The Systematic Correlation Between Synthesis Parameters and the Particle Size of Nickel Oxide Nanocatalysts Prepared by the Sol–Gel Method. East Eur. J. Phys. [Internet]. 2026 Jun. 10 [cited 2026 Oct. 25];(2):156-61. Available from: https://periodicals.karazin.ua/eejp/article/view/27369