Interfacial Stabilization and Geochemical Transformation of Antimony in Contaminated Soil Using a Ferrihydrite-Functionalized Biochar–Montmorillonite Composite - Rabia Safeer; Guijian Liu; Balal Yousaf; Aniqa Ashraf; Muhammad Irtaza Sajjad Haider; Samra Ijaz; Ruijia Liu (International Journal of Environmental Research, 2026)