The present research involves the report on electrochemical deportment of Carbendazim (MBC) at multiwalled carbon nanotubes and calcium‐doped zinc oxide nanoparticles altered nanocomposite based carbon paste electrode (MWCNTs/Ca‐ZnO‐CPE). The modified carbon paste evidenced manifest electrocatalytic behavior for MBC in 0.2 M phosphate buffer (PB) solutions. Cyclic voltammetry (CV), linear sweep voltammetry (LSV), and square wave voltammetry (SWV) techniques were used for the analysis. The working electrode assembly exhibits faster electron transfer of MBC with increase in the peak current. At bare CPE, MBC showed maximum peak current of 1.098 μA at potential 0.7568 V whereas at MWCNT/Ca‐ZnO/CPE peak current of 5.203 μA was observed at potential 0.7541 V in 0.2 M PBS of pH 7.0 at the sweep rate of 50 mV s⁻¹. The synthesized 5 % Ca‐ZnO nanoparticles (NPs) were characterized by X‐ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X‐ray analysis (EDX), and Transmission electron microscopy (TEM) analysis. Various factors influencing the voltammetry of MBC such as pre‐concentration time, pH, sweep rate, and amount of MBC were studied and from the studies we observed that the response was found to be diffusion‐controlled. The concentration variation studies for MBC was watched in the linear working range of 0.01 μM to 0.45 μM and the detection limit was found by SWV technique.

中文翻译：

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MWCNT / Ca-ZnO修饰电极对多菌灵的电分析

本研究涉及多菌灵（MBC）在多壁碳纳米管和钙掺杂的氧化锌纳米颗粒改变的纳米复合碳糊电极（MWCNTs / Ca-ZnO-CPE）上的电化学行为的报告。改性的碳糊证明了MBC在0.2 M磷酸盐缓冲液（PB）溶液中的电催化行为。分析使用了循环伏安法（CV），线性扫描伏安法（LSV）和方波伏安法（SWV）技术。随着峰值电流的增加，工作电极组件表现出更快的MBC电子转移。在裸露的CPE上，MBC在0.7568 V的电势下显示最大峰值电流为1.098μA，而在MWCNT / Ca-ZnO / CPE的0.2M PBS，pH 7.0的50 mV的电势为0.7541 V的条件下，峰值电流为5.203μA。 s ^-1。通过X射线衍射（XRD），扫描电子显微镜（SEM），能量色散X射线分析（EDX）和透射电子显微镜（TEM）分析对合成的5％Ca-ZnO纳米颗粒（NPs）进行表征。研究了影响MBC伏安法的各种因素，例如预浓缩时间，pH，吹扫速率和MBC量，从这些研究中我们观察到响应被控制为扩散。在0.01μM至0.45μM的线性工作范围内观察MBC的浓度变化研究，并通过SWV技术确定了检测限。