Versatile Synthesis of Pd and Cu Co-Doped Porous Carbon Nitride Nanowires for Catalytic CO Oxidation Reaction

• Published in: Catalysts Vol. 8; no. 10; p. 411
• Main Authors: Eid, Kamel, Ahmad, Yahia, Mohamed, Assem, Elsafy, Anas, Al-Qaradawi, Siham
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2018
• Subjects: Adsorption; Carbon; Carbon monoxide; Carbon nitride; Catalysis; Catalysts; Chemical reactions; CO oxidation; Copper; Hydrogen; Melamine; Metals; Nanocomposites; Nanoparticles; Nanowires; Nitric acid; noble metal catalysts; Noble metals; Oxidation; Palladium; Photocatalysis; Polymerization; Reaction products; Qatar
• ISSN: 2073-4344; 2073-4344
• DOI: 10.3390/catal8100411

Developing efficient catalyst for CO oxidation at low-temperature is crucial in various industrial and environmental remediation applications. Herein, we present a versatile approach for controlled synthesis of carbon nitride nanowires (CN NWs) doped with palladium and copper (Pd/Cu/CN NWs) for CO oxidation reactions. This is based on the polymerization of melamine by nitric acid in the presence of metal-precursors followed by annealing under nitrogen. This intriguingly drove the formation of well-defined, one-dimensional nanowires architecture with a high surface area (120 m2 g−1) and doped atomically with Pd and Cu. The newly-designed Pd/Cu/CN NWs fully converted CO to CO2 at 149 °C, that was substantially more active than that of Pd/CN NWs (283 °C) and Cu/CN NWs (329 °C). Moreover, Pd/Cu/CN NWs fully reserved their initial CO oxidation activity after 20 h. This is mainly attributed to the combination between the unique catalytic properties of Pd/Cu and outstanding physicochemical properties of CN NWs, which tune the adsorption energies of CO reactant and reaction product during the CO oxidation reaction. The as-developed method may open new frontiers on using CN NWs supported various noble metals for CO oxidation reaction.