CuO–NiO Bimetallic Nanoparticles Supported on Graphitic Carbon Nitride with Enhanced Catalytic Performance for the Synthesis of 1,2,3‐triazoles, Bis‐1,2,3‐triazoles, and Tetrazoles in Parts Per Million Level

The unification of CuCl2 center dot 2H(2)O and NiCl2 center dot 6H(2)O with the support of graphitic carbon nitride yielded to form an efficient, synergistic, bimetallic nano-catalyst CuO-NiO@g-C3N4. FT-IR, SEM, TEM-EDX, PXRD, RAMAN, TGA, and XPS were used as the confirmatory techniques to establish the evidence of its absolute formation. Catalyst with three different molar ratios of Cu and Ni, that is, Cu75Ni25 (Cu:Ni = 3:1; catalyst-a), Cu50Ni50 (Cu:Ni = 1:1; catalyst-b), and Ni66Cu33 (Ni:Cu = 2:1; catalyst-c), was synthesized, and their catalytic activity was examined. The synergistic interaction of one metal with the other on the surface of extremely stable graphitic carbon nitride has enhanced the catalytic performance in the synthesis of triazole, tetrazole, and bis-triazole derivatives to such a distinguished level (in ppm level), which a monometal fail to possess. The aforementioned statement has been supported by the catalytic activity data provided for both the monometallic and bimetallic catalyst herein. In addition to this, benign reaction conditions, in situ generation of azides, wide reaction scopes, and reusability of the catalyst were also the major advantages leading toward safe and sustainable chemistry beyond doubt.