Synthesis of Calixarene-Capped Silver Nanoparticles for Colorimetric and Amperometric Detection of Mercury (Hg^II, Hg⁰).

ABSTRACT: Calixarene-functionalized water dispersible silver nanoparticles have been synthesized and characterized on the basis of UV-vis, IR, X-ray diffraction, and high-resolution transmission electron microscopy analysis, and their sensing properties toward metal ions have been investigated. They selectively detect Hg²⁺ and Hg⁰ in solution and vapor phases, respectively, with distinct color change. Interference study with mixture of metal ions revealed no interference from any other metal ions used in this study. Their mechanism of detection involved Hg²⁺-aided displacement of calixarene moiety from the surface of the functionalized nanoparticles, followed by the formation of Ag-Hg amalgam due to interaction of Hg²⁺ with Ag⁰ and also the form

SUBMITTER: Vyas G 

PROVIDER: S-EPMC6648520 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature