Study On Electrochemical Sensing Based On Two-dimensional Layered Nanomaterials

In recent years,with the rapid development of China's economy,people's living standards have continued to improve,and diseases caused by food contamination are one of the most widespread health problems in the world today.Among them,the incidence of foodborne illness caused by foodborne infection and foodborne poisoning ranks second in the total incidence of various diseases.Therefore,how to detect food contamination quickly and sensitively becomes the focus of researchers.The emergence of nanomaterials has provided more possibilities to solve the above problems,especially due to two-dimensional layered nanomaterials have diversity,large specific surface area,unique photoelectric properties,quantum size effects,surface effects and other properties that make them widely used in sensing.In addition,it also has a good application prospect in the field of detection of toxic and harmful substances,environmental monitoring and biomedicine.In this paper,cobalt-nickel oxide nanorods decorated molybdenum disulfide nanosheets?Ni Co₂O₄-Mo S₂?,gold nanoparticles decorated black phosphorus?Au NPs-BP?and gold nanoparticles decorated molybdenum oxide?Au NPs-Mo O_x?nanomaterials were synthesized by simple one step hydrothermal method and magnetic stirring,three new electrochemical sensors were successfully constructed,which were used for glucose,patulin?PAT?and ochratoxin A?OTA?,respectively.Test results were compared with the same type of sensor,glucose sensor of wide linear range,low detection limit,detection PAT and OTA's sensor at the same time show the linear range and excellent properties such as short response time,OTA sensor is high sensitivity,wide linear range.This study provides a new idea for the development of high-performance electrochemical sensors and a reference for the detection of small molecules in food.