Effects of aqueous-organic solvents on peroxidase mimetic activity of Fe_3O_4 magnetic nanoparticles
水溶性有机溶剂对Fe_3O_4磁性纳米粒子过氧化物酶样活性的影响

We prepared Fe3O4 magnetic nanoparticles (MNPs) with the size of 10 nm by chemical coprecipitation.The effects of six aqueous-organic solvents,including tetrahydrofuran,dioxane,acetone,N,N-Dimethylformamide,methylalcohol,and Dimethyl Sulfoxide,on peroxidase mimetic activity of Fe3O4 MNPs were studied and compared with that of horseradish peroxidase (HRP).The relative activity of Fe3O4 MNPs droped sharply as the elevation of organic solvent concentration increased from 30% to 75% (V/V).In 15% organic solutio...