Robust Synthesis of GO-PtNPs Nanocomposites: A Highly Selective Colorimetric Sensor for Mercury Ion (II) Detection.

ABSTRACT: Due to their high toxicity and ongoing bioaccumulation, mercury ions (Hg²⁺) can cause significant harm to both the environment and human health. Therefore, rapid, accurate, and selective methods for Hg²⁺ detection are highly desirable. Herein, we present a simple method for depositing platinum nanoparticles (PtNPs) on graphene oxide (GO) to obtain graphene oxide-PtNPs (GO-PtNPs). The fabricated GO-PtNPs exhibit excellent peroxidase-like activity and high stability. Further, the GO-PtNPs nanozymes preferentially reduced Hg²⁺, thereby inhibiting the catalytic activity. By monitoring the color change in the chromogenic substrate, Hg²⁺ can be detected within 15 min. With a detection limit of 88.3 pM, the GO-PtNPs system may be employed to detect Hg

SUBMITTER: Jia J 

PROVIDER: S-EPMC10701877 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature