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Synthesis of rGO@ZnS Nanocomposites for Visible Light Assisted High Photocatalytic Performance


Affiliations
1 Department of Physics, Presidency University, 86/1 College Street, Kolkata-700073, India
2 Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, Block - AF, Sector - 1, Bidhannagar, Kolkata, West Bengal-700064, India
 

ZnS nanobelts and ZnS@reduced graphene oxide (rGO) nanocomposites were synthesized via simple solvothermal treatments. The chemical composition, structure and optical properties of ZnS nanobelts and ZnS@rGO nanocomposites samples were characterized by X-ray diffraction (XRD),Raman Spectroscopy and FESEM, UV-visible spectroscopy. We have used UV-Visible absorption spectra to find the optical band gap of prepared ZnS nanobelts and ZnS@rGO nanocomposites, direct bandgap of pure ZnS is 2.70 eV and that in case of ZnS@rGO is about 2.59 eV. The bandgap of pure ZnS nanostructure differ significantly from bulk ZnS due to the quantum confinement effect in nanostructure. ZnS nanostructure and ZnS@rGO nanocomposites were used as a photocatalyst for the degradation of methylene blue (MB) under visible light irradiation.

Keywords

Reduced Graphene Oxides, Nanocomposites, Photo Catalyst.
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  • Maity R. and Chattopadhyay K.K., Nanotechnology, 15, (2004) 812-816.
  • Tittel J., Gohde W., Koberling F., Basche T., Kornowski A., Weller H. and Eychmuller A., J. Phys. Chem. B, 101, (1997) 3013-3016.
  • Dinsmore A.D., Hsu D.S., Gray H.F., Qadri S.B., Tian Y. and Ratna B.R., Appl. Phys. Lett., 75, (1999) 802-804.
  • Rogach A.L., Mater. Sci. Eng. B, 69-70, (2000), 435-440.
  • Mahamuni S., Borgohain K., Bendre B.S., Leppert V.J. and Risbud S.H., J. Appl. Phys., 85, (1999), 2861-2865.
  • Wang L., Xu X. and Yuan X., Journal of Luminescence, 130, (2010) 137-140.
  • Zhang Y., Zhang N., Z.-Rong Tang and Yi-Jun Xu, ACS Nano, 1, (2012) 9777-9789.
  • Yuan J.L., Kajiyoshi K., Yanagisawa K., Sasaoka H. and Nishimura K., Mater. Lett., 60, (2006), 1284-1286.
  • Zhao Q., Hou L. and Huang R., Inorg. Chem. Commun., 6, (2003) 971-973.
  • Maity R., Maiti U.N., Mitra M.K. and Chattopadhyay K.K., Physica E, 33, (2006) 104109.
  • Liao X.H., Zhu J.J. and Chen H.Y., Mater. Sci. Eng. B, 85, (2001) 85-89.

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  • Synthesis of rGO@ZnS Nanocomposites for Visible Light Assisted High Photocatalytic Performance

Abstract Views: 536  |  PDF Views: 5

Authors

S. Dutta
Department of Physics, Presidency University, 86/1 College Street, Kolkata-700073, India
S. Pal
Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, Block - AF, Sector - 1, Bidhannagar, Kolkata, West Bengal-700064, India
S. Mondal
Department of Physics, Presidency University, 86/1 College Street, Kolkata-700073, India
S. De
Department of Physics, Presidency University, 86/1 College Street, Kolkata-700073, India

Abstract


ZnS nanobelts and ZnS@reduced graphene oxide (rGO) nanocomposites were synthesized via simple solvothermal treatments. The chemical composition, structure and optical properties of ZnS nanobelts and ZnS@rGO nanocomposites samples were characterized by X-ray diffraction (XRD),Raman Spectroscopy and FESEM, UV-visible spectroscopy. We have used UV-Visible absorption spectra to find the optical band gap of prepared ZnS nanobelts and ZnS@rGO nanocomposites, direct bandgap of pure ZnS is 2.70 eV and that in case of ZnS@rGO is about 2.59 eV. The bandgap of pure ZnS nanostructure differ significantly from bulk ZnS due to the quantum confinement effect in nanostructure. ZnS nanostructure and ZnS@rGO nanocomposites were used as a photocatalyst for the degradation of methylene blue (MB) under visible light irradiation.

Keywords


Reduced Graphene Oxides, Nanocomposites, Photo Catalyst.

References