Rapid and deep diesel desulfurization using bimetallic Cu-Fe/TiO2 nano-photocatalysts optimized by response surface methodology - Hayyiratul Fatimah Mohd Zaid; Mohd Faridzuan Majid; Nur Ain Atiqah Mohd Amin; Siti Musliha Mat Ghani (Next Nanotechnology, 2026)