Influence of pH variation on structural, optical, and superparamagnetic behavior of Ni-doped ZnO (X=0.02) using a solvothermal method

• Published in: Journal of the Indian Chemical Society 2023-02, Vol.100 (2), p.100874, Article 100874
• Main Authors: Devi, L Renuga, Sarathi, R., Sheeba, N.L., Esakki, E Selva, Meenakshi Sundar, S.
• Format: Article
• Language: English
• Subjects: Optical studies; Paramagnetic and superparamagnetic behavior; pH value; Solvothermal method; ZnO
• ISSN: 0019-4522
• DOI: 10.1016/j.jics.2022.100874

Zn1-xNixO nanoparticles at a concentration (2%) with pH variation (4, 5, 8 and 9) are successfully synthesized using the solvothermal method. ZnO nanoparticle has a hexagonal wurtzite structure when synthesized at acidic and basic conditions. In pH, the solution is calculated from 4 to 9 by the composed addition of NaOH and HCl. The structural properties are studied from XRD and TEM. The average particle size is found to be 13.2 nm using the Debye Scherrer formula and optical properties are analyzed through UV–Visible, FTIR, & PL. From the absorption spectra, it is observed that the bandgap energy is inversely proportional to the particle size. UV–Vis and PL are used to study the optical behavior of the samples. The magnetic behavior of Zn1-xNixO exhibit changing behavior from paramagnetic to superparamagnetic structure with increases in their pH values.