Abstract
Pure, 3 mol% and 5 mol% Sr-doped cerium oxide nanoparticles were synthesized by facile aqueous co-precipitation method using cerium nitrate hexahydrate and strontium chloride hexahydrate as the precursors without using any capping agent. The synthesized material was characterized by XRD, SEM, EDX, TEM, Raman spectroscopy and UV–Vis spectroscopic techniques. SEM analysis showed agglomeration of the particles. The Debye–Scherrer analysis revealed fluorite structure of the synthesized material with crystallite size in 6–10 nm range. TEM confirmed the spherical morphology of the particles and particle size distribution in the range of 5–8 nm. UV–Vis spectroscopic study revealed that Sr-doping led to increase in the band gap from 3.2 to 3.7 eV and shifting of absorption edge to the lower wavelength. The blue shift in the band gap with the dopant concentration shows that the band gap of doped cerium oxide nanoparticles can be tuned with variation in the dopant concentration.
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The authors AK and AGS extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through research groups program under grant number RGP 1/49/39.
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Ali, S.R., Kumar, R., Kalam, A. et al. Effect of Strontium Doping on the Band Gap of \(\hbox {CeO}_{2}\) Nanoparticles Synthesized Using Facile Co-precipitation. Arab J Sci Eng 44, 6295–6302 (2019). https://doi.org/10.1007/s13369-018-03700-x
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DOI: https://doi.org/10.1007/s13369-018-03700-x