Synthetic Tuning of Co^II-Doped Silica Nanoarchitecture Towards Electrochemical Sensing Ability.

ABSTRACT: The present work introduces both synthesis of silica nanoparticles doped with Co^II ions by means of differently modified microemulsion water-in-oil (w/o) and Stöber techniques and characterization of the hybrid nanoparticles (Co^II@SiO₂) by TEM, DLS, XRD, ICP-EOS, SAXS, UV-Vis, and UV-Vis/DR spectroscopy and electrochemical methods. The results reveal the lack of nanocrystalline dopants inside the hybrid nanoparticles, as well as no ligands, when Co^II ions are added to the synthetic mixtures as Co^II(bpy)₃ complexes, thus pointing to coordination of Co^II ions with Si-O^- groups as main driving force of the doping. The UV-Vis/DR spectra of Co^II@SiO₂ in the range of d-d transitions indi

SUBMITTER: Bochkova O 

PROVIDER: S-EPMC7407651 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature