Facile hydrothermal synthesis of Cu-doped MoS2 nanomaterial: a potential photocatalyst for degradation of MB dye
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Original research

Molybdenum Disulphide (MoS2) being an efficient photocatalyst due to its unique optical and structural properties, have attained the attention of researchers during last decade. However, poor absorption of light, fast recombination of charge carriers and low active sites are the barriers for its effective use as a photocatalyst. These constraints could be removed by the incorporation of transition metals in pure MoS2. To that end, we employed a facile and cost-effective hydrothermal method for preparation of pure and copper (Cu) doped (1, 3, 5, and 7%) MoS2 nanomaterials to investigate their degradation efficiency against methylene blue (MB) dye at different pH values (04–10) of reaction solution. Various characterization techniques like SEM, EDX, XRD, FTIR, UV–Vis, and PL were utilized to explore the morphological, compositional, structural, vibrational and optical properties of fabricated nanomaterials. The results revealed that 5% Cu doped MoS2 is an optimal sample among all other fabricated materials, having hexagonal structure, lowest band gap and recombination time of photogenerated charge carriers. This leads to its extraordinary performance in the degradation of MB (i.e.94%) in basic medium having pH 09. The outcomes of this research would be a valuable contribution toward advancing the development of exceptionally efficient TMDs photocatalysts for degradation of organic pollutants.

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