纳米棒
材料科学
纳米复合材料
检出限
硫化铜
电极
电化学
化学工程
锌
氧化锡
纳米结构
锡
纳米颗粒
电化学气体传感器
铜
选择性
纳米花
纳米技术
氧化物
催化作用
冶金
化学
色谱法
生物化学
物理化学
工程类
作者
Thangavelu Kokulnathan,Ramakrishnan Vishnuraj,Tzyy‐Jiann Wang,Biji Pullithadathil,Murali Rangarajan,Faheem Ahmed,Thamraa Alshahrani
标识
DOI:10.1016/j.cej.2023.147747
摘要
Developing efficient electrode materials for detecting 4-nitrochlorobenzene (4-NCB) is highly desirable for living organisms and environmental safety. Herein, we designed a hierarchical 1D-2D nanostructure of zinc oxide nanorods@copper tin sulfide nanoflowers (ZnO-NRs@CTS-NFs) by a facile hydrothermal synthesis route for electrochemical detection of 4-NCB. The ZnO-NRs@CTS-NFs modified glassy carbon electrode (GCE) exhibits excellent electrocatalytic performance for 4-NCB, much higher than that of bare GCE, ZnO-NRs/GCE, and CTS-NFs/GCE. Such a desirable electrocatalytic performance is attributed to the large surface area, rich active sites, fast electron transfer through local pn junctions of CTS NFs on ZnO NRs, and the synergistic effect of the as-prepared ZnO-NRs@CTS-NFs nanocomposite. Under optimum conditions, the fabricated ZnO-NRs@CTS-NFs/GCE provides a trace-level detection limit with a wide detection range and high sensitivity. Besides, the fabricated electrochemical sensor displays good selectivity and reproducibility for 4-NCB detection. The practical application of the ZnO-NRs@CTS-NFs modified GCE exhibits satisfactory results in determining 4-NCB in river water, pond water, and industrial wastewater. These results demonstrate that the as-prepared ZnO-NRs@CTS-NFs nanostructures might be one of the most promising electrode materials for 4-NCB detection.
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