2024年8月6日,海南医科大学的研究人员在Sensors and Actuators Reports期刊上发表了题为“High electrochemical performance of glucose detection based on tapered gold nanostructures and MXene layers”的研究成果。在这项工作中...2024年8月6日,海南医科大学的研究人员在Sensors and Actuators Reports期刊上发表了题为“High electrochemical performance of glucose detection based on tapered gold nanostructures and MXene layers”的研究成果。在这项工作中,研究人员通过HCl/LiF刻蚀大规模制备了均匀的MXene单层,并在MXene层上电沉积了锥形金纳米结构(AuTN)。展开更多
An effective and fast method for assay of micro-amounts of glucose was set up. A new technique for preparation of enzyme columns based on enzyme immobilization by sol-gel was investigated. Glucose oxidase(GOD) and hor...An effective and fast method for assay of micro-amounts of glucose was set up. A new technique for preparation of enzyme columns based on enzyme immobilization by sol-gel was investigated. Glucose oxidase(GOD) and horseradish peroxidase(HRP) mixed with SiO 2 nanoparticles and polyvinyl butyral(PVB) medium were immobilized on the surface of capillary tube, respectively. The experimental results show that nanoparticles can significantly enhance the catalytic activity of immobilized enzyme. Based on GOD column and HRP column, a liquid droplet sensor was developed for the determination of glucose solution. The effect of separated columns and mixed columns on the response of glucose sensor was investigated. The sensor showed a linear response in a range of 2-400 ng/mL with a detection limit of 0.3 ng/mL under the optimum conditions. The characteristics of the sensor including effect of flow-rate, pH and temperature were discussed.展开更多
文摘2024年8月6日,海南医科大学的研究人员在Sensors and Actuators Reports期刊上发表了题为“High electrochemical performance of glucose detection based on tapered gold nanostructures and MXene layers”的研究成果。在这项工作中,研究人员通过HCl/LiF刻蚀大规模制备了均匀的MXene单层,并在MXene层上电沉积了锥形金纳米结构(AuTN)。
文摘An effective and fast method for assay of micro-amounts of glucose was set up. A new technique for preparation of enzyme columns based on enzyme immobilization by sol-gel was investigated. Glucose oxidase(GOD) and horseradish peroxidase(HRP) mixed with SiO 2 nanoparticles and polyvinyl butyral(PVB) medium were immobilized on the surface of capillary tube, respectively. The experimental results show that nanoparticles can significantly enhance the catalytic activity of immobilized enzyme. Based on GOD column and HRP column, a liquid droplet sensor was developed for the determination of glucose solution. The effect of separated columns and mixed columns on the response of glucose sensor was investigated. The sensor showed a linear response in a range of 2-400 ng/mL with a detection limit of 0.3 ng/mL under the optimum conditions. The characteristics of the sensor including effect of flow-rate, pH and temperature were discussed.