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    • AILIAN CHEN

      Articles written in Bulletin of Materials Science

    • Volume 45 All articles Published: 2 March 2022 Article ID 0045

      Fabrication, characterization and photocatalytic degradation activity of PS/PANI/CeO$_2$ tri-layer nanostructured hybrids

      YUE CHEN TIANYU WANG JIE PAN MENGHAN WANG AILIAN CHEN YANG CHEN

      More Details Abstract Fulltext PDF

      Herein, we report the in-situ crystallization of CeO$_2$ nanoparticles (NPs) onto the polyaniline (PANI)-modified polystyrene (PS) latexes via a two-step approach. The resulting polymer/CeO$_2$ 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/CeO$_2$ composites were utilized as photocatalysts for the degradation of methylene blue dye molecules in aqueous solution. The photocatalytic activity of PS/PANI/CeO$_2$ ternary hybrids under UV light irradiation was evaluated and compared with that of PS/CeO$_2$ binary composites. By comparison with PS/CeO$_2$, UV–Vis and PL spectra results revealed that the PS/PANI/CeO$_2$ 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/CeO$_2$ hybrids exhibited relative-high photodegradation efficiency compared to the PS/CeO$_2$ ones and commercial CeO$_2$ NPs, which might be attributed to the synergic effect between CeO$_2$ and PANI. The provided data indicated that the developed tri-layer PS/PANI/CeO$_2$ hybrids exhibited application potentials in photodegradation towards wastewater containing organic dyes.

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