Abstract
Herein, we report the in-situ crystallization of CeO2 nanoparticles (NPs) onto the polyaniline (PANI)-modified polystyrene (PS) latexes via a two-step approach. The resulting polymer/CeO2 products were characterized in terms of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetry, UV–Vis spectra, Fourier-transform infrared spectroscopy and photoluminescence (PL) spectroscopy. The core/shell structured polymer/CeO2 composites were utilized as photocatalysts for the degradation of methylene blue dye molecules in aqueous solution. The photocatalytic activity of PS/PANI/CeO2 ternary hybrids under UV light irradiation was evaluated and compared with that of PS/CeO2 binary composites. By comparison with PS/CeO2, UV–Vis and PL spectra results revealed that the PS/PANI/CeO2 exhibited a narrowed bandgap, a broadened light response range and an improved separation efficiency of photogenerated electron–hole pairs, which contributed to enhancement of the photocatalytic activity. As expected, the tri-layer PS/PANI/CeO2 hybrids exhibited relative-high photodegradation efficiency compared to the PS/CeO2 ones and commercial CeO2 NPs, which might be attributed to the synergic effect between CeO2 and PANI. The provided data indicated that the developed tri-layer PS/PANI/CeO2 hybrids exhibited application potentials in photodegradation towards wastewater containing organic dyes.
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This study was supported financially by the National Natural Science Foundation of China (Grant Nos. 51575058 and 51875052), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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Chen, Y., Wang, T., Pan, J. et al. Fabrication, characterization and photocatalytic degradation activity of PS/PANI/CeO2 tri-layer nanostructured hybrids. Bull Mater Sci 45, 45 (2022). https://doi.org/10.1007/s12034-021-02635-8
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DOI: https://doi.org/10.1007/s12034-021-02635-8