Hollow Spherical Hierarchical MoO3/SiO2–TiO2 Structures for Photocatalytic Decomposition of Organic Pollutant in Water

• Spherical MoO 3 /TiO 2 –SiO composites with core/shell type, where the core is an α-MoO sphere and shell TiO anatase SiO amorphous was synthesized. Hierarchical structures in which layer are linked through oxygen (Ti-O-Mo Si-O-Mo) results lower vacancy concentrations (0.0425) a reduced bandgap width (2.58 eV). The exhibit high photocatalytic activity (rate constant 0.0645 min ‒1 ). layered spherical promising candidate material for decomposition of organic dyes textile waste water. In this study composites, having hierarchical structure, were synthesized on TOKEM-320Y anion exchanger template using by sol-gel methods. Properties characterized XRD, EDS, SEM, 3D X-ray microtomography, Raman, IR, DRS, BET, PL techniques. microtomography EDS analysis showed hollow diameters ranging from 200 to 400 μm structure. formation composite (2.56 eV compare 3.19 sample, analyzed UV–VIS DRS method). performance evaluated degradation methylene blue (MB) aqueous solution irradiated I excilamp (λ max = 312 nm). photoabsorption energy properties related interaction between occurs Ti-O-Mo Si-O-Mo. exhibited much higher , efficiency 93% (20 min). This work demonstrates relation heterostructure its photocatalitic activity, providing fundamental guidance improve materials.