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Advances in Graphene Film and Composites

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 7149

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Target Laboratory, Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Strada Reactorului 30, 077125 Măgurele, Romania
Interests: graphene synthesis; graphene functionalization; thin metal–oxide films
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Special Issue Information

Dear Colleagues,

Graphene, as well as trans-metal dichalcogenides (TMDs) have appeared as the materials with the unique features that make them attractive for application in nanotechnology. Since such materials reveal a very small bandgap (or even lack of it), manipulation with the electronic structure is necessary to unlock their full potential. Successful engineering with the crystal structure of the 2D crystals leads to opening of the bandgap, and therefore, for the wide variety of applications in nanotechnology, encompassing (opto-)electronics, spintronics, sensorics, as well as surface science and biochemistry.

The main feature of this Special Issue is to provide an open-source sharing of the current significant results in the field of the graphene preparation, its further functionalization and manipulation with its physical and chemical properties, as well as their characterisation using different theoretical and experimental methods.

Dr. Karolina Anna Drogowska-Horná
Guest Editor

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Keywords

  • graphene composites
  • van der Waals heterostructures
  • graphene–oxide thin-films composites
  • graphene functionalization

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Published Papers (3 papers)

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Research

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12 pages, 4888 KiB  
Article
Light-Boosting Highly Sensitive and Ultrafast Piezoelectric Sensor Based on Composite Membrane of Copper Phthalocyanine and Graphene Oxide
by Jihong Wang, Zhening Fang, Wenhao Liu, Liuyuan Zhu, Qiubo Pan, Zhen Gu, Huifeng Wang, Yingying Huang and Haiping Fang
Int. J. Mol. Sci. 2024, 25(12), 6713; https://doi.org/10.3390/ijms25126713 - 18 Jun 2024
Viewed by 761
Abstract
Self-powered wearable pressure sensors based on flexible electronics have emerged as a new trend due to the increasing demand for intelligent and portable devices. Improvements in pressure-sensing performance, including in the output voltage, sensitivity and response time, can greatly expand their related applications; [...] Read more.
Self-powered wearable pressure sensors based on flexible electronics have emerged as a new trend due to the increasing demand for intelligent and portable devices. Improvements in pressure-sensing performance, including in the output voltage, sensitivity and response time, can greatly expand their related applications; however, this remains challenging. Here, we report on a highly sensitive piezoelectric sensor with novel light-boosting pressure-sensing performance, based on a composite membrane of copper phthalocyanine (CuPC) and graphene oxide (GO) (CuPC@GO). Under light illumination, the CuPC@GO piezoelectric sensor demonstrates a remarkable increase in output voltage (381.17 mV, 50 kPa) and sensitivity (116.80 mV/kPa, <5 kPa), which are approximately twice and three times of that the sensor without light illumination, respectively. Furthermore, light exposure significantly improves the response speed of the sensor with a response time of 38.04 µs and recovery time of 58.48 µs, while maintaining excellent mechanical stability even after 2000 cycles. Density functional theory calculations reveal that increased electron transfer from graphene to CuPC can occur when the CuPC is in the excited state, which indicates that the light illumination promotes the electron excitation of CuPC, and thus brings about the high polarization of the sensor. Importantly, these sensors exhibit universal spatial non-contact adjustability, highlighting their versatility and applicability in various settings. Full article
(This article belongs to the Special Issue Advances in Graphene Film and Composites)
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14 pages, 2495 KiB  
Article
Effect of Fillers Modification with ILs on Fillers Textural Properties: Thermal Properties of SBR Composites
by Magdalena Gaca and Cyril Vaulot
Int. J. Mol. Sci. 2024, 25(2), 885; https://doi.org/10.3390/ijms25020885 - 10 Jan 2024
Cited by 2 | Viewed by 900
Abstract
In this work, we present the effect of graphene nanoplatelets (GnPs) modification with ionic liquids (ILs). The textural properties of graphene nanoplatelets (GnPs) used as styrene-butadiene rubber’s filler and the thermal properties of the composites obtained with the use of the mentioned fillers [...] Read more.
In this work, we present the effect of graphene nanoplatelets (GnPs) modification with ionic liquids (ILs). The textural properties of graphene nanoplatelets (GnPs) used as styrene-butadiene rubber’s filler and the thermal properties of the composites obtained with the use of the mentioned fillers were investigated. GnPs were modified with 1-butylpyridinium bromide (BPyBr) and 4-methyl-1-butylpyridinium bromide (BmPyBr) through two different ways. One strategy has been to deposit the filler modifier from the solution. The second one involved the modification of the filler with ionic liquids in bulk during the preparation of elastomer blends. Settlement of the proposed ionic liquids onto the GnPs’ surface led to significant changes in the textural characteristics. BPyBr has restricted the filler’s microporosity, whereas BmPyBr has caused the formation of a more opened filler structure without the increase in its average pore size. GnPs modified with ILs led to reducing the temperature of vulcanization of SBR compounds and affected the thermal stability of the composites. Full article
(This article belongs to the Special Issue Advances in Graphene Film and Composites)
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Review

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20 pages, 8091 KiB  
Review
Graphene Nanocomposites as Innovative Materials for Energy Storage and Conversion—Design and Headways
by Ayesha Kausar, Ishaq Ahmad, Tingkai Zhao, Osamah Aldaghri, Khalid H. Ibnaouf and M. H. Eisa
Int. J. Mol. Sci. 2023, 24(14), 11593; https://doi.org/10.3390/ijms241411593 - 18 Jul 2023
Cited by 14 | Viewed by 4138
Abstract
This review mainly addresses applications of polymer/graphene nanocomposites in certain significant energy storage and conversion devices such as supercapacitors, Li-ion batteries, and fuel cells. Graphene has achieved an indispensable position among carbon nanomaterials owing to its inimitable structure and features. Graphene and its [...] Read more.
This review mainly addresses applications of polymer/graphene nanocomposites in certain significant energy storage and conversion devices such as supercapacitors, Li-ion batteries, and fuel cells. Graphene has achieved an indispensable position among carbon nanomaterials owing to its inimitable structure and features. Graphene and its nanocomposites have been recognized for providing a high surface area, electron conductivity, capacitance, energy density, charge–discharge, cyclic stability, power conversion efficiency, and other advanced features in efficient energy devices. Furthermore, graphene-containing nanocomposites have superior microstructure, mechanical robustness, and heat constancy characteristics. Thus, this state-of-the-art article offers comprehensive coverage on designing, processing, and applying graphene-based nanoarchitectures in high-performance energy storage and conversion devices. Despite the essential features of graphene-derived nanocomposites, several challenges need to be overcome to attain advanced device performance. Full article
(This article belongs to the Special Issue Advances in Graphene Film and Composites)
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