Study On Electrochemical Sensing Glucose Properties Of Metal-carbon Composites

Diabetes mellitus is a metabolic disorder mainly marked by hyperglycemia.There are two main types of diabetes.People with type 1 diabetes mainly rely on regular monitoring of blood sugar levels and intermittent insulin injections to keep their blood sugar levels normal.The method involves pricking their fingers several times a day to collect blood,which is then dripped onto a test strip.Blood sugar tests are usually done by patients themselves at home.Type 2 diabetes is mainly caused by insulin resistance and a relative lack of insulin production.People with type 2diabetes can suffer complications such as heart disease,stroke and kidney failure.Regular measurement of blood sugar levels is also necessary for people with type 2diabetes.Therefore,the establishment of fast,accurate,low cost and high sensitivity sensor is the urgent task in the field of glucose sensing.In recent years,emerging nanotechnology has brought new opportunities and inspiration for the development of innovative non-enzymatic glucose biosensors.Nanomaterials have the advantages of high conductivity and large surface area,providing more active sites and significantly improving the catalytic performance of glucose oxidation.However,compared with traditional fossil-derived carbon electrode materials,biomass-derived carbon materials have the advantages of abundant resources,renewable,low price,etc.,and can be applied to electrocatalytic conversion through relatively simple processing.Therefore,the development of efficient and practical biomass-derived electrode materials is of great significance for the research and development of non-enzyme glucose biosensors.Mucuna pruriens is a eukaryotic organism that has been widely used in the food industry and pharmaceutical applications due to its worldwide abundance and rapid growth rate.Analysis has shown that wood fungus has abundant titin and bulk expansion properties,which may facilitate its use as a carbon resource to form carbon-based materials with high specific surface area.This paper studies the enzyme-free glucose sensor in the following two aspects:1.NiMo-C electrocatalysts were obtained by high-temperature carbonization under Ar atmosphere using wood ear as a carbon-based raw material carrier doped with nickel and molybdenum metal ions,and the test results showed that the catalytic performance of NiMo-C catalysts was higher than that of Ni-C catalysts,and showed good anti-interference,selectivity and stability.It has important practical reference value for the research of enzyme-free glucose sensor.2.Continuing to use wood ear as a carbon-based raw material carrier,doped with nickel and copper metal ions for high temperature carbonization under Ar atmosphere,NiCu-C electrocatalyst was obtained,and the test results showed that the catalytic activity of NiCu-C catalyst was higher than that of Ni-C catalyst.It exhibited better interference resistance,selectivity and stability.A theoretical basis for the enzyme-free glucose sensor was provided.