, chemical, and morphological were characterized by X-ray diffraction (XRD), X-ray photoluminescent spectroscopy (XPS), field emission scanning electron microscopy (FESEM), and transmittance electron microscopy (TEM), respectively. ZnCoO/CNF-modified GCE was applied to the detection of bisphenol A (BPA). The modified GCE shows enhanced sensing performance towards BPA, which includes a linear range (0.2 to 120 μM L) alongside a low limit of detection (38.2 nM L), low interference, and good stability. Detection of lower concentrations of BPA enables real sample analysis in the food industries (milk, orange juice, yogurt, tap water, and baby feeding bottles). Surprisingly, the BPA was detected in milk 510 nM L, orange juice 340 nM L, yogurt 1050 nM L, and tap water 140 nM L. Moreover, an interaction mechanism between the BPA analyte and ZnCoO was discussed.
本文报道了一种简便的声化学合成方法，用于制备锌钴氧化物（ZnCoO）与碳纳米纤维（CNF）的复合材料。通过 X 射线衍射（XRD）、X 射线光电子能谱（XPS）、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）分别对其结构、化学和形态进行了表征。将 ZnCoO/CNF 修饰的 GCE 应用于双酚 A（BPA）的检测。修饰后的 GCE 对 BPA 表现出增强的传感性能，包括线性范围（0.2 至 120 μM L）和低检测限（38.2 nM L）、低干扰和良好的稳定性。对低浓度 BPA 的检测可实现食品工业（牛奶、橙汁、酸奶、自来水和婴儿奶瓶）中实际样品的分析。令人惊讶的是，在牛奶中检测到 BPA 的浓度为 510 nM L，橙汁中为 340 nM L，酸奶中为 1050 nM L，自来水中为 140 nM L。此外，还讨论了 BPA 分析物与 ZnCoO 之间的相互作用机制。
