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首页> 外文期刊>International Journal of Electrochemical Science >Molecularly Imprinted Sensor based on Ag-Au NPs/SPCE for Lactate Determination in Sweat for Healthcare and Sport Monitoring
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Molecularly Imprinted Sensor based on Ag-Au NPs/SPCE for Lactate Determination in Sweat for Healthcare and Sport Monitoring

机译：基于Ag-Au NPS / SPCE用于医疗保健和运动监测的乳酸乳酸测定的分子印迹传感器

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This study presented fabrication of wearable amperometric lactate sensor based on molecularly imprinted polymer on Ag-Au nanoparticles (MIP/Ag-Au NPs) modified screen-printed carbon electrodes (SPCE) for sweat analysis in healthcare and sport monitoring. For modification of SPCE, the chemical synthesized Ag and Au NPs were spin-coated on SPCE, and MIPs electropolymerized on Ag-Au NPs/SPCE surface. Structural and morphological analyses by SEM, XRD and EDS confirmed that spherical Ag-Au nanoparticles were distributed homogeneously on the of MIP molecules. Electrochemical studies by CV and amperometry techniques indicated that the synergetic effect of the modification of the Ag-Au NPs with MIP particles were resulted in larger electroactive sites on the surface and improve the stability, selectivity and analytical signal because of their direct and fast electron transfer between a substrate and electrochemical ions. The linear range, detection limit and sensitivity of lactate sensor was obtained of 1-220μM, 0.003μM and 0.88066μA/μM, respectively. The performance of the proposed flexible sensor was examined after applied mechanical forces and results demonstrated great durability and stability under the twisting and bending. MIP/Ag-Au NPs/SPCE sensor was attached to volunteers’ skin for the monitoring of the lactate level during cycle exercise and obtained results suggested that MIP/Ag-Au NPs/SPCE as feasible and reliable wearable sensor can be used for continuously monitoring of lactate level in sweat.
机译：该研究介绍了基于分子印迹聚合物的可穿戴式乳酸乳酸传感器的制备在Ag-Au纳米粒子（MIP / Ag-Au NPS）改性的丝网印刷的碳电极（SPCE）上进行医疗保健和运动监测的汗液分析。对于SPCE的改性，将化学合成的AG和Au NPS旋涂在SPCE上，并在Ag-Au nps / Spce表面上电聚合的MIPS。 SEM，XRD和EDS的结构和形态学分析证实，球形Ag-Au纳米颗粒在MIP分子上均匀分布。通过CV和Amperometry技术的电化学研究表明，具有覆盖粒子的Ag-Au NP的改性的协同作用导致表面较大的电活性位点，提高稳定性，选择性和分析信号，因为它们的直接和快速电子转移在基板和电化学离子之间。乳酸盐传感器的线性范围，检测限和敏感性分别为1-220μm，0.003μm和0.88066μA/μm。在施加的机械力之后，检查了所提出的柔性传感器的性能，结果表明了扭曲和弯曲下的耐用性和稳定性。 MIP / AG-AU NPS / SPCE传感器安装在循环运动中监测乳酸水平的志愿者皮肤，并获得结果表明MIP / AG-AU NPS / SPCE可用于不断监测的可行性和可靠的可穿戴传感器乳酸水平在汗水中。

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