Special Issue "Carbon-Based Materials and Their Electrochemical Applications"

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: closed (18 June 2019).

Special Issue Editor

Prof. KSV Santhanam
E-Mail Website
Guest Editor
Chemistry and Materials Science and Engineering, Rochester Institute of Technology, USA
Interests: graphene electrochemistry; carbon nanotubes sensors; graphene/carbon nanotubes metal composites

Special Issue Information

Dear Colleagues,

In the periodic table, carbon, as an element, stands out as important from the standpoint of our existence on this planet as the compounds in our body are carbon-based, as much as our energy storage systems. It exists in attractive allotropic forms, such as graphite, diamond and bucky balls. The use of graphite in the present technological world is growing steadily; with the discovery of graphene which is a 2D material derived from graphite, the importance of carbon has rocketed sky-high. The special issue will focus on carbon-based materials.

The scope of this special issue is to focus on all areas of carbon-based materials in electrochemical applications. Examples include: Graphitic electrodes stemming from artificial graphite to synthetic graphite, glassy carbon, vitreous carbon, single walled and multiwalled carbon nanotubes, graphene, graphene quantum dots, carbon paste and carbon composites.

With rapid advancements occurring in different areas of electrochemistry, such as batteries and dissolved redox flow batteries, sensors, bioelectrochemistry, electroanalytical chemistry, corrosion, electrocatalysis and spectroelectrochemistry, the field of electrochemistry is expanding sky high to address the needs of our society. This Special Issue will also address all related areas of carbon-based materials with specific applications to electron transfer processes that would help the growth of materials chemistry and engineering.

Prof. KSV Santhanam
Guest Editor

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 papers will be 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. ChemEngineering is an international peer-reviewed open access quarterly 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 1000 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

  • graphene
  • graphene quantum dots
  • carbon nanotubes
  • energy storage systems and sensors

Published Papers (4 papers)

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Research

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Open AccessArticle
Corrosion Protection of Monel Alloy Coated with Graphene Quantum Dots Starts with a Surge
ChemEngineering 2019, 3(4), 80; https://doi.org/10.3390/chemengineering3040080 - 30 Sep 2019
Abstract
There has been an active interest in protecting metals and alloys using graphene coating. The mechanism by which corrosion protection occurs has not been well understood as the couple involved are both good electron conductors. In this work, we demonstrate that Monel alloy [...] Read more.
There has been an active interest in protecting metals and alloys using graphene coating. The mechanism by which corrosion protection occurs has not been well understood as the couple involved are both good electron conductors. In this work, we demonstrate that Monel alloy coated with graphene quantum dots (GQD) changes the corrosion rate with a surge (increase) caused by the galvanic coupling of the two materials. This surge results in the protective layer formation on Monel to inhibit the corrosion. X-ray fluorescence spectrum of Monel (400) alloy showed the composition of it as Ni (67.05%) and Cu (29.42%). The Tafel experiments carried out in NaCl and Na2SO4 electrolytes showed an initial enhancement of the corrosion rate followed by a decrease upon successive polarizations. Monel coated with graphene oxide (an insulator) shows no initial enhancement of corrosion rate; the coated samples showed a lower corrosion rate in comparison to the uncoated samples. X-ray fluorescence, Fourier Transform spectroscopy (FTIR) and Raman imaging studies have been carried out for understanding this transformation. Distinct peaks due to Ni-O stretching and Ni-O-H bending vibration were observed in the FTIR spectrum. Full article
(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)
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Open AccessArticle
Electrochemical Carbon Dioxide Reduction in Methanol at Cu and Cu2O-Deposited Carbon Black Electrodes
ChemEngineering 2019, 3(1), 15; https://doi.org/10.3390/chemengineering3010015 - 08 Feb 2019
Abstract
The electrochemical reduction of carbon dioxide in methanol was investigated with Cu and Cu2O-supported carbon black (Vulcan XC-72) nanoparticle electrodes. Herein, Cu or a Cu2O-deposited carbon black catalyst has been synthesized by the reduction method for a Cu ion, [...] Read more.
The electrochemical reduction of carbon dioxide in methanol was investigated with Cu and Cu2O-supported carbon black (Vulcan XC-72) nanoparticle electrodes. Herein, Cu or a Cu2O-deposited carbon black catalyst has been synthesized by the reduction method for a Cu ion, and the drop-casting method was applied for the fabrication of a modified carbon black electrode. A catalyst ink solution was fabricated by dispersing the catalyst particles, and the catalyst ink was added onto the carbon plate. The pH of suspension was effective for controlling the Cu species for the metallic copper and the Cu2O species deposited on the carbon black. Without the deposition of Cu, only CO and methyl formate were produced in the electrochemical CO2 reduction, and the production of hydrocarbons could be scarcely observed. In contrast, hydrocarbons were formed by using Cu or Cu2O-deposited carbon black electrodes. The maximum Faraday efficiency of hydrocarbons was 40.3% (26.9% of methane and 13.4% of ethylene) at −1.9 V on the Cu2O-deposited carbon black catalyst. On the contrary, hydrogen evolution could be depressed to 34.7% under the condition. Full article
(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)
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Open AccessArticle
Modeling of Copper Adsorption on Mesoporous Carbon CMK-3: Response Surface Design
ChemEngineering 2018, 2(4), 49; https://doi.org/10.3390/chemengineering2040049 - 14 Oct 2018
Abstract
CMK-3 mesoporous carbon was nanocast from SBA-15 silica. The obtained carbon was characterized by nitrogen sorption isotherms, X-ray diffraction and transmission electron microscopy (TEM). The batch adsorption tests were done at constant pH taking into account the initial metal ion concentration, adsorbent mass [...] Read more.
CMK-3 mesoporous carbon was nanocast from SBA-15 silica. The obtained carbon was characterized by nitrogen sorption isotherms, X-ray diffraction and transmission electron microscopy (TEM). The batch adsorption tests were done at constant pH taking into account the initial metal ion concentration, adsorbent mass and temperature. A statistical study using a response surface design method was done to develop a mathematical model to predict copper adsorption on CMK-3 as a function of the mentioned experimental factors. It was found that all these parameters are significant, and copper concentration has the greatest effect on adsorption among them. Moreover, the obtained model proved to be adequate in predicting copper adsorption on CMK-3 and its performance under different experimental conditions. Full article
(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)
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Review

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Open AccessReview
Greenhouse Gas Sensors Fabricated with New Materials for Climatic Usage: A Review
ChemEngineering 2018, 2(3), 38; https://doi.org/10.3390/chemengineering2030038 - 24 Aug 2018
Cited by 1
Abstract
With the increasing utilization of fossil fuels in today’s technological world, the atmosphere’s concentration of greenhouse gases is increasing and needs to be controlled. In order to achieve this goal, it is imperative to have sensors that can provide data on the greenhouse [...] Read more.
With the increasing utilization of fossil fuels in today’s technological world, the atmosphere’s concentration of greenhouse gases is increasing and needs to be controlled. In order to achieve this goal, it is imperative to have sensors that can provide data on the greenhouse gases in the environment. The recent literature contains a few publications that detail the use of new methods and materials for sensing these gases. The first part of this review is focused on the possible effects of greenhouse gases in the atmosphere, and the second part surveys the developments of sensors for greenhouse gases with coverage on carbon nano-materials and composites directed towards sensing gases like CO2, CH4, and NOx. With carbon dioxide measurements, due consideration is given to the dissolved carbon dioxide gas in water (moisture). The density functional calculations project that Pd-doped single-walled carbon nanotubes are ideal for the development of NOx sensors. The current trend is to make sensors using 3D printing or inkjet printing in order to allow for the achievement of ppb levels of sensitivity that have not been realized before. This review is to elaborate on the need for the development of greenhouse gas sensors for climatic usage by using selected examples. Full article
(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)
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