多菌灵
微分脉冲伏安法
纳米复合材料
表面改性
材料科学
循环伏安法
纳米颗粒
赤铁矿
杀菌剂
化学
纳米技术
电化学
冶金
植物
电极
物理化学
生物
作者
Neethu Sebastian,Wan-Chin Yu,Deepak Balram,Fahad S. Al-Mubaddel,Muhammad Zaeem Noman
标识
DOI:10.1016/j.apsusc.2022.152666
摘要
Fungicides are widely used across the globe in agricultural sector and their ubiquitous presence is a serious concern to ecology due to their hazardous nature. Hence, we report sensitive detection and degradation of the toxic fungicide carbendazim based on a novel dual-functional nanocomposite that consists of carbon nanofibers (CNFs), β-cyclodextrin (β-CD), and hematite (α-Fe2O3) nanoparticles. The surface functionalization of CNFs with the natural polymer β-CD and the subsequent decoration with α-Fe2O3 nanoparticles through a sonochemical method were detailed. Exceptional surface-controlled electrocatalytic activity has been achieved towards the detection of carbendazim, and we have confirmed this based on cyclic voltammetry and differential pulse voltammetry techniques. Furthermore, the excellent photocatalytic activity of the prepared nanocomposite towards carbendazim was verified by evaluating the degradation rate. Apart from very low limit of detection (LOD) of 1 nM and excellent sensitivity of 37.69 μA μM−1 cm−2, outstanding anti-interference property, stability, reproducibility, and repeatability were also exhibited by the developed carbendazim sensor. Moreover, we detected carbendazim in real samples including apple, orange, tomato, and river water to evince excellent practical feasibility of the developed sensor.
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