Biomass-Derived Carbon Dots as Nanoprobes for Smartphone-Paper-Based Assay of Iron and Bioimaging Application.

ABSTRACT: A facile one-step carbonization approach is reported herein for the sustainable hydrothermal synthesis of fluorescent blue nitrogen-doped carbon quantum dots (NCQDs) using banana petioles obtained as biomass waste. These NCQDs were used to design a "turn-off" fluorescent probe, which exhibited excellent sensing capability toward the selective detection of micronutrient, Fe³⁺ ion, with a limit of detection (LOD) of 0.21 nM. The turn-off process involves the formation of a nonradiative charge transfer complex via a photoinduced electron transfer process. The sensor showed a linear range from 5 to 200 nM and was used for the estimation of Fe³⁺ ions in real plant samples. Further, a paper-based assay was developed for the quantitative estimation of Fe³⁺ with LO

SUBMITTER: Korram J 

PROVIDER: S-EPMC10468929 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature