Microbial–chemical synergy in the immobilization of cadmium in contaminated floodplain soils: A field-mesocosm assessment of Sporosarcina pasteurii and SiO₂ nanoparticles - Zhiguang Han; Jing Wang; Peiyuan Shang; Jianzhang Xiao; Junqiang Zheng (Journal of Hazardous Materials, 2026)