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Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 20255

Special Issue Editors

Dr. Angela Longo

E-Mail Website
Guest Editor
Institute for Polymers, Composites, and Biomaterials, National Research Council, 80055 Portici, Italy
Interests: functional coatings based on advanced nanomaterials; graphene, graphene oxide and reduced graphene oxide; metal nanoparticles; inorganic/polymer nanocomposites; luminescent nanomaterials; optical characterization (ultraviolet–visible absorption and fluorescence spectroscopy); morphological characterization by scanning electron microscopy (SEM) and transmission electron microscopy (TEM); X-ray diffraction characterization
Special Issues, Collections and Topics in MDPI journals
Dr. Mariano Palomba

E-Mail Website
Guest Editor
Institute for Polymers, Composites, and Biomaterials, National Research Council, 80055 Portici, Italy
Interests: graphene; carbon-based materials; metal nanoparticles; inorganic/organic nanomaterials; metal-organic nanocomposites for biological applications; morphological characterization by scanning electron microscopy (SEM) and transmission electron microscopy (TEM); X-ray diffraction characterization; thermo-mechanical and structural characterization; electrical characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, graphene oxide (GO) and reduced graphene oxide (r-GO) have received a great deal of attention as precursors of graphene-like 2D layered nanomaterials. These materials have unique intrinsic physical and chemical properties, in addition to having a large surface area, functionality containing oxygen, good conductivity, and good biocompatibility. For this reason, many experimental studies have been conducted to improve GO and r-GO, and to analyze their possible application fields. Recently, there has been a growing number of intensive studies which address the preparation and characterization of new nanocomposites which integrate GO or r-GO (GO/r-GO) with polymers, inorganic nanoparticles (metal, metal oxide, etc.), or even nanotubes and fullerenes. These nanocomposite materials with novel nanostructures and integrated properties are receiving an increasing interest.

For example, GO/r-GO-based polymer nanocomposites are receiving remarkable interest due to their excellent mechanical, thermal, and electrical properties. GO/r-GO used as nanometric filler embedded in a polymeric matrix enhance the structural, morphological, and functional properties of the composite material. In addition, these materials are suitable for electronic and energy storage applications in the form of polymer–graphene composites.

Nanocomposites based on GO/r-GO and inorganic nanoparticles such as Au, Ag, Pt, etc. have attracted great attention for various applications as catalysts, photocatalysts, electrodes, sensors, substrates for surface-enhanced Raman spectroscopy, and biomedical applications. So, the development of new synthesis methods for GO/r-GO and nanoparticle composites with good control of size and morphology is necessary to obtain interesting devices.

In addition, the combination of GO/r-GO with different dimensions of carbon-based materials has shown superior performance in several cases; for example, a GO/r-GO and fullerenes system produced membranes with excellent structural stability.

In conclusion, the aim of this Special Issue is to extend our current knowledge about “Advanced Nanocomposite materials Based on Graphene Oxide/Reduced Graphene Oxide”, and it is our honor and pleasure to invite you to submit a manuscript. Original research papers, state-of-the-art reviews, communications, and discussions are welcomed.

Dr. Angela Longo
Dr. Mariano Palomba
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. Materials 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 2600 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

  • Synthesis of GO/r-GO nanocomposites
  • Structural and morphological properties
  • Optical and electrical properties
  • Functional properties
  • Electrical, optoelectronic, catalytic, biomedical, and H-storage applications

Published Papers (8 papers)

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Editorial

Jump to: Research, Review

3 pages, 180 KiB  
Editorial
Special Issue: Advanced Nanocomposite Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives
by Mariano Palomba and Angela Longo
Materials 2022, 15(24), 8983; https://doi.org/10.3390/ma15248983 - 15 Dec 2022
Viewed by 891
Abstract
In recent years, graphene oxide (GO) and reduced graphene oxide (r-GO) have received much attention as precursors of graphene-like 2D nanomaterials [...] Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)

Research

Jump to: Editorial, Review

11 pages, 5018 KiB  
Article
Magnetite Nanoparticles In-Situ Grown and Clustered on Reduced Graphene Oxide for Supercapacitor Electrodes
by Yue Jiang, Jinxun Han, Xiaoqin Wei, Hanzhuo Zhang, Zhihui Zhang and Luquan Ren
Materials 2022, 15(15), 5371; https://doi.org/10.3390/ma15155371 - 4 Aug 2022
Cited by 7 | Viewed by 1416
Abstract
Fe3O4 nanoparticles with average sizes of 3–8 nm were in-situ grown and self-assembled as homogeneous clusters on reduced graphene oxide (RGO) via coprecipitation with some additives, where RGO sheets were expanded from restacking and an increased surface area was obtained. [...] Read more.
Fe3O4 nanoparticles with average sizes of 3–8 nm were in-situ grown and self-assembled as homogeneous clusters on reduced graphene oxide (RGO) via coprecipitation with some additives, where RGO sheets were expanded from restacking and an increased surface area was obtained. The crystallization, purity and growth evolution of as-prepared Fe3O4/RGO nanocomposites were examined and discussed. Supercapacitor performance was investigated in a series of electrochemical tests and compared with pure Fe3O4. In 1 M KOH electrolyte, a high specific capacitance of 317.4 F g−1 at current density of 0.5 A g−1 was achieved, with the cycling stability remaining at 86.9% after 5500 cycles. The improved electrochemical properties of Fe3O4/RGO nanocomposites can be attributed to high electron transport, increased interfaces and positive synergistic effects between Fe3O4 and RGO. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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27 pages, 36443 KiB  
Article
Fabrication of MNPs/rGO/PMMA Composite for the Removal of Hazardous Cr(VI) from Tannery Wastewater through Batch and Continuous Mode Adsorption
by Rahman Ullah, Waqas Ahmad, Muhammad Yaseen, Mansoor Khan, Mehmood Iqbal Khattak, Badrul Mohamed Jan, Rabia Ikram and George Kenanakis
Materials 2021, 14(22), 6923; https://doi.org/10.3390/ma14226923 - 16 Nov 2021
Cited by 7 | Viewed by 1802
Abstract
Herein, we report the synthesis of magnetic nanoparticle (MNP)-reduced graphene oxide (rGO) and polymethylmethacrylate (PMMA) composite (MNPs/rGO/PMMA) as adsorbent via an in situ fabrication strategy and, in turn, the application for adsorptive removal and recovery of Cr(VI) from tannery wastewater. The composite material [...] Read more.
Herein, we report the synthesis of magnetic nanoparticle (MNP)-reduced graphene oxide (rGO) and polymethylmethacrylate (PMMA) composite (MNPs/rGO/PMMA) as adsorbent via an in situ fabrication strategy and, in turn, the application for adsorptive removal and recovery of Cr(VI) from tannery wastewater. The composite material was characterized via XRD, FTIR and SEM analyses. Under batch mode experiments, the composite achieved maximum adsorption of the Cr(VI) ion (99.53 ± 1.4%, i.e., 1636.49 mg of Cr(VI)/150 mg of adsorbent) at pH 2, adsorbent dose of 150 mg/10 mL of solution and 30 min of contact time. The adsorption process was endothermic, feasible and spontaneous and followed a pseudo-2nd order kinetic model. The Cr ions were completely desorbed (99.32 ± 2%) from the composite using 30 mL of NaOH solution (2M); hence, the composite exhibited high efficiency for five consecutive cycles without prominent loss in activity. The adsorbent was washed with distilled water and diluted HCl (0.1M), then dried under vacuum at 60 °C for reuse. The XRD analysis confirmed the synthesis and incorporation of magnetic iron oxide at 2θ of 30.38°, 35.5°, 43.22° and 57.36°, respectively, and graphene oxide (GO) at 25.5°. The FTIR analysids revealed that the composite retained the configurations of the individual components, whereas the SEM analysis indicated that the magnetic Fe3O4–NPs (MNPs) dispersed on the surface of the PMMA/rGO sheets. To anticipate the behavior of breakthrough, the Thomas and Yoon–Nelson models were applied to fixed-bed column data, which indicated good agreement with the experimental data. This study evaluates useful reference information for designing a cost-effective and easy-to-use adsorbent for the efficient removal of Cr(VI) from wastewater. Therefore, it can be envisioned as an alternative approach for a variety of unexplored industrial-level operations. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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Graphical abstract

10 pages, 3541 KiB  
Article
A Novel Method for the Detection of SARS-CoV-2 Based on Graphene-Impedimetric Immunosensor
by Gabriel C. Zaccariotto, Martin K. L. Silva, Giovanna S. Rocha and Ivana Cesarino
Materials 2021, 14(15), 4230; https://doi.org/10.3390/ma14154230 - 29 Jul 2021
Cited by 28 | Viewed by 2709
Abstract
Due to the SARS-CoV-2 pandemic, there has been an increase in the search for affordable healthcare devices for mass testing and rapid diagnosis. In this context, this work described a new methodology for SARS-CoV-2 detection based on an impedimetric immunosensor developed using the [...] Read more.
Due to the SARS-CoV-2 pandemic, there has been an increase in the search for affordable healthcare devices for mass testing and rapid diagnosis. In this context, this work described a new methodology for SARS-CoV-2 detection based on an impedimetric immunosensor developed using the advantageous immobilization of antibodies in the reduced graphene oxide (rGO). The rGO was obtained by chemical synthesis from the commercial graphene oxide (GO), and the materials were morphologically, electrochemically and visually characterized. The cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used to evaluate the fabrication steps of the immunosensor. The electrochemical immunoassay was considered for SARS-CoV-2 spike protein RBD detection using a impedimetric immunosensor and redox couple ([(Fe(CN)6)]3−/4−) as a probe. The immunosensor was effectively developed and applied in the detection of SARS-CoV-2 spike protein RBD in saliva samples. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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11 pages, 2661 KiB  
Article
A Low-Temperature Heat Output Photoactive Material-Based High-Performance Thermal Energy Storage Closed System
by Xiangyu Yang, Shijie Li, Jin Zhang, Xiaomin Wang, Yongzhen Wang and Jianguo Zhao
Materials 2021, 14(6), 1434; https://doi.org/10.3390/ma14061434 - 16 Mar 2021
Cited by 3 | Viewed by 1832
Abstract
Designing and synthesizing photothermal conversion materials with better storage capacity, long-term stability as well as low temperature energy output capability is still a huge challenge in the area of photothermal storage. In this work, we report a brand new photothermal conversion material obtained [...] Read more.
Designing and synthesizing photothermal conversion materials with better storage capacity, long-term stability as well as low temperature energy output capability is still a huge challenge in the area of photothermal storage. In this work, we report a brand new photothermal conversion material obtained by attaching trifluoromethylated azobenzene (AzoF) to reduced graphene oxide (rGO). AzoF-rGO exhibits outstanding heat storage density and power density up to 386.1 kJ·kg−1 and 890.6 W·kg−1, respectively, with a long half-life (87.7 h) because of the H-bonds based on high attachment density. AzoF-rGO also exhibits excellent cycling stability and is equipped with low-temperature energy output capability, which achieves the reversible cycle of photothermal conversion within a closed system. This novel AzoF-rGO complex, which on the one hand exhibits remarkable energy storage performance as well as excellent storage life span, and on the other hand is equipped with the ability to release heat at low temperatures, shows broad prospects in the practical application of actual photothermal storage. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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Review

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16 pages, 2585 KiB  
Review
A Brief Review: The Use of L-Ascorbic Acid as a Green Reducing Agent of Graphene Oxide
by Mariano Palomba, Gianfranco Carotenuto and Angela Longo
Materials 2022, 15(18), 6456; https://doi.org/10.3390/ma15186456 - 17 Sep 2022
Cited by 19 | Viewed by 3020
Abstract
The reduced form of graphene oxide (r-GO) represents a versatile precursor to obtain graphene derivatives. Graphene oxide (GO) consists of a layered material based on a carbon skeleton functionalized by different oxygen-containing groups, while r-GO is obtained by the almost complete removal of [...] Read more.
The reduced form of graphene oxide (r-GO) represents a versatile precursor to obtain graphene derivatives. Graphene oxide (GO) consists of a layered material based on a carbon skeleton functionalized by different oxygen-containing groups, while r-GO is obtained by the almost complete removal of these oxygen-containing functional groups. The r-GO has mechanical, electrical, and optical properties quite similar to graphene, thus, it proves to be a convenient 2D material useful for many technological applications. Nowadays, the most important aspects to consider in producing r-GO are: (i) the possibility of obtaining the highest reduction grade; (ii) the possibility of improving the dispersion stability of the resulting graphene using surfactants; (iii) the use of environmentally friendly and inexpensive reducing agents. Consequently, the availability of effective soft-chemistry approaches based on a green reducing agent for converting GO to r-GO are strongly needed. Among the green reductants, the most suitable is L-ascorbic acid (L-aa). Different studies have revealed that L-aa can achieve C/O ratio and conductivity values comparable to those obtained by hydrazine, a typical reducing agent. These aspects could promote an effective application strategy, and for this reason, this review summarizes and analyzes, in some detail, the up-to date literature on the reduction of GO by L-aa. The results are organized according to the two most important approaches, which are the reduction in liquid-phase, and the reduction in gel-phase. Reaction mechanisms and different experimental parameters affecting the processes were also compared. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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17 pages, 1021 KiB  
Review
The Synergistic Properties and Gas Sensing Performance of Functionalized Graphene-Based Sensors
by Zandile Dennis Leve, Emmanuel Iheanyichukwu Iwuoha and Natasha Ross
Materials 2022, 15(4), 1326; https://doi.org/10.3390/ma15041326 - 11 Feb 2022
Cited by 13 | Viewed by 2305
Abstract
The detection of toxic gases has long been a priority in industrial manufacturing, environmental monitoring, medical diagnosis, and national defense. The importance of gas sensing is not only of high benefit to such industries but also to the daily lives of people. Graphene-based [...] Read more.
The detection of toxic gases has long been a priority in industrial manufacturing, environmental monitoring, medical diagnosis, and national defense. The importance of gas sensing is not only of high benefit to such industries but also to the daily lives of people. Graphene-based gas sensors have elicited a lot of interest recently, due to the excellent physical properties of graphene and its derivatives, such as graphene oxide (GO) and reduced graphene oxide (rGO). Graphene oxide and rGO have been shown to offer large surface areas that extend their active sites for adsorbing gas molecules, thereby improving the sensitivity of the sensor. There are several literature reports on the promising functionalization of GO and rGO surfaces with metal oxide, for enhanced performance with regard to selectivity and sensitivity in gas sensing. These synthetic and functionalization methods provide the ideal combination/s required for enhanced gas sensors. In this review, the functionalization of graphene, synthesis of heterostructured nanohybrids, and the assessment of their collaborative performance towards gas-sensing applications are discussed. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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25 pages, 98417 KiB  
Review
Fabrication, Structure, Performance, and Application of Graphene-Based Composite Aerogel
by Dequan Wei, Xiang Liu, Shenghua Lv, Leipeng Liu, Lei Wu, Zexiong Li and Yonggang Hou
Materials 2022, 15(1), 299; https://doi.org/10.3390/ma15010299 - 31 Dec 2021
Cited by 11 | Viewed by 4015
Abstract
Graphene-based composite aerogel (GCA) refers to a solid porous substance formed by graphene or its derivatives, graphene oxide (GO) and reduced graphene oxide (rGO), with inorganic materials and polymers. Because GCA has super-high adsorption, separation, electrical properties, and sensitivity, it has great potential [...] Read more.
Graphene-based composite aerogel (GCA) refers to a solid porous substance formed by graphene or its derivatives, graphene oxide (GO) and reduced graphene oxide (rGO), with inorganic materials and polymers. Because GCA has super-high adsorption, separation, electrical properties, and sensitivity, it has great potential for application in super-strong adsorption and separation materials, long-life fast-charging batteries, and flexible sensing materials. GCA has become a research hotspot, and many research papers and achievements have emerged in recent years. Therefore, the fabrication, structure, performance, and application prospects of GCA are summarized and discussed in this review. Meanwhile, the existing problems and development trends of GCA are also introduced so that more will know about it and be interested in researching it. Full article
(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
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