Abstract
Manganese-based 2D nanoparticles with increased longitudinal relaxivity (r1) in MRI were synthesisedby co-precipitation at low suprasaturation. The results of physico-chemical characterizations, i.e., XRD,FT-IR, DR UV–vis, N2 physisorption, and SEM, showed an excellent 2D nanomaterial in which manganeseis predominantly incorporated as Mn2+ and Mn3+. The r1 relaxivity obtained on a 1.0 Tesla apparatus atpH = 7.4 is significantly improved (r1 = 1.298 mM1 s1) as compared with other similar layered materialscontaining manganese.