PVP-Directed MOF-Derived Fe–N–C Catalysts: Toward High-Performance and Sustainable PEM Fuel Cell Cathodes. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 27, n. 1, p. 617696ap, 2026. DOI: 10.21743/pjaec/2026/617696ap. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/617. Acesso em: 13 jul. 2026.