Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
Department of Materials, Imperial College London, London SW7, 2AZ, United Kingdom.
Ultrason Sonochem. 2020 Nov;68:105071. doi: 10.1016/j.ultsonch.2020.105071. Epub 2020 Apr 6.
Nanoball-structured ferromagnetic zinc ferrite nanocrystals (ZnFeO NPs) entrapped with graphitic-carbon nitride (g-CN) was produced via straightforward and facile sonochemical synthetical technique (titanium probe; 100 W/cm and 50 KHz). The morphological (SEM), elemental (EDS), diffraction (XRD), XPS, and electrochemical studies (CV) have been carry out to verify the nanostructure and shape of the materials. The ZnFeO NPs/g-CN electrode (GCE) was constructed which displayed outstanding electrochemical ability towards toxic 4-nitrophenol (NTP). A sensitive, selective, reproducible, and durable electrochemical NTP sensor was developed by ZnFeO NPs/g-CN modified electrode. The modified sensor exhibited a high sensitivity and 4.17 nanomolars of LOD. It's greater than the LOD of previously reported NTP modified sensors. The real-time experiments of the modified electrochemical (ZnFeO NPs/g-CN electrode) sensor were successfully explained in various water (river and drinking) samples and its showed high standard recoveries. Therefore, sonochemical synthetical method and fabrication of modified electrode were developed this work based on environmental analysis of NTP sensor.
纳米球结构的铁酸锌纳米晶（ZnFeO NPs）被包裹在石墨相氮化碳（g-CN）中，是通过简单易行的超声化学合成技术（钛探针；100 W/cm 和 50 KHz）制备的。对材料的形貌（SEM）、元素（EDS）、衍射（XRD）、X 射线光电子能谱（XPS）和电化学研究（CV）进行了测试，以验证纳米结构和形状。构建了 ZnFeO NPs/g-CN 电极（GCE），该电极对有毒的 4-硝基苯酚（NTP）表现出出色的电化学能力。通过 ZnFeO NPs/g-CN 修饰电极开发了一种灵敏、选择性、重现性和耐用的电化学 NTP 传感器。修饰后的传感器具有高灵敏度和 4.17 纳摩尔的检测限。它高于以前报道的 NTP 修饰传感器的检测限。对修饰后的电化学（ZnFeO NPs/g-CN 电极）传感器在各种水（河水和饮用水）样品中的实时实验进行了成功解释，其显示出高的标准回收率。因此，本工作基于 NTP 传感器的环境分析，开发了超声化学合成方法和修饰电极的制备。
