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Advances in Electrochemical Nanocomposites

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Applied Chemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 960

Special Issue Editors


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Guest Editor
Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-gun 55338, Jeollabuk-do, Republic of Korea
Interests: electrospinning; nanofibers; nanoparticles; photocatalysis; energy storage; graphene; composite; tissue engineering
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Special Issue Information

Dear Colleagues,

In recent years, interest in nanomaterials research has grown exponentially. The unique morphological features of nanomaterials include excellent electrical, optical, thermal, catalytic and mechanical properties, and ensure their applications in various fields. Therefore, nanomaterials are more efficient than their bulk counterparts. It has been found that when these nanomaterials are combined into an integrated system, the resulting composites perform better than a single material while maintaining the unique advantages of individual counterparts.

The design, synthesis and characterization of advanced nanomaterials/nanocomposites are promising for electrochemistry to offer high-performance devices. This Special Issue focuses on the most recent and significant developments in electrochemical applications of nanomaterials or their composites. Both original research articles and reviews are welcome for submission.

Potential topics include, but are not limited to, the following:

  • Synthesis and characterization of nanomaterials/composites for energy storage and convergence (batteries, supercapacitors, fuel cells, photovoltaic cells, etc.);
  • Nanocomposites for sensors;
  • Electrocatalysis;
  • Electrochemical properties of nanomaterials/nanocomposites.

Dr. Bishweshwar Pant
Dr. Gunendra Prasad Ojha
Guest Editors

Manuscript Submission Information

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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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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

  • nanomaterials
  • nanocomposites
  • electrocatalysis
  • electrochemical properties

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Published Papers (1 paper)

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Research

15 pages, 3125 KiB  
Article
The Graphene Oxide/Gold Nanoparticles Hybrid Layers for Hydrogen Peroxide Sensing—Effect of the Nanoparticles Shape and Importance of the Graphene Oxide Defects for the Sensitivity
by Krystian Pupel, Kacper Jędrzejewski, Sylwia Zoladek, Marcin Palys and Barbara Palys
Molecules 2025, 30(3), 533; https://doi.org/10.3390/molecules30030533 - 24 Jan 2025
Cited by 1 | Viewed by 714
Abstract
Graphene oxide (GO) and reduced graphene oxides (RGOs) show intrinsic electrocatalytic activity towards the electrocatalytic reduction of H2O2. Combining these materials with gold nanoparticles results in highly sensitive electrodes, with sensitivity in the nanomolar range because the electrocatalytic properties [...] Read more.
Graphene oxide (GO) and reduced graphene oxides (RGOs) show intrinsic electrocatalytic activity towards the electrocatalytic reduction of H2O2. Combining these materials with gold nanoparticles results in highly sensitive electrodes, with sensitivity in the nanomolar range because the electrocatalytic properties of GO and nanoparticles are synergistically enhanced. Understanding the factors influencing such synergy is crucial to designing novel catalytically active materials. In this contribution, we study gold nanostructures having shapes of nanospheres (AuNSs), nanourchins (AuNUs), and nanobowls (AuNBs) combined with GO or electrochemically reduced graphene oxide (ERGO). We investigate the amperometric responses of the hybrid layers to H2O2. The AuNUs show the highest sensitivity compared to AuNBs and AuNSs. All materials are characterized by electron microscopy and Raman spectroscopy. Raman spectra are deconvoluted by fitting them with five components in the 1000–1800 cm−1 range (D*, D, D”, G, and D′). The interaction between nanoparticles and GO is visualized by the relative intensities of Raman bands (ID/IG) and other parameters in the Raman spectra, like various D”, D* band positions and intensities. The ID/IG parameter is linearly correlated with the sensitivity (R2 = 0.97), suggesting that defects in the graphene structure are significant factors influencing the electrocatalytic H2O2 reduction. Full article
(This article belongs to the Special Issue Advances in Electrochemical Nanocomposites)
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