Smartphone-Enabled Fluorescence and Colorimetric Platform for the On-Site Detection of Hg²⁺ and Cl^- Based on the Au/Cu/Ti₃C₂ Nanosheets.

ABSTRACT: Smartphone-assisted fluorescence and colorimetric methods for the on-site detection of Hg²⁺ and Cl^- were established based on the oxidase-like activity of the Au-Hg alloy on the surface of Au/Cu/Ti₃C₂ NSs. The Au nanoparticles (NPs) were constructed via in-situ growth on the surface of Cu/Ti₃C₂ NSs and characterized by different characterization techniques. After the addition of Hg²⁺, the formation of Hg-Au alloys could promote the oxidization of o-phenylenediamine (OPD) to generate a new fluorescence emission peak of 2,3-diaminopenazine (ADP) at 570 nm. Therefore, a turn-on fluorescence method for the detection of Hg²⁺ was established. As the addition of Cl^- can influence the fluorescence of

SUBMITTER: Chen K 

PROVIDER: S-EPMC10386442 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature