Visible-light-driven and ultrasonic-assisted copper metal-organic frameworks and graphene oxide nanocomposite for decolorization of dyes

The crystalline and nano-sized {[Cu(tipe)(H2O)](2,2′-bpdc)·11H2O·DMF}n (1·11H2O·DMF or Cu-tipe) (tipe ​= ​1,1,2,2-tetrakis (imidazole-1-yl)phenyl)ethylene, 2,2′-bpdc ​2,2′-biphenyldicarboxylate) were synthesized structural analysis by X-ray diffraction, scanning electron microscopy, optical band gaps, photoluminescence thermal stability. Cu-tipe graphene oxide (GO) nanocomposite (Cu-tipe/GO) was with sonochemical method characterized. exhibits a (4,4)-coordinated 2D network showing the point symbol {44·62}{44·62}. photocatalytic sonocatalytic decolorization of methylene blue (MB), methyl violet (MV), rhodamine B (RhB) under visible light ultrasound irradiation showed that catalytic efficiencies organic dyes for Cu-tipe/GO composite are higher than these most MOF composite. Crystalline also high decolization efficiencies. radicals trapping experiments carried out to study active species degradation mechanism proposed.