A Cu (II) complex has been heterogenized on SBA-15 by functionalization of SBA-15 with (N1-propylethane-1, 2-diamine) triethoxysilane (NN-SBA-15) followed by anchoring of 2- pyridinecarboxaldehyde through Schiff's base formation between the terminal–NH2 and the aldehyde group of 2-pyridinecarboxaldehyde (Py-NN-SBA-15), and finally, copper (II) was immobilized through complexation. Copper (II) complex heterogenized on SBA-15 (Cu (II)- ...