Answers are grounded in this paper and cite their sources.
Demonstrates enhanced wastewater treatment using a Fe3O4/ZnO composite derived from waste, suggesting sustainable remediation methods.
This study presents a novel and sustainable precipitation method for synthesis of Fe_3O_4 /ZnO composite powder directly from corrugated galvanised iron (CGI) waste, addressing gaps in waste-derived catalysts for advanced oxidation processes. XRD characterisation revealed that the Fe_3O_4 /ZnO powder contains the dominant Fe_3O_4 (magnetite) crystalline phase with minor amount of ZnO phase. FTIR spectroscopy verified Fe-O (571 cm−1) and Zn-O (450-500 cm⁻¹ ) bonds, while XPS confirmed coexistence of Fe²⁺ / Fe³⁺ (710/724 eV) and Zn²⁺ (1022/1045 eV) cations essential for redox cycling. The composite powder showed irregular, agglomerated morphology (SEM/TEM, 20-150 nm particles), mesoporosity (BET 22.69 m^ {2} /g, Type IV isotherm) and superparamagnetic properties (Ms ≈ 51 emu/g). Preliminary Fenton-like tests achieved 85.47% methylene blue (MB) degradation in 60min (first-order reaction, k = 0.024 min⁻¹ ) via •OH generation, with >93% efficiency over 4 reuse cycles and facile magnetic separation. This reinforces waste valorisation for sustainable wastewater treatment, demonstrating a synergistic effect at the Fe_3O_4 /ZnO interface for scalable environmental remediation.
No takes yet. Share an insight, caveat, or question.
Zuas et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: