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- W2165458946 abstract "Abstract Novel PbWO 4 crystals with different morphologies, 14-faceted polyhedrons, hierarchical microspheres and nanoparticles, were fabricated by adjusting pH value under hydrothermal conditions. The as-prepared PbWO 4 samples were characterized by nitrogen-physical adsorption, powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–vis diffuse reflectance spectra, photoluminescence emission spectroscopy, and Fourier transform infrared spectroscopy. The photocatalytic performance of the PbWO 4 crystals with different nanostructures in degradation of the acid orange II dye under UV light (365 nm) was investigated. The plausible growth mechanisms for PbWO 4 crystals with different morphologies were proposed. Photocatalytic tests showed that the performance of PbWO 4 crystals strongly depended on their morphologies. PbWO 4 microspheres with hierarchical nanostructures prepared under pH 7.0 at 140 °C exhibited the highest activity and stability in recycling reaction. The degradation kinetics of dye over PbWO 4 crystals was found to conform to the pseudo-first order model. The enhanced photocatalytic performance was attributed to the unique hierarchical nanostructures with high surface area and improved surface properties. Moreover, the high crystallinity of PbWO 4 microspheres exhibited an enhanced catalytic activity owing to lower recombination rate of photo-generated electron/hole pairs. These novel hierarchical PbWO 4 microspheres hold promise in applications of environmental purification." @default.
- W2165458946 created "2016-06-24" @default.
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- W2165458946 date "2013-03-01" @default.
- W2165458946 modified "2023-09-30" @default.
- W2165458946 title "Hydrothermal synthesis and characterization of novel PbWO4 microspheres with hierarchical nanostructures and enhanced photocatalytic performance in dye degradation" @default.
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- W2165458946 doi "https://doi.org/10.1016/j.cej.2012.12.064" @default.
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