Journal
JOURNAL OF EXPERIMENTAL NANOSCIENCE
Volume 11, Issue 6, Pages 418-432Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080.2015.1070312
Keywords
green approach; CuS nanoparticles; photodegradation; xanthan gum
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Funding
- UGC, New Delhi
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A green method for the solvothermal synthesis of copper sulphide nanoparticles (CuS NPs) using xanthan gum as a capping agent was developed. The CuS NPs were characterised by scanning electron microscopy, transmission electron microscopy (TEM), X-ray diffraction, Brunauer-Emment-Teller, zeta analysis, thermal gravimetric- differential thermal analysis, Fourier transform infrared and UV-visible absorption spectra. These characterisations together determine the composition, structural, thermal and optical properties. The UV-visible spectrum had a broad absorption in the visible range. The particle size of the products was observed by TEM in the range of 8-20 nm. The photocatalytic performance of the CuS NPs was evaluated for the degradation of organic dyes (methylene blue, rhodamine B, eosin Y and congo red) under irradiation of solar, visible and UV lights. The CuS NPs showed good photocatalytic activity. Kinetic analyses indicate that the photodegradation rates of dyes usually follow pseudo-first-order kinetics for degradation mechanisms.
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