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Gels
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Gel Electro-Catalysts
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Gel Electro-Catalysts

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Processing and Engineering".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 2131

Special Issue Editors

Prof. Dr. Jamal Uddin

E-Mail Website
Guest Editor
Department of Natural Sciences, Coppin State University, Baltimore, MD 21216, USA
Interests: nanomaterials; material science; nanostructures; nanotechnololgy
Prof. Dr. Mohammed Muzibur Rahman

E-Mail Website
Guest Editor
Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Interests: nanocomposites; nanomaterials; sensors; catalysis; detection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue on “Gels Electro-Catalysts” is dedicated to recent approaches, developments, and applications of theoretical and fundamental aspects of the preparation, characterization, properties, and significant applications of electrolytic gels, hydrogels, aerogels, microgels, and organogels.

The electrochemical and optical properties of developed gels dramatically change in response to electrochemical fields, and they have attracted considerable attention in the past few decades. Recently, electro-catalyst gels have been used for healthcare, environmental and industrial purposes, leveraging their excellent response to electrochemical fields. They also find applications in ionic separation, drug release and delivery, chemical response, electrochemical sensors, immunoassays, bioassays, and cationic or anionic approaches.

Contributions based on the nanomaterial sciences, nanotechnology, and polymer technology are most welcome. The publication of original research articles, rapid communications, or reviews in this Special Issue will make an important contribution to the development of future gel electro-catalysts.

Prof. Dr. Jamal Uddin
Prof. Dr. Mohammed Muzibur Rahman
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Gels 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 2100 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

  • electrochemistry
  • gels
  • nanomaterials
  • detection
  • separation
  • catalysis
  • nanomedicine
  • 3D structures
  • devices
  • hydro-gels
  • conducting polymers
  • sensing
  • drug release and delivery
  • response

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Published Papers (1 paper)

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Research

18 pages, 11671 KiB  
Article
Molten Salts Approach of Poly(vinyl alcohol)-Derived Bimetallic Nickel–Iron Sheets Supported on Porous Carbon Nanosheet as an Effective and Durable Electrocatalyst for Methanol Oxidation
by Badr M. Thamer, Meera Moydeen Abdul Hameed and Mohamed H. El-Newehy
Gels 2023, 9(3), 238; https://doi.org/10.3390/gels9030238 - 17 Mar 2023
Cited by 4 | Viewed by 1846
Abstract
The preparation of metallic nanostructures supported on porous carbon materials that are facile, green, efficient, and low-cost is desirable to reduce the cost of electrocatalysts, as well as reduce environmental pollutants. In this study, a series of bimetallic nickel–iron sheets supported on porous [...] Read more.
The preparation of metallic nanostructures supported on porous carbon materials that are facile, green, efficient, and low-cost is desirable to reduce the cost of electrocatalysts, as well as reduce environmental pollutants. In this study, a series of bimetallic nickel–iron sheets supported on porous carbon nanosheet (NiFe@PCNs) electrocatalysts were synthesized by molten salt synthesis without using any organic solvent or surfactant through controlled metal precursors. The as-prepared NiFe@PCNs were characterized by scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction, and photoelectron spectroscopy (XRD and XPS). The TEM results indicated the growth of NiFe sheets on porous carbon nanosheets. The XRD analysis confirmed that the Ni1−xFex alloy had a face-centered polycrystalline (fcc) structure with particle sizes ranging from 15.5 to 30.6 nm. The electrochemical tests showed that the catalytic activity and stability were highly dependent on the iron content. The electrocatalytic activity of catalysts for methanol oxidation demonstrated a nonlinear relationship with the iron ratio. The catalyst doped with 10% iron showed a higher activity compared to the pure nickel catalyst. The maximum current density of Ni0.9Fe0.1@PCNs (Ni/Fe ratio 9:1) was 190 mA/cm2 at 1.0 M of methanol. In addition to the high electroactivity, the Ni0.9Fe0.1@PCNs showed great improvement in stability over 1000 s at 0.5 V with a retained activity of 97%. This method can be used to prepare various bimetallic sheets supported on porous carbon nanosheet electrocatalysts. Full article
(This article belongs to the Special Issue Gel Electro-Catalysts)
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