Background: In this work, nickel oxide nanoparticles were prepared by polyol mediated aqueous route of sol-gel process using nickel nitrate hexahydrate as precursor, a mixture of isopropyl alcohol and water as solvent and glycerol for making polyol medium followed by calcination at various temperatures ranging from 500 to 900 °C. Characterization was carried out using X-ray diffractometry, infrared spectroscopy, differential scanning calorimetry-thermogravimetry and field emission scanning electron microscopy.

Results: The results confirmed the formation of face-cantered cubic structure of nickel oxide with its complete conversion after calcination at 900 °C; significant variation in the surface morphology was observed with the increasing calcination temperature.

Conclusions: The study revealed that the aqueous sol-gel route using polyol system followed by calcination at ambient temperatures lead to the successful synthesis of nickel oxide nanoparticles.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9703758PMC
http://dx.doi.org/10.1186/s13065-022-00898-8DOI Listing

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