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Robust and selective electrochemical detection of antibiotic residues: The case of integrated lutetium vanadate/graphene sheets architectures.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2019-09-24 , DOI: 10.1016/j.jhazmat.2019.121304
Thangavelu Kokulnathan,Shen-Ming Chen

Lutetium vanadate (LuVO4) is a promising material for electrochemical application owing to its good conductivity and electrocatalytic activity. Herein, we demonstrate a facile technique for the synthesis of a LuVO4/ graphene sheet (GRS) nanocomposite where LuVO4 is encapsulated with an ultrathin GRS to form a hierarchical structure (LuVO4/GRS). The resulting hierarchical LuVO4/GRS architecture was characterized by several analytical and spectroscopic techniques. The resultant electrocatalyst shows superior electrochemical sensing for nitrofurantoin (NFT) with a low detection limit (0.001 μM), wide linear range (0.008-256.0 μM) and excellent sensitivity (1.709 μA μM-1 cm-2). It has been demonstrated that the enhanced electrocatalytic performance of LuVO4/GRS nanocomposite is due to their excellent electrical conductivity, suitable surface area, high redox reaction and large number of electron transport. In addition, the LuVO4/GRS nanocomposite exhibited excellent response towards NFT detection with adequate reproducibility, good repeatability, long-term stability and excellent selectivity over its structural analogs and common interferents. Furthermore, the practical applicability of the proposed electrochemical sensor was successfully applied for determination of NFT in environmental samples with satisfactory results. The LuVO4/GRS nanocomposite presented here can serve as a favorable candidate for developing electrochemical sensor and plays an important role in widespread fields.

中文翻译:

抗生素残留物的鲁棒性和选择性电化学检测:钒酸//石墨烯片集成体系结构的情况。

钒酸镧(LuVO4)由于其良好的电导率和电催化活性,是一种有希望用于电化学应用的材料。在这里,我们演示了一种简便的合成LuVO4 /石墨烯片(GRS)纳米复合材料的技术,其中LuVO4用超薄GRS封装以形成分层结构(LuVO4 / GRS)。最终的LuVO4 / GRS分层体系结构通过几种分析和光谱技术进行了表征。所得的电催化剂显示出对呋喃妥因(NFT)的出色电化学感应,检测限低(0.001μM),线性范围宽(0.008-256.0μM),灵敏度极佳(1.709μAμM-1cm-2)。已经证明,LuVO4 / GRS纳米复合材料的电催化性能增强是由于其优异的电导率,合​​适的表面积,高氧化还原反应和大量电子传输。此外,LuVO4 / GRS纳米复合材料相对于其结构类似物和常见干扰物,对NFT检测表现出出色的响应性,具有足够的重现性,良好的重复性,长期稳定性和出色的选择性。此外,所提出的电化学传感器的实际适用性已成功应用于环境样品中NFT的测定,结果令人满意。本文介绍的LuVO4 / GRS纳米复合材料可作为开发电化学传感器的良好候选者,并在广泛的领域中发挥重要作用。与其结构类似物和常见干扰物相比,具有长期稳定性和出色的选择性。此外,所提出的电化学传感器的实际适用性已成功应用于环境样品中NFT的测定,结果令人满意。本文介绍的LuVO4 / GRS纳米复合材料可作为开发电化学传感器的良好候选者,并在广泛的领域中发挥重要作用。与其结构类似物和常见干扰物相比,具有长期稳定性和出色的选择性。此外,所提出的电化学传感器的实际适用性已成功应用于环境样品中NFT的测定,结果令人满意。本文介绍的LuVO4 / GRS纳米复合材料可作为开发电化学传感器的良好候选者,并在广泛的领域中发挥重要作用。
更新日期:2019-09-25
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