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Nanomaterials
Special Issues
Application of Functionalized Two-Dimensional Nanomaterials in Energy Storage and Catalysis
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Application of Functionalized Two-Dimensional Nanomaterials in Energy Storage and Catalysis

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (10 December 2022) | Viewed by 4346

Special Issue Editor

Prof. Dr. Yunyong Li

E-Mail Website
Guest Editor
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
Interests: synthesis and assembly of graphene and graphene-based composites; MXene-based hybrids; micro-/nano-structured two dimensional composites; nano-electrochemical energy storage materials and electrocatalysts

Special Issue Information

Dear Colleagues,

Graphene, as the thinnest and strongest nanomaterial, has an extreme attraction in the application fields of energy storage and catalysis owing to its exceptionally physical and chemical properties. Nevertheless, its weak electrochemical activity, poor hydrophobicity, easy agglomeration, and difficult processing greatly limit the application of graphene. Therefore, functional modifications and self-assembly of graphene can effectively modify the surface physical and chemical properties of graphene and avoid the agglomeration of graphene, thus greatly expanding their practical application in energy storage and catalysis. Further, the self-assembly of functionalized graphene can also fabricate unique structures and properties, which is attractive in energy storage and catalysis.

Topics in the Special Issue on “Self-Assembly and Application of Functionalized Graphene in Energy Storage and Catalysis” mainly focus on the self-assembly synthesis and design of functionalized graphene and their application in energy storage and catalysis. The main aim is to acquire a scientific understanding for the design and application of unique structures and properties of functionalized graphene and graphene-based composites by the introduction of advanced self-assembly synthesis method and techniques.

The research topics of the present Special Issue include but are not limited to the following subjects:

  • Design and synthesis of functionalized graphene and its composites;
  • Surface modifications and functionalization procedures of graphene;
  • Self-assembly of functionalized graphene;
  • Application of functionalized graphene in advanced energy storage and catalysis (e.g., rechargeable batteries, supercapacitors);
  • Functionalized graphene-based composites in energy storage and catalysis.

We are pleased to invite you to submit a manuscript to this Special Issue, which provides an excellent opportunity to publish your latest advances in the relevant research fields. In the Special Issue, full papers, communications, and reviews are welcome. We look forward to your contributions and fruitful discussions.

Prof. Dr. Yunyong Li
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 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. Nanomaterials 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 2900 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

  • Functionalized graphene
  • Self-assembly
  • Surface modifications
  • Graphene-based composites
  • Rechargeable batteries
  • Supercapacitors
  • Energy storage
  • Catalysis
  • Photocatalysis

Published Papers (3 papers)

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Research

14 pages, 3363 KiB  
Article
One-Step Solvothermal Synthesis by Ethylene Glycol to Produce N-rGO for Supercapacitor Applications
by Mohammad Obaidur Rahman, Nursyarizal Bin Mohd Nor, Narinderjit Singh Sawaran Singh, Surajudeen Sikiru, John Ojur Dennis, Muhammad Fadhlullah bin Abd. Shukur, Muhammad Junaid, Ghulam E. Mustafa Abro, Muhammad Aadil Siddiqui and Md Al-Amin
Nanomaterials 2023, 13(4), 666; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13040666 - 08 Feb 2023
Cited by 1 | Viewed by 1842
Abstract
Graphene and its derivatives have emerged as peerless electrode materials for energy storage applications due to their exclusive electroactive properties such as high chemical stability, wettability, high electrical conductivity, and high specific surface area. However, electrodes from graphene-based composites are still facing some [...] Read more.
Graphene and its derivatives have emerged as peerless electrode materials for energy storage applications due to their exclusive electroactive properties such as high chemical stability, wettability, high electrical conductivity, and high specific surface area. However, electrodes from graphene-based composites are still facing some substantial challenges to meet current energy demands. Here, we applied one-pot facile solvothermal synthesis to produce nitrogen-doped reduced graphene oxide (N-rGO) nanoparticles using an organic solvent, ethylene glycol (EG), and introduced its application in supercapacitors. Electrochemical analysis was conducted to assess the performance using a multi-channel electrochemical workstation. The N-rGO-based electrode demonstrates the highest specific capacitance of 420 F g−1 at 1 A g−1 current density in 3 M KOH electrolyte with the value of energy (28.60 Whkg−1) and power (460 Wkg−1) densities. Furthermore, a high capacitance retention of 98.5% after 3000 charge/discharge cycles was recorded at 10 A g−1. This one-pot facile solvothermal synthetic process is expected to be an efficient technique to design electrodes rationally for next-generation supercapacitors. Full article
(This article belongs to the Special Issue Application of Functionalized Two-Dimensional Nanomaterials in Energy Storage and Catalysis)
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12 pages, 5720 KiB  
Article
Janus Type Monolayers of S-MoSiN2 Family and Van Der Waals Heterostructures with Graphene: DFT-Based Study
by Ruslan M. Meftakhutdinov and Renat T. Sibatov
Nanomaterials 2022, 12(21), 3904; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12213904 - 05 Nov 2022
Cited by 1 | Viewed by 1488
Abstract
Novel representative 2D materials of the Janus type family X-M-ZN2 are studied. These materials are hybrids of a transition metal dichalcogenide and a material from the MoSi2N4 family, and they were constructed and optimized from the MoSi2N [...] Read more.
Novel representative 2D materials of the Janus type family X-M-ZN2 are studied. These materials are hybrids of a transition metal dichalcogenide and a material from the MoSi2N4 family, and they were constructed and optimized from the MoSi2N4 monolayer by the substitution of SiN2 group on one side by chalcogen atoms (sulfur, selenium, or tellurium), and possibly replacing molybdenum (Mo) to tungsten (W) and/or silicon (Si) to germanium (Ge). The stability of novel materials is evaluated by calculating phonon spectra and binding energies. Mechanical, electronic, and optical characteristics are calculated by methods based on the density functional theory. All considered 2D materials are semiconductors with a substantial bandgap (>1 eV). The mirror symmetry breaking is the cause of a significant built-in electric field and intrinsic dipole moment. The spin–orbit coupling (SOC) is estimated by calculations of SOC polarized bandstructures for four most stable X-M-ZN2 structures. The possible van der Waals heterostructures of considered Janus type monolayers with graphene are constructed and optimized. It is demonstrated that monolayers can serve as outer plates in conducting layers (with graphene) for shielding a constant external electric field. Full article
(This article belongs to the Special Issue Application of Functionalized Two-Dimensional Nanomaterials in Energy Storage and Catalysis)
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15 pages, 8478 KiB  
Article
Spectral and Structural Properties of High-Quality Reduced Graphene Oxide Produced via a Simple Approach Using Tetraethylenepentamine
by Abedalkader Alkhouzaam, Haneen Abdelrazeq, Majeda Khraisheh, Fares AlMomani, Bassim H. Hameed, Mohammad K. Hassan, Mohammad A. Al-Ghouti and Rengaraj Selvaraj
Nanomaterials 2022, 12(8), 1240; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12081240 - 07 Apr 2022
Cited by 7 | Viewed by 1857
Abstract
A simple temperature-assisted solution interaction technique was used to functionalize and reduce graphene oxide (GO) using tetraethylenepentamine (TEPA) with less chemicals, low temperature, and without using other reducing agents. GO nanosheets, produced using a modified Hummers’ method, were functionalized using two different GO:TEPA [...] Read more.
A simple temperature-assisted solution interaction technique was used to functionalize and reduce graphene oxide (GO) using tetraethylenepentamine (TEPA) with less chemicals, low temperature, and without using other reducing agents. GO nanosheets, produced using a modified Hummers’ method, were functionalized using two different GO:TEPA ratios (1:5 and 1:10). The reduction of GO was evaluated and confirmed by different spectroscopic and microscopic techniques. The FTIR and XPS spectra revealed that most of the oxygenated groups of GO were reduced. The emergence of amide groups in the XPS survey of the rGO-TEPA samples confirmed the successful reaction of TEPA with the carboxyl groups on the edges of GO. The replacement of the oxygenated groups increased the carbon/oxygen (C/O) ratio of GO by approximately 60%, suggesting a good reduction degree. It was found that the I2D/ID+D′ ratio and the relative intensity of the D″ band clearly increased after the reduction reaction, suggesting that these bands are good estimators for the reduction degree of GO. The morphological structure of GO was also affected by the reaction with TEPA, which was confirmed by SEM and TEM images. The TEM images showed that the transparent GO sheets became denser and opaque after functionalization with TEPA, indicating an increase in the stacking level of the GO sheets. This was further confirmed by the XRD analysis, which showed a clear decrease in the d-spacing, caused by the removal of oxygenated groups during the reduction reaction. Full article
(This article belongs to the Special Issue Application of Functionalized Two-Dimensional Nanomaterials in Energy Storage and Catalysis)
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