Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05508-000, São Paulo-SP, Brazil.
Instituto de Química, Universidade Federal de Uberlândia, 38408-100, Uberla^ndia, MG, Brazil.
Anal Chim Acta. 2022 Nov 15;1233:340362. doi: 10.1016/j.aca.2022.340362. Epub 2022 Sep 8.
The history of ferrites comes from many centuries and was fundamental in many fields. Initially, ferrites were extracted directly from nature, but in the last century, scientists learned to produce ferrites with different properties that gave origin to many advances in industrial and instrumental applications. More recently, the designed preparation of ferrites with nanometric size revealed remarkable characteristics. In the last years, different spinel ferrites were used as electroactive layers to build high-performance modified electrodes. In this review, it is presented a critical overview of the utilization of spinel ferrites (with a general formula MFeO where M = Mg, Ni, Co, Cu, Mn and Zn) to create differentiated voltammetric sensors. The association of these materials with graphene, glassy carbon, carbon nitride, ionic liquids, nanoparticles of noble metals, oxides of transition metals and other materials can produce notable synergic responses towards electrochemical activity. Some of these sensors can produce very sensitive signals and ample concentration ranges for compounds such hydrogen peroxide, glucose and bisphenol A, and present potential for many other applications. Along this review, all these aspects will be discussed and the main results are organized in tables, using as a base the metal associated with the ferrite.
铁氧体的历史可以追溯到几个世纪以前，在许多领域都发挥了重要作用。最初，铁氧体是直接从自然界中提取的，但在上个世纪，科学家们学会了生产具有不同特性的铁氧体，这为工业和仪器应用带来了许多进步。最近，纳米级铁氧体的设计制备显示出了显著的特性。在过去的几年中，不同的尖晶石铁氧体被用作电活性层，以构建高性能修饰电极。在这篇综述中，介绍了尖晶石铁氧体（通式为 MFeO，其中 M = Mg、Ni、Co、Cu、Mn 和 Zn）在构建差异化伏安传感器方面的应用。这些材料与石墨烯、玻碳、碳氮化物、离子液体、贵金属纳米粒子、过渡金属氧化物和其他材料的结合，可以对电化学活性产生显著的协同响应。其中一些传感器可以对过氧化氢、葡萄糖和双酚 A 等化合物产生非常灵敏的信号和广泛的浓度范围，并且具有许多其他应用的潜力。在这篇综述中，将讨论所有这些方面，并使用与铁氧体相关的金属作为基础，将主要结果组织在表格中。
