1. Silver iron oxide nanoparticles (AgFeONPs) with narrow size distribution have been synthesized, characterized and was applied for biothiols separation.
2. AgFeO2 and AgFeO2 modified chitosan (AgFeO@CTS NPs) were synthesized using a hydrothermal method and then characterized by electron microscopy (transmission electron
microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX)), X-ray diffraction(XRD), and Fourier transform infrared (FTIR). Different biological thiols (dithiothreitol, glutathione, thiabendazole,
and sulfamethizole) were investigated and characterized using matrix assisted laser desorption/ionization
mass spectrometry (MALDI–MS) and surface assisted laser desorption/ionization mass spectrometry (SALDI–
MS). The new material displays dual functionality; 1) for separation and 2) can be served as the matrices for
SALDI–MS. Data showed a clear background in the case of nanomaterials compared to conventional matrices
(mefenamic acid and 2,5-dihydroxybenzoic acid (DHB) for MALDI–MS).