Development of an efficient electrochemical sensing platform based on ter-poly(luminol-o-anisidine-o-toluidine)/ZnO/GNPs nanocomposites for the detection of antimony (Sb3+) ions

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Analytical Methods Pub Date : 2024-06-18 DOI:10.1039/D4AY00472H

Salsabeel Al-Sodies, Abdullah M. Asiri, M. M. Alam, Khalid A. Alamry, Mohammed M. Rahman and Mahmoud A. Hussein

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Abstract

A poly(luminol-o-anisidine-o-toluidine) terpolymer was synthesized, characterized, and modified with GNPs and ZnO NPs. The nanocomposites were then examined for their electroactivity and potential use as cationic electrochemical sensors for detecting Sb³⁺ ions in phosphate buffer on the surface of a glassy carbon electrode (GCE). Among the different compositions and the terpolymer, the GCE adapted with the PLAT/ZnO/GNPs-5% nanocomposite displayed the highest current response. The fabricated nanocomposite sensor exhibited high sensitivity, with a value of 21.4177 μA μM⁻¹ cm⁻², and a low detection limit of 95.42 pM. The analytical performance of the sensor was evaluated over the linear dynamic range (LDR) of 0.1 nM to 0.01 mM. The proposed sensor is effective in detecting and measuring carcinogenic Sb³⁺ ions in real environmental samples using an electrochemical approach, making it a promising tool for environmental monitoring.

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开发基于三聚（鲁米诺-邻甲氧基苯胺-邻甲苯胺）/ZnO/GNPs 纳米复合材料的高效电化学传感平台，用于检测锑（Sb3+）离子。

合成了一种聚（发光酚-邻甲氧基苯胺-邻甲苯胺）三元共聚物，对其进行了表征，并用 GNPs 和 ZnO NPs 对其进行了修饰。然后对这些纳米复合材料的电活性和用作阳离子电化学传感器的潜力进行了研究，以检测玻璃碳电极（GCE）表面磷酸盐缓冲液中的 Sb3+ 离子。在不同成分和三元共聚物中，采用 PLAT/ZnO/GNPs-5% 纳米复合材料的 GCE 显示出最高的电流响应。所制备的纳米复合材料传感器灵敏度高，为 21.4177 μA μM-1 cm-2，检测限低，为 95.42 pM。在 0.1 nM 至 0.01 mM 的线性动态范围（LDR）内对传感器的分析性能进行了评估。该传感器能利用电化学方法有效地检测和测量真实环境样品中的致癌物质 Sb3+ 离子，是一种很有前途的环境监测工具。

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