In this work, a novel electrochemiluminescent (ECL) pesticide sensor based on zinc oxide nanocrystals decorated nickel foam is proposed for determination of imidacloprid for the first time. The silica film was used as a morphology‐controlling factor for modification of the electrode with zinc oxide nanocrystals. Zinc oxide was selected as luminescent material due to its cheapness, non‐toxicity, high thermal stability and excellent luminescence properties which truly adhered on the surface of nickel foam. The K₂S₂O₈ was used as strong co‐reactant for this purpose. The silica template plays an important role in controlling the size of ZnO nanocrystals. The Physical morphology of the ZnO/Ni‐foam electrode was performed by electrochemical impedance spectroscopy, Brunauer‐Emmett‐Teller (BET), X‐Ray diffraction analysis, field emission scanning electron microscopy, and energy‐dispersive X‐ray analysis. The ultra‐sensitive electrochemiluminescence method was successfully used for ultra‐trace determination of imidacloprid. The linear dynamic range and low detection limit were obtained 3×10⁻¹⁴ −8×10⁻⁸ M and 4.4×10⁻¹⁵ M, respectively. Also, the relative standard deviation for 15 repetitive optical signals was calculated 1.09 %.The present ECL sensor exhibited superior performance toward the accurate determination of imidacloprid with good reproducibility and stability.

中文翻译：

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基于ZnO纳米晶锚镍泡沫的高灵敏化学发光杀虫剂测定实际样品中的吡虫啉。

在这项工作中，首次提出了一种基于氧化锌纳米晶体修饰的镍泡沫的新型电化学发光（ECL）农药传感器，用于吡虫啉的测定。二氧化硅膜被用作形态控制因子，用于用氧化锌纳米晶体修饰电极。氧化锌因其价格便宜，无毒，高热稳定性和出色的发光性能而被选择作为发光材料，这些材料确实附着在泡沫镍表面。K ₂ S ₂ O ₈为此，它被用作强共反应剂。二氧化硅模板在控制ZnO纳米晶体的尺寸中起重要作用。ZnO / Ni泡沫电极的物理形态通过电化学阻抗谱，Brunauer-Emmett-Teller（BET），X射线衍射分析，场发射扫描电子显微镜和能量分散X射线分析进行。超灵敏的化学发光方法已成功用于吡虫啉的超痕量测定。线性动态范围和低检测限获得了3×10 ^-14 -8×10 ^-8  M和4.4×10 ^-15 M分别。另外，计算出15个重复光信号的相对标准偏差为1.09％。本发明的ECL传感器在准确测定吡虫啉方面表现出优异的性能，具有良好的重现性和稳定性。