Structure-modulated CaFe-LDHs with superior simultaneous removal of deleterious anions and corrosion protection of steel rebar.

ABSTRACT: The three anionic species; chloride (Cl^-), sulfate (SO₄ ^2-), and carbonate (CO₃ ^2-), are typical chemical factors that environmentally accelerate failure of concrete structures with steel rebar through long-term exposure. Efficient removal of these deleterious anions at the early stage of penetration is crucial to enhance the lifespan and durability of concrete structures. Here, we synthesize CaFe-layered double hydroxide (CaFe-LDHs) by a simple one-step co-precipitation technique and structural modulation by calcination process. It is applied for the removal of Cl^-, SO₄ ^2-, and CO₃ ^2- anions as well as corrosion inhibition on steel rebar in aqueous solutions. The synthesized CaFe-

SUBMITTER: Park JY 

PROVIDER: S-EPMC8695808 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature