Biosensors Based on Electrochemical Catalysis, Biofuels, or Functional Nanomaterials

A special issue of Biosensors (ISSN 2079-6374). This special issue belongs to the section "Biosensor Materials".

Deadline for manuscript submissions: 20 September 2026 | Viewed by 753

Special Issue Editors


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Guest Editor
School of Public Health, Nantong University, Nantong 226019, China
Interests: biosensors
School of Public Health, Nantong University, Nantong 226019, China
Interests: electrochemistry; electrochemiluminescence; biosensors; immunoassay; nanomaterials
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Special Issue Information

Dear Colleagues,

The first decade of the 21st century has been labeled as “the sensing decade”. Among the various sensing types, biosensing is currently one of the hottest topics in bioanalysis. Nowadays, biosensors have become a valuable tool in a number of applications, encompassing the monitoring of treatment and progression of diseases, environmental monitoring, food safety concern, drug development, forensics, and biomedical research. Among them, biosensors based on electrochemical catalysis, biofuels, and functional nanomaterials constitute a pivotal component and have garnered escalating attention. For instance, electrochemical catalysis-based biosensors play a significant role in point-of-care testing diagnostics because they are rapid, cost-effective, suitable for miniaturization, intelligent, and capable of working in real time. Biofuel cells have been applied as the basic component for constructing self-powered electrochemical biosensors, while the unique properties of nanomaterials offer excellent platforms for electronic and optical signal transduction, allowing us to design a new generation of biosensing devices.

Hence, this Special Issue, “Biosensors Based on Electrochemical Catalysis, Biofuels, or Functional Nanomaterials”, focuses on the recent advances in biosensors, including sensitivity amplification strategies, point-of-care diagnostics, nanotechnology, and their applications in the detection and discovery of markers. We welcome submissions of research that contributes to the advancement of the field regarding electrochemical catalysis, biofuels, and functional nanomaterials, as well as their diverse applications.

Prof. Dr. Haiwei Ji
Dr. Jinxia Liu
Guest Editors

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Biosensors is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biosensors
  • electrochemical catalysis
  • biofuels
  • functional nanomaterials
  • biomarkers
  • signal amplification
  • environmental monitoring
  • forensics

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Published Papers (1 paper)

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Research

17 pages, 6009 KB  
Article
Sensitive and Selective Electrochemical Detection of Hydrogen Peroxide Using a Silver-Incorporated CeO2/Ag2O Nanocomposite
by Gunasekaran Manibalan, Govindhasamy Murugadoss, Dharmalingam Krishnamoorthy, Venkataraman Dharuman and Shaik Gouse Peera
Biosensors 2025, 15(9), 617; https://doi.org/10.3390/bios15090617 - 17 Sep 2025
Viewed by 496
Abstract
Precision and real-time detection of hydrogen peroxide (H2O2) are essential in pharmaceutical, industrial, and defence sectors due to its strong oxidizing nature. In this study, silver (Ag)-doped CeO2/Ag2O-modified glassy carbon electrode (Ag-CeO2/Ag2 [...] Read more.
Precision and real-time detection of hydrogen peroxide (H2O2) are essential in pharmaceutical, industrial, and defence sectors due to its strong oxidizing nature. In this study, silver (Ag)-doped CeO2/Ag2O-modified glassy carbon electrode (Ag-CeO2/Ag2O/GCE) has been developed as a non-enzymatic electrochemical sensor for the sensitive and selective detection of H2O2. The synthesized Ag-doped CeO2/Ag2O nanocomposite was characterized using various advanced techniques, including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), field-emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM). Their optical, magnetic, thermal, and chemical properties were further analyzed using UV–vis spectroscopy, electron paramagnetic resonance (EPR), thermogravimetric-differential thermal analysis (TG-DTA), and X-ray photoelectron spectroscopy (XPS). Electrochemical sensing performance was evaluated using cyclic voltammetry and amperometry. The Ag-CeO2/Ag2O/GCE exhibited superior electrocatalytic activity for H2O2, attributed to the increased number of active sites and enhanced electron transfer. The sensor displayed a high sensitivity of 2.728 µA cm−2 µM−1, significantly outperforming the undoped CeO2/GCE (0.0404 µA cm−2 µM−1). The limit of detection (LOD) and limit of quantification (LOQ) were found to be 6.34 µM and 21.1 µM, respectively, within a broad linear detection range of 1 × 10−8 to 0.5 × 10−3 M. The sensor also demonstrated excellent selectivity with minimal interference from common analytes, along with outstanding storage stability, reproducibility, and repeatability. Owing to these attributes, the Ag-CeO2/Ag2O/GCE sensor proved effective for real sample analysis, showcasing its potential as a reliable, non-enzymatic platform for H2O2 detection. Full article
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