Abstract
Size-tunable nanoparticles (NPs) for pristine cadmium sulfide (CdS) and iron (Fe)-doped (5, 10 and 15%) CdS were synthesized using facile chemical co-precipitation. Size-controlled NPs were prepared with thioglycolic acid (TGA) as the capping agent and their structural, optical, morphological and physiochemical evaluations were performed using X-ray diffraction (XRD), UV–visible spectroscopy, Raman spectroscopy, field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR). XRD revealed single cubic phase of CdS and later broader peaks upon mixing of Fe, and intensive absorption was recorded in the visible regime upon doping with redshift. FESEM confirmed spherical nanoparticles of Fe–CdS, and Cd–S linkage along with other functional groups was recognized by FTIR. Cd1−xFexS (x = 0, 0.05, 0.10 and 0.15) powder was used as the photocatalyst for methylene blue (MB) degradation in visible light and catalyst in NaBH4’s presence. The control CdS bleached MB faster than doped but doped CdS showed higher catalytic degradation. The Fe-doped CdS NPs showed superior catalytic potential compared to undoped CdS which suggests their use in dye industries, especially leather and tanneries. Additionally, NPs not only show superior catalytic characteristics but also help in cost reduction and complete removal of dyes for wastewater management.
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Acknowledgements
This work is supported by higher education commission (HEC), Pakistan, through start research project no. 21-1669/SRGP/R&D/HEC/2017 and CAS-TWAS President’s Fellowship for international PhD students, China.
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Junaid, M., Imran, M., Ikram, M. et al. The study of Fe-doped CdS nanoparticle-assisted photocatalytic degradation of organic dye in wastewater. Appl Nanosci 9, 1593–1602 (2019). https://doi.org/10.1007/s13204-018-0933-3
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DOI: https://doi.org/10.1007/s13204-018-0933-3