Magnetic relaxation switching assay based on three-dimensional assembly of Fe₃O₄@ZIF-8 for detection of cadmium ions.

ABSTRACT: The design and construction of a novel magnetic resonance switch (MRS) sensor for cadmium ion (Cd²⁺) detection is described. Fe₃O₄@ZIF-8 was synthesized through seed-mediated growth of dimercaptosuccinic acid-coated Fe₃O₄. Fe₃O₄@ZIF-8 with high relaxation value (163.086 mM^-1 s^-1) and large negative zeta potential (-20.69 mV) exhibited good magnetic relaxation performance and water solubility. The successfully synthesized Fe₃O₄@ZIF-8 was used to develop an immune recognition-based MOFs-MRS sensor for highly sensitive detection of Cd²⁺. The proposed MRS detected a wide linear range of Cd²⁺ concentration from 2 to 200 ng mL^-1 with a low limi

SUBMITTER: Xu Z 

PROVIDER: S-EPMC9437709 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature