Post-Synthetic Modification of an Amino-Functionalized Metal-Organic Framework for Highly In Situ Luminescent Detection of Mercury (II).

ABSTRACT: A sulfur-containing metal-organic framework, donated as UiO-66-NSMe, was prepared by the post-synthetic modification (PSM) of UiO-66-NH₂ with 2-(Methylthio)benzaldehyde, and the successful synthesis of PSM was confirmed by X-ray photoelectron spectroscopy (XPS), FT-IR and ¹H NMR studies. According to the characteristics of mercury thiophilic, UiO-66-NSMe could be used as a luminescent sensor for Hg²⁺ detection with a high selectivity and sensitivity (K_sv = 2.5 × 10⁴ M^-1; LOD = 20 nM), which could be attributed to the coordination between sulfur sites and Hg²⁺ based on XPS results. In practical applications, UiO-66-NSMe yielded satisfactory recovery rates (ranging from 96.1% to 99.5%) when it was employed fo

SUBMITTER: Ji C 

PROVIDER: S-EPMC10610009 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature