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    • Keywords


      Core/shell structure; PS/PANI/CeO$_2$; hybrids; photocatalytic activity; photodegradation.

    • Abstract


      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.

    • Author Affiliations



      1. School of Materials Science and Engineering, Changzhou University, Jiangsu 213164, People’s Republic of China
      2. School of Mechanical Engineering, Changzhou University, Jiangsu 213164, People’s Republic of China
    • Dates

  • Bulletin of Materials Science | News

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