The preparation of NiCo2O4 nanoboulders and their application in the electrochemical detection of ofloxacin drug

Q3 Materials Science
Nizamuddin Solangi , Jai Kumar , Gul Naz , Razium Ali Soomro
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引用次数: 2

Abstract

A sensitive electroactive platform relies directly upon the efficient and conductive interface. This work offers a simple and effective method for synthesizing NiCo2O4 using CTAB surfactant, suited for trace-level antibiotic detection. The route realized the controlled growth of tiny NiCo2O4 nanoboulders with an exposed interface. A comparative evaluation of the bimetallic nanostructures with their pristine compositional counterparts, i.e., NiO and Co3O4, supports its superior electrochemical characteristics based on the synergism of strong redox activity and conductivity from the bimetallic components. The NiCo2O4 nanoboulders exhibited strong electrochemical activity when configured as electrode material for detecting ofloxacin (OFL), a common antibiotic. The sensor exhibited excellent working linearity in a low-concentration range of 0.01–5 ​μM with a detection limit of 1 ​× ​10−3 ​μM for OFL. The kinetics of the NiCo2O4 further supported the electrocatalytic oxidation of OFL to be diffusion controlled with an estimated diffusion coefficient of 2.03310−6 ​cm2 ​s−1. Moreover, the constructed sensor is applicable for detecting OFL from environmental samples, reflecting its workability in complex real-environment.

Abstract Image

NiCo2O4纳米巨砾的制备及其在氧氟沙星药物电化学检测中的应用
灵敏的电活性平台直接依赖于高效和导电的界面。本工作提供了一种简单有效的CTAB表面活性剂合成NiCo2O4的方法,适用于微量抗生素检测。该方法实现了界面外露的NiCo2O4纳米微球的可控生长。双金属纳米结构与原始成分(NiO和Co3O4)的对比评价表明,双金属组分具有强氧化还原活性和电导率的协同作用,支持其优越的电化学特性。NiCo2O4纳米球作为检测氧氟沙星(OFL)的电极材料,表现出较强的电化学活性。该传感器在0.01 ~ 5 μM的低浓度范围内具有良好的工作线性,对OFL的检测限为1 × 10−3 μM。NiCo2O4的动力学进一步支持OFL的电催化氧化是扩散控制的,估计扩散系数为2.03310−6 cm2 s−1。此外,所构建的传感器适用于环境样品中的OFL检测,体现了其在复杂真实环境中的可操作性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
JCIS open
JCIS open Physical and Theoretical Chemistry, Colloid and Surface Chemistry, Surfaces, Coatings and Films
CiteScore
4.10
自引率
0.00%
发文量
0
审稿时长
36 days
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