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

Abstract Views: 493  |  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