Abstract
A series of Na2Mo4O13/alpha-MoO3 hybrid catalysts were synthesized by using different sodium precursors of Na-X (X=NO3-, Cl-, CH3COO-, CO32-), and the influence on the degradation of cationic red GTL in the catalytic wet air oxidation (CWAO) process was systematically investigated. The structure and morphology of the catalysts were examined using XRD and SEM analyses, indicating that the highly efficient Na2Mo4O13/alpha-MoO3 hybrid catalysts with nanofiber morphology could be synthesized by adding different sodium salts. The influence of testing temperature, volume of dye were also evaluated. For all those four catalysts, approximately 100% of color could be removed within 40 min. Cycling tests suggested that the catalysts exhibited a very good durability, the degradation efficiency of cationic red GTL still reached up to 99.92% even after 5th cycle.