Hydrothermal synthesis of ZnO nanoparticles from recycled ZnO obtained from electric Arc furnace dust: morphology control and applications.

ABSTRACT: This study presents a sustainable, value-added approach to synthesizing high-quality zinc oxide nanoparticles (ZnO NPs) by utilizing ZnO recovered from industrial electric arc furnace dust (EAFD) waste. The integrated two-stage process involved selective acid leaching for precursor purification, followed by hydrothermal synthesis for morphology control. Optimized leaching using 2 M H₂SO₄ achieved a high zinc recovery rate of over 90% while effectively minimizing lead contamination. Subsequently, key hydrothermal parameters-including pH (7-12), temperature 100-200 °C, reaction time (1-24 h), and NaOH concentration (0.5-6 M)-were systematically varied. This optimization successfully produced ZnO NPs with diverse, tunable morphologies, including nanorods, nanoplates, and

SUBMITTER: Somla S 

PROVIDER: S-EPMC12936206 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature