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• W4200221154 endingPage "163522" @default.
• W4200221154 startingPage "163522" @default.
• W4200221154 abstract "Nanospheres were widely utilized as atomic clusters for the self-assembly and modification of functional nanomaterials. In this study, by using the laser-induced deposition in a liquid medium, the spherical Silver (Ag) and Tin dioxide (SnO2) nanocomposites were successfully prepared. The characteristics of the product, such as morphologies, components, structures and optical properties were obtained by STEM, EDS, ICP-OES, XPS, XRD, UV-Vis and PL instruments, respectively. During the laser-induced liquid deposition, the pristine Ag nanoparticles were melted to be spheres with the average particle size decreased and welded with the SnO2 nanomaterials under the laser heating and liquid quenching. The photocatalytic performance of the synthesized nanocomposites was evaluated by the degradation of methylene blue aqueous solution as a model organic pollutant. The results indicated that, for the spherical Ag and SnO2 nanocomposites, the reaction rate constant was enhanced 3.1 times than the pure-SnO2 nanomaterials and 13.3 times than the pure-Ag nanoparticles, respectively, with a high value of 0.08 min−1. Where 99.1% methylene blue can be removed in 60 min by using Ag and SnO2 nanocomposites as catalysts under ultraviolet lamp irradiation. This performance performed better than the previous reports in similar physical conditions. The possible enhanced mechanism was analyzed, where the spherical Ag anchoring on the surface of SnO2 induced the perturbation of SnO2 bandgap, the free electrons transfer of spherical Ag promoted the separation of photogenerated electron-hole pairs, increased the formation of superoxide and hydroxyl radicals for methylene blue effectively removal via a redox reaction." @default.
• W4200221154 created "2021-12-31" @default.
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• W4200221154 date "2022-04-01" @default.
• W4200221154 modified "2023-10-03" @default.
• W4200221154 title "Preparation of spherical silver and tin dioxide nanocomposites with the high photocatalytic performance by laser-induced deposition in liquid medium" @default.
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• W4200221154 doi "https://doi.org/10.1016/j.jallcom.2021.163522" @default.
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