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Applied clay science v.138, 2017년, pp.107 - 113   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Graphitic-C3N4 modified ZnAl-layered double hydroxides for enhanced photocatalytic removal of organic dye

Yuan, Xiaoya (Corresponding author. ) ; Li, Wenyu ;
  • 초록  

    Abstract Layered double hydroxides (LDH) are one of the most important photocatalyts intensively investigated for photodecolorization of organic dyes. ZnAl-LDH was successfully modified with graphitic-C 3 N 4 (g-C 3 N 4 ) by a simple in situ crystallization technique. The obtained C 3 N 4 /ZnAl-LDH composites were thoroughly characterized by Scanning electron microscopy (SEM), High-resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance spectroscopy (DRS). The detailed analysis indicated that g-C 3 N 4 sheets could act as substrate to induce the growth of LDH crystallites and ZnAl-LDH platelets randomly distributed on the sheets with a strong interaction between them. The photocatalytic activities of C 3 N 4 /ZnAl-LDH composites toward decolorization of methylene blue (MB) highly depended on the loading of g-C 3 N 4 . At the g-C 3 N 4 weight loading of 18%, the rate constant of C 3 N 4 /ZnAl-LDH was more than five times and nearly two times than that of pure ZnAl-LDH and g-C 3 N 4 respectively. The enhanced activity of C 3 N 4 /ZnAl-LDH composites could be ascribed to the synergistic effect between two components of the composites. Highlights ZnAl-LDH was successfully modified with different loadings of g-C 3 N 4 by a simple in situ crystallization technique. The rate constant of C 3 N 4 -18/ZnAl-LDH was more than five times and almost two times than that of pure ZnAl-LDH and C 3 N 4 respectively. The enhanced activity of C 3 N 4 /ZnAl-LDH composites could be ascribed to the synergistic effect between two components of the composites. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Photocatalytic degradation .   g-C3N4 .   Layered double hydroxides .   Methylene blue.  

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