A facile imine-linked covalent organic framework doped with a carbon dot composite for the detection and removal of Hg²⁺ in surface water.

ABSTRACT: Hg²⁺ is one of the most toxic chemical species in the water environment, and thus developing a new fluorescent covalent organic framework for both the detection and removal of Hg²⁺ is highly desirable. Herein, a fluorescent composite, termed TpPa-1 COF@CDs, was synthesized by inverse emulsion polymerization method using an imine covalent organic framework as the supporting material and carbon dots as the fluorescent sensor element. The crystallinity, porosity, rich functional receptors (hydroxyl and amino groups), thermal stability and fluorescent properties of TpPa-1 COF@CDs were characterized. The results showed that TpPa-1 COF@CDs exhibited a good detection and removal performance for Hg²⁺, which was evidenced by its high sensitivity (LOD = 0.75 μg L

SUBMITTER: Shili QIN 

PROVIDER: S-EPMC9237831 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature