An electrochemical immunoassay for Escherichia coli O157:H7 using double functionalized Au@Pt/SiO2 nanocomposites and immune magnetic nanoparticles

The fabrication process of Ab-Fe3O4@SiO2 NPs, Au@Pt NPs, Ab/invertase-Au@Pt/SiO2 NPs; experimental procedure for detection of E. coli O157:H7 using Ab-Fe3O4@SiO2 NPs and Ab/invertase-Au@Pt/SiO2 NPs as the signal transduction probe based on personal glucose meter.172