Two novel octamolybdate nanoclusters as catalysts for dye degradation by air under room conditions.
Two novel inorganic-organic hybrid materials, namely, (NH4)2CuMo8O26(C10H8N2)2 (1) and Mo8O26(C10H10N2)2(C10H8N2)·2(H2O) (2) have been synthesized based on β-octamolybdate cluster and 4,4'-bipyridine (4,4'-bpy) ligand under solvothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses and characterized by FT-IR, atomic absorption spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). In addition, microcrystals of 1 were used to synthesize its nanocrystals via an ultrasound-assisted top-down method. The nanocrystals were characterized by scanning electron microscopy (SEM), PXRD and FT-IR analyses. The prepared hybrid materials have been proved to be active heterogeneous catalysts for catalytic wet air oxidation (CWAO) of some dyes under mild conditions. Leaching experiments showed that the catalysts had good stability under the reaction conditions and could be easily recycled and reused after a simple treatment.
School of Chemistry, College of Science, University of Tehran, Tehran, Iran. aabbasi@khayam.ut.ac.ir.
Mahnaz
M
Najafi
Alireza
A
Abbasi
Majid
M
Masteri-Farahani
Jan
J
Janczak
D000388:Air; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D008982:Molybdenum / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D013696:Temperature; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D004396:Coloring Agents; D056831:Coordination Complexes; D008982:Molybdenum; D062065:Wastewater; D014874:Water Pollutants, Chemical; C044659:molybdate