检出限
介电谱
微分脉冲伏安法
材料科学
循环伏安法
碳纳米纤维
电化学气体传感器
核化学
电化学
分析化学(期刊)
纳米技术
化学
电极
色谱法
碳纳米管
物理化学
作者
Nandini Nataraj,Shen‐Ming Chen
标识
DOI:10.1016/j.colsurfa.2021.126385
摘要
We have explored an electrochemical sensing platform based on samarium vanadate nanosphere embedded carbon nanofiber (SmVO4/CNF) for the determination of antituberculosis drug isoniazid (ISZ). The physicochemical properties were recognized, proving the well-aligned presence of SmVO4/CNF. The samples obtained were tested for electrochemical studies as electrochemical impedance spectroscopy (EIS), determining the lower resistance resulting in higher conductivity with Rct at 53 Ω. Prospective enhancement was observed for SmVO4/CNF/GCE with cyclic voltammetry (CV) and differential pulse voltammetry (DPV) towards isoniazid electrochemical detection. The effective active surface area was calculated to be 0.155 cm−2 for SmVO4/CNF/GCE being two times larger than bare GCE with CV analysis. A lower detection limit of about 0.005 μM and a limit of quantification of about 0.0198 μM were significantly recognized with the linear range of about 0.09−800 μM as obtained by DPV analysis. Coexisting materials with ISZ had no interactions establishing excellent selectivity among interfering molecules. Biological and pharmaceutical samples exposed for real-time studies with an effective recovery range. Thus, collecting all these results will be a useful sensor being fabricated with SmVO4/CNF for synergetic detection of ISZ in real samples.
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