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This research was funded by the Spanish Ministerio de Ciencia e Innovacion (PID2022-142262OA-I00 and TED2021-129738B-I00).

Analysis of institutional authors

Martinez-Perinan, EmilianoCorresponding AuthorLorenzo, EncarnacionAuthorGutierrez-Sanchez, CristinaCorresponding Author

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July 7, 2025
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Sensitive Hydrogen Peroxide Sensor Based on Hexacyanoferrate Nickel-Carbon Nanodots

Publicated to:CHEMOSENSORS 13 (6): 195- - 2025-05-22 13(6), DOI: 10.3390/chemosensors13060195

Authors: Martinez-Perinan, Emiliano; Hernandez-Gomez, Juan Manuel; Lorenzo, Encarnacion; Gutierrez-Sanchez, Cristina

Affiliations

Ciudad Universitaria Cantoblanco, IMDEA Nanociencia, Madrid 28049, Spain - Author
Univ Autonoma Madrid, Dept Quim Analit & Anal Instrumental, Madrid 28049, Spain - Author
Univ Autonoma Madrid, Inst Adv Res Chem Sci IAdChem, Madrid 28049, Spain - Author

Abstract

An electrochemical sensor was developed for the detection of hydrogen peroxide (H2O2) based on the in situ formation of a nickel hexacyanoferrate complex on the electrode surface. Screen-printed carbon electrodes were modified with nickel-doped carbon nanodots (Ni-CNDs), and a nickel hexacyanoferrate complex was electrogenerated over the nickel carbon nanodots. Ni-CNDs were synthetized "a la carte" in one step by including nickel (II) acetate as precursor and characterized using different techniques: transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy, atomic force microscopy (AFM), and infrared spectroscopy (FTIR). The electrocatalytic activity toward H2O2 reduction and the oxidation of the resulting modified electrodes was studied. The developed sensor had a strong electrocatalytic effect on the oxidation and reduction of H2O2, yielding detection limits of 3.22 and 0.49 mu M, respectively. The H2O2 content of a tap water sample was determined, confirming the viability of the developed electrochemical sensor.

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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-26:

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    Leadership analysis of institutional authors

    There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (MARTINEZ PERIÑAN, EMILIANO) and Last Author (GUTIERREZ SANCHEZ, MARIA CRISTINA).

    the authors responsible for correspondence tasks have been MARTINEZ PERIÑAN, EMILIANO and GUTIERREZ SANCHEZ, MARIA CRISTINA.