Spatiotemporally ordered topological transformation in layered double hydroxides enables synergistic mineralization of As^III/Cd².

ABSTRACT: The co-contamination of arsenite (As^III) and cadmium (Cd²⁺) poses a significant challenge in environmental remediation due to their divergent chemical speciation and transformation pathways. Here, a redox-active layered double oxide (MgMn-LDO) is designed, and achieves adsorption capacities of 821.7 mg g^‒1 for As^III and 1895.6 mg g^‒1 for Cd²⁺ in their coexisting system, presenting a state-of-the-art performance. Unexpectedly, the co-adsorption system not only enhances individual adsorption capacities but also accelerates the adsorption rate by 181‒fold compared to single-component systems. The LDO undergoes a four-stage spatiotemporally ordered topological transformation, which effectively decouples the oxidation of As^I

SUBMITTER: Zheng M 

PROVIDER: S-EPMC12905375 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature