Issues

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2022

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vol. 20 /

Issue 2

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Babu Nandana, Devadathan Dedhila, V. Baiju, and G. Sajeevkumar
NiAl₂O₄ Nanocomposite via Combustion Synthesis for Sustainable Environmental Remediation
0459–0472 (2022)

PACS numbers: 68.37.Hk, 78.30.-j, 78.40.-q, 81.07.-b, 81.16.Hc, 82.33.Vx, 82.50.Hp

In the present study, NiAl₂O₄ nanocomposite was synthesized using solution combustion method. The sample was annealed at three different temperatures (500°C, 700°C and 900°C) to study the variations in properties attained with annealing temperature. Structural characterizations of all the synthesized samples were carried out using XRD, SEM, EDAX and FTIR analysis. From XRD, the formed metal oxides were confirmed to be NiO/NiAl₂O₄ nanocomposite. Crystallite sizes of these oxides were calculated using Scherrer equation. FTIR also confirmed the structure of metal oxides. All three samples showed strong UV-Vis absorption that made them suitable candidate for photocatalytic degradation of organic dyes. The photocatalytic degradation activity of all three synthesized nanocomposites on acidic dye (Congo red) were studied and compared. Results confirm that proper tuning of these nanocomposites could improve their photocatalytic activity.

Key words: nanocomposites, solution combustion, nickel aluminate, photocatalytic activity, Congo red, acidic dye.

https://doi.org/10.15407/nnn.20.02.459

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