Research On Nonenzymatic Electrochemical Sensor Based On Novle Nanocomposites

Electrochemical sensor is one of the most active fields in the study of test methods for life science and clinical medicine. It has been widely used in clinical, industrial, environmental and agricultural analysis. With the development of nanotechnology, the rapid development of nanotechnology provides a rare opportunity for development of new electrochemical sensor. In recent years, more and more people are using nonenzymatic electrochemical and electroluminescent technology to construct nonenzymatic electrochemical sensors able to detect the materials of hydrogen peroxide solution and glucose etc. based on nanomaterial features of large surface area, high surface reactivity and strong electric catalytic ability.This paper developed newly glucose and hydrogen peroxide sensor with good electrochemical function and opened up its research field based on the advantage of nano composite materials and sensitivity of electrochemical sensing technology.The content is as follows:1. A novel nonenzymatic ECL glucose sensor based on perovskite La Ti O3-Ag0.1 nanomaterials was proposed. The La Ti O3-Ag0.1 Nanomaterials were synthesized by particulate sol-gel method, and its morphologies and compositions were characterized by SEM, TEM, and XRD. Electrochemical characterization methods were used to study the ECL behavior of the La Ti O3-Ag0.1-modified GCE. Under optimal conditions, the linear range and the detection limit of this sensor were tested, and its practical applications were further researched.2. A novel nonenzymatic ECL sensor using Au-HS/SO3H-PMO(Et) was researched. The nanocomposite(Au-HS/SO3H-PMO(Et))doped gold nanoparticles into the ordered mesoporous silica through covalent bond effect with HS/SO3H-PMO(Et) as the carrier. In this paper, we have applied the good electrocatalytic activity of Au nanoparticles to achieve the good electrocatalytic oxidation of glucose.3. We have developed a nonenzymatic hydrogen peroxide electrochemical sensor based on Au-HS/SO3H-PMO(Et) nanocomposite and studied the electrochemical behavior of the sensor by a series of electrochemical characterization methods. Under optimal conditions, it shows a series of excellent sensing properties: high sensitivity, low detection limit, wide linear range, good selectivity and satisfactory practical applications.4. A novel nonenzymatic glucose sensor based on HO-Bi ONO3 nanocomposite was built. Applying a series of characterization methods and electrochemical testing technology, we have studied the morphologies and compositions of HO-Bi ONO3 nanocomposites, and the test of modified electrode on hydrogen peroxide. Moreover, the prepared sensor can be used for the detection of glucose in real samples with good accuracy.