纳米片
碳纳米管
钨酸盐
材料科学
复合材料
磺胺嘧啶
纳米管
化学工程
纳米技术
化学
冶金
生物化学
工程类
抗生素
作者
Santhiyagu Sahayaraj Rex Shanlee,Sundaresan Ruspika,Shen‐Ming Chen,Ramachandran Balaji,Ying‐Chih Liao,Narendhar Chandrasekar
标识
DOI:10.1016/j.cej.2024.152179
摘要
Multi-walled Carbon Nanotube Wrapped Rare earth Tungstate Nanosheet Composites are developed for the ultrasensitive and selective electrochemical detection of sulfa drug, sulfadiazine (SAN) as they exhibit high levels of toxicity towards public health and ecosystem. Here, we synthesized Gadolinium tungstate decorated with multi-walled carbon nanotubes (Gd2WO6/MWCNT) though hydrothermal processing and characterized by XRD, SEM, EDX, TEM, and EIS measurement to investigate the phase purity, morphology, and interfacial property. Gd2WO6 is a double perovskite that has high oxygen surface exchange kinetics and the MWCNT possesses high catalytic capability and a larger surface area contributes to the efficient sensing ability. The Gd2WO6/MWCNT possessed a great electrical conductivity owing to the synergism between the Gd2WO6 and MWCNT. The synergistic effect increases the surface area and ionic and electrical conductivity which increases the current response of SAN. Under optimum conditions, the Gd2WO6/MWCNT/GCE displays a broad linear of 0.01 – 671 µM and a LOD level of 2 nM (S/N ratio: 3) with a sensitivity of 0.371 µA µM cm-1. The analytical applicability of the proposed electrode modifier leads to a promising sensor for SAN detection in human urine and water samples with appreciable results.
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