ArticleJournal of fluorescence2026
Enhanced Fluorescence and Fenton-reaction in Peroxidase Nanozyme of Functionalized Fe, N, S-Carbon Dots: H₂O₂-Induced Surface Oxidation and Detection using Conventional Turn-off and Smartphone-based Colorimetric Methods.
Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Peroxidase nanozymes and fluorophores have attracted considerable attention in catalysis and luminescence-based sensing applications. In this study, novel class of iron-, nitrogen-, and sulfur-functionalized carbon dots (Fe/N/S-CDs) featuring with inherent fluorescence and peroxidase-like activity were developed successfully via a facile hydrothermal approach. The Fe/N/S-CDs displayed strong blue fluorescence under UV irradiation with a high quantum yield of 44.5%. The incorporation of Fe active centers within the carbon framework and surface structure endowed Fe/N/S-CDs with efficient peroxidase-like activity toward hydrogen peroxide (H₂O₂) through a Fenton-like reaction, producing hydroxyl radicals (•OH). The generated •OH radicals induced surface oxidation of Fe/N/S-CDs, resulting in fluorescence quenching and enabling a selective "on-off" sensing mechanism. Structural and spectroscopic analyses confirmed H₂O₂-induced surface oxidation of Fe/N/S-CDs, accompanied by increased oxygen-containing functional groups, altered electronic structure, and sustained Fe²⁺/Fe³⁺ redox cycling. Based on this strategy, a dual-mode sensing platform integrating fluorometric detection and smartphone-assisted colorimetric analysis was developed for H₂O₂ monitoring. The proposed sensor achieved low detection limits of 3.55 µM and 8.99 µM for fluorometric and smartphone-based colorimetric detection, respectively. Wide linear ranges of 4-5000 µM for fluorometric analysis and 30-1000 µM for smartphone-based detection were obtained. The practical applicability of the sensing platform was evaluated using commercial and medical H₂O₂ samples, demonstrating excellent recovery values ranging from 98.9% to 104.8% with low RSDs. The integration of functionalized Fe/N/S-CD nanozymes with smartphone-based analysis establishes a robust dual-mode sensing platform that paves the way for accessible, reliable, and real-time chemical sensing in environmental, biomedical, and food safety applications.
Indexed as
Identifiers
42895614What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.