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Synthesis and Characterization of CuS/CdS Photocatalyst with Enhanced Visible Light-Photocatalytic Activity

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Abstract:

In the present study, visible light active CuS/CdS nanocomposites of various compositions (1%, 2% and 3%) were synthesized via wet impregnation method and these photocatalysts were characterized by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and UV-visible diffuse reflectance spectroscopy (DRS). The photocatalytic degradation efficiency of the synthesized photocatalysts was evaluated from the degradation of methylene blue (MB) under the visible light irradiation. Among all compositions, a 1% CuS/CdS nanocomposite showed about 89.5% degradation in 90 min than the pure CuS, CdS and other composites. Photoluminescence and photoelectrochemical measurements indicated that the 1% CuS/CdS nanocomposite greatly enhanced the charge generation and restrained the recombination of photogenerated electron-hole pairs. A possible mechanism of photocatalytic degradation has been proposed.

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Journal of Nano Research Vol. 48 View Preview

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Periodical:

Journal of Nano Research (Volume 48)

Pages:

49-61

DOI:

https://doi.org/10.4028/www.scientific.net/JNanoR.48.49

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Online since:

July 2017

Authors:

A. Malathi, J. Madhavan*

Keywords:

Composites, Degradation, Metal Sulfides, Methylene Blue, Photocatalyst, Visible Light

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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