Fig. 1

Characterization of different nanocomposites. TEM images of MONs (A-C), MOF-199 (D), MONs@MOF-199 (E), and SPMM (F). G DLS experiments of SPMM. H-I N₂ adsorption–desorption isotherms of MONs. J-L XPS experiments of SPMM. M DSC-TG test of D/S@SPMM nanocomposites