首页>
外国专利>
METAL NANOPARTICLE/NANOCELLULOSE COMPOSITE-BASED ENZYME-FREE GLUCOSE ELECTROCHEMICAL SENSOR AND PREPARATION METHOD THEREFOR
METAL NANOPARTICLE/NANOCELLULOSE COMPOSITE-BASED ENZYME-FREE GLUCOSE ELECTROCHEMICAL SENSOR AND PREPARATION METHOD THEREFOR
展开▼
机译:基于金属纳米颗粒/纳米纤维素的无酶葡萄糖电化学传感器及其制备方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
Provided is a metal nanoparticle/nanocellulose composite-based enzyme-free glucose electrochemical sensor, comprising a three-electrode system composed of a working electrode, a counter electrode and a reference electrode. The surface of the working electrode is covered with a nanocellulose/metal nanoparticle composite, and the surface of the nanocellulose is modified with a strong cation conductive polymer. A corresponding preparation method for the sensor comprises: modifying the surface of nanocellulose with the strong cation conductive polymer; then in-situ depositing the metal nanoparticles onto the surface thereof, so as to prepare the nanocellulose/metal nanoparticle composite; and modifying the working electrode with the composite. The working electrode improves the sensitivity and selectivity for glucose analysis, so that the sensor has high sensitivity, quick response, stable performance and strong anti-interference capability. The linear detection range for glucose is 4 ì M-15 mM and the detection limit is 1.4 ì M. The preparation method therefor is simple and low in cost, and no enzyme is introduced during the preparation.
展开▼