Abstract
In recent decades, photocatalysts have garnered increasing attention for their potential to address environmental issues and offer alternative energy sources. Recognizing the significance of this progress, our research focuses on synthesizing highly efficient photocatalysts for applications in photocatalytic hydrogen evolution and dye degradation. In this study, we synthesized highly effective Mn-doped CdS nanostructured photocatalysts using the ultrasonication method. The synthesized photocatalyst was characterized using various methods, such as X-ray diffraction (XRD), UV–Vis, Photoluminescence, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy. Indeed, the XRD and SEM analyses reveal that the hexagonal wurtzite CdS structure consists of uneven-sized sphere-like grains that are strongly interconnected with each other to form nanostructure with an average diameter of approximately 30 to 35 nm was observed distinctly. UV analysis reveal that the interaction of CdS nanoparticles with Mn has reduced the optical band gap of CdS from 2.31 to 2.42 eV and enhanced the charge carrier separation process. XPS spectra revealed the presence of Cd2+ and Mn2+ valence states in Mn-doped hexagonal wurtzite CdS. After that, studies on hydrogen production and photocatalytic dye degradation with methylene blue (MB) were conducted employing the photocatalyst. The 6% Mn-doped CdS outperformed the pristine CdS in terms of hydrogen generation activity when exposed to visible light from a solar simulator and exhibiting outstanding photocatalytic activity in the degradation of MB. The improved performance can be attributed to the enhanced light absorption capacity and efficient charge separation achieved through the introduction of Mn in CdS, which also functions as co-catalysts. This study paves the way for the development of low-cost yet highly efficient photocatalysts for the protection of environment as well as production of energy.
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VS, performed conceptualization, formal analysis. TA provided support for funding acquisition for the research work and contributed to the revision and editing of the manuscript. TK performed reviewing and editing the manuscript. SJR coordinating the research activity, including planning and data validation.
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Subha, V., Aravind, T., Kamatchi, T. et al. Investigations on effect of Mn doping on the photocatalytic properties CdS nanoparticles for effective degradation of organic pollutants and enhanced production of solar fuels. J Mater Sci: Mater Electron 35, 479 (2024). https://doi.org/10.1007/s10854-024-12268-2
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DOI: https://doi.org/10.1007/s10854-024-12268-2