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Electrochemical Detection of Tetracycline on Highly Sensitive Benzene Sourced CVD Graphene‐Gold Nanoparticles Nanointerfaces
Electroanalysis ( IF 3 ) Pub Date : 2020-09-17 , DOI: 10.1002/elan.202060230
Adeniyi Olugbenga Osikoya 1 , Penny Poomani Govender 1
Affiliation  

The development of sensitive, fast and efficient nanointerfaces as platforms for electrochemical sensing devices for the detection of environmental pollutant including antibiotic pollutant has become a matter of priority for public safety. We report herein a benzene sourced graphene‐gold nanoparticle sensor for the detection of tetracycline using chronoamperometry. Structural analysis using Raman Spectroscopy and x‐ray diffraction spectroscopy (XRD) confirmed the presense of few‐layer graphene. Atomic force (AFM) and scanning electron microscopy (SEM) characterization results confirmed the synthesized graphene to be thin flat sheet‐like material with wide surface area and a thickness of less than 1 nm. Cyclic voltammetry characterization of the fabricated modified electrodes showed diffusion controlled process for the oxidation of tetracycline. The modified electrode exhibited a fast response to the detection of tetracycline and a sensitivity of 1,86×102 μA/mM/cm2.The theoretical detection limit (S/N=3) was 1,60×10−1 μM and the linear dynamic range was from 2,90×101 μM to 1.53×103 μM.

中文翻译:

电化学检测高灵度苯来源的CVD石墨烯-金纳米颗粒纳米界面上的四环素

灵敏,快速和高效的纳米界面作为电化学传感设备的平台,用于检测包括抗生素在内的环境污染物已成为公共安全的优先事项。我们在此报告一种使用计时电流法检测苯的石墨烯-金纳米颗粒传感器,用于检测四环素。使用拉曼光谱和X射线衍射光谱(XRD)进行的结构分析证实了薄层石墨烯的存在。原子力(AFM)和扫描电子显微镜(SEM)表征结果证实,合成的石墨烯是薄的平板状材料,具有宽的表面积和小于1 nm的厚度。制备的修饰电极的循环伏安法表征显示了四环素氧化的扩散控制过程。2  μA/毫摩尔/厘米2 .The理论检测极限(S / N = 3)为1.60×10 -1  μM和线性动态范围为2,90×10 1  μM至1.53×10 3  μM。
更新日期:2020-09-17
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