Targeted Selenite Adsorption Using Defective Fe-BTC: Effective in Acidic and Alkaline Conditions.

ABSTRACT: Amorphous Fe-BTC, characterized by entirely defective metal nodes, has been employed for the effective adsorption of toxic selenite anions from aqueous solutions. Remarkably, Fe-BTC maintains high adsorption efficiency across a broad pH range (2-12), achieving a maximum adsorption capacity of 491 mg g^-1, ranking among the highest recorded for adsorbents, including MOFs. The adsorption process involves distinct chemical interactions depending on pH: weak and variable interactions under acidic conditions (pH 2) and strong, diverse coordination modes under alkaline conditions (pH 11). Notably, the strong coordination ability of selenite ensures high selectivity over selenate and competing anions such as Cl^-, NO₂ ^-, NO₃ ^-, CO

SUBMITTER: Byun A 

PROVIDER: S-EPMC12444837 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature