The Synthesis And Performance Of Mesoporous Tungsten/Molybdenum Oxide Nanomaterials

The mesoporous materials are porous solids that their pore size is in the range of2⁵0nm. Owing to the bigger and uniform pores, high surface areas and comparatively favorablestability of mesoporous materials, they are widely used in many fields such as adsorption andseparation, environment science, catalysis and catalyst carrier, biomimic and else functionalmaterials and so on.The anodic aluminium oxide （AAO） membrane acting as templates, and thenano-channels of the template were used as micro-cavity reactor. The precursor was preparedwith the P123as porogen, sodium tungstate and ammonium molybdate as the tungsten/molybdenum source, and ethanol as the solvent. The nano-channels of the AAO templatewere filled with precursor depending on the vacuuming and pressure-induced. After theheating treatment, one-dimensional tungsten/molybdenum oxide nanomaterials withmesoporous structure were fabricated within the nano-holes of AAO template. The obtainedsamples were characterized in detail by SEM, TEM, XRD and so on. The experimental resultsshowed that the samples had better mesopore structure and high surface area. And thesamples have good photoluminescence properties.The mesoporous molybdenum oxide/tungsten oxide nanomaterials were synthesized bysolvent thermal method, and their adsorption performance was also discussed. Sodiumtungstate and ammonium molybdate as the tungsten/molybdenum source, and ethanol as thesolvent., and P123as structure directing agent and porogen. The WO₃/MoO₃sheet-shapestructure microspheres precursor was also obtained in temperature180℃, and thenWO₃/MoO₃sheet-shape structure microspheres have been synthesized after heating treatment.These samples were characterized and analysed by the XRD, SEM, TG and so on. The resultsshow that the as-prepared WO₃/MoO₃samples have mesoporous structure and large specificsurface area. The absorption test of as-synthesized mesoporous WO₃and MoO₃material forrhodamine B dye aqueous solution was also exploited, and the mesoporous WO₃and MoO₃materials had good adsorption performance.