Surface decoration of MnWO 4 nanoparticles with g-C 3 N 4 nanosheets to build hetero-structure and its structural, optical and enhanced visible light photocatalytic activity
作者： V. Rathi , A. Panneerselvam , R. Sathiyapriya
DOI: 10.1007/S10854-020-04045-8
关键词: Materials science 、 Raman spectroscopy 、 Photocatalysis 、 Nanoparticle 、 Rhodamine 、 Spectroscopy 、 Photoluminescence 、 X-ray photoelectron spectroscopy 、 Chemical engineering 、 Tungstate
摘要: In this study, we report the synthesis of manganese tungstate (MnWO4)/graphitic carbon nitrides (g-C3N4) hybrid photocatalysts by simple hydrothermal method. The prepared have been characterized X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive (EDX) analysis, photoelectron spectroscopy (XPS), Raman spectroscopy, photoluminescence (PL) and UV–visible spectroscopy. XRD TEM results reveal that both pure composite samples monoclinic wolframite structure with spherical nanoparticles, which is decorated on surface g-C3N4 sheets. A considerable red shift in absorption narrowing band gap (3.02–2.55 eV) was observed MnWO4/g-C3N4 samples. photocatalytic measurements exhibit optimized photocatalyst (15 wt%-MnWO4/g-C3N4) show high degradation efficiency (98%) long-term stability towards rhodamine (RhB) dye under visible light irradiation. J-V characteristics photoanode photo-conversion (PCE%) 7.15%, higher than MnWO4 (2.34%). significant enhancement behavior due to coactions between nanosheets nanoparticles.
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