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Preparation and Application of High-Performance Multifunctional Graphene Macroscopic Assemblies and Composites

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Carbon Materials".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 4872

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Special Issue Editor

Dr. Ying Wu

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Guest Editor

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Interests: multifunctional applications of graphene macroscopic assemblies; multifunctional applications of graphene/polymer composites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Graphene is a rising star in the field of materials science, showing a 2D hexagonal crystalline structure of carbon atoms with sp² bonds. It has attracted substantial interest since being exfoliated from graphite in 2004, owing to its high Young’s modulus, excellent tensile strength, huge specific surfaces area, extraordinary intrinsic electron mobility, and significant thermal conductivity. Varieties of graphene macroscopic assemblies have been fabricated using graphene and its derivatives, such as fibre, film, foam, aerogel, woven fabric, and non-woven fabric. As a high-performance multifunctional additive, graphene endows composites with fascinating mechanical, electrical, thermal, and self-healing properties, among others. High-performance multifunctional graphene macroscopic assemblies and graphene-based composites have been constantly studied in recent years. The revealing relationships between microstructure and material properties provide new ideas and insights into the preparation of multifunctional applications.

This Special Issue covers new advances in high-performance multifunctional graphene macroscopic assemblies and composites. Studies related to the novel fabrication of graphene and composites, the designation of graphene networks and flexible multifunctional materials, and advanced characterizations are preferred. Full papers, communications, and reviews are all welcome.

Dr. Ying Wu
Guest Editor

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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

graphene macroscopic assembly
graphene reinforced composite
sensor
stretchable conductor
thermal conduction/isolation
electromagnetic interference shielding
energy
catalysis
gas adsorption and separation
transparent conductive film
other multifunctional applications

Published Papers (3 papers)

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Research

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11 pages, 6026 KiB

Open AccessArticle

Size Effect of Graphene Oxide on Graphene-Aerogel-Supported Au Catalysts for Electrochemical CO₂ Reduction

by Shuling Shen, Xuecong Pan, Jin Wang, Tongyu Bao, Xinjuan Liu, Zhihong Tang, Huixin Xiu and Jing Li

Materials 2023, 16(21), 7042; https://doi.org/10.3390/ma16217042 - 5 Nov 2023

Cited by 4 | Viewed by 901

Abstract

The lateral size of graphene nanosheets plays a critical role in the properties and microstructure of 3D graphene as well as their application as supports of electrocatalysts for CO₂ reduction reactions (CRRs). Here, graphene oxide (GO) nanosheets with different lateral sizes (1.5, 5, and 14 µm) were utilized as building blocks for 3D graphene aerogel (GA) to research the size effects of GO on the CRR performances of 3D Au/GA catalysts. It was found that GO-L (14 µm) led to the formation of GA with large pores and a low surface area and that GO-S (1.5 µm) induced the formation of GA with a thicker wall and isolated pores, which were not conducive to the mass transfer of CO₂ or its interaction with catalysts. Au/GA constructed with a suitable-sized GO (5 µm) exhibited a hierarchical porous network and the highest surface area and conductivity. As a result, Au/GA-M exhibited the highest Faradaic efficiency (FE) of CO (FE_CO = 81%) and CO/H₂ ratio at −0.82 V (vs. a Reversible Hydrogen Electrode (RHE)). This study indicates that for 3D GA-supported catalysts, there is a balance between the improvement of conductivity, the adsorption capacity of CO₂, and the inhibition of the hydrogen evolution reaction (HER) during the CRR, which is related to the lateral size of GO. Full article

(This article belongs to the Special Issue Preparation and Application of High-Performance Multifunctional Graphene Macroscopic Assemblies and Composites)

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Review

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21 pages, 4542 KiB

Open AccessEditor’s ChoiceReview

Poly(ethylene glycol)-Engrafted Graphene Oxide for Gene Delivery and Nucleic Acid Amplification

by Khushbu Chauhan, Jin Woo, Woong Jung and Dong-Eun Kim

Materials 2023, 16(23), 7434; https://doi.org/10.3390/ma16237434 - 29 Nov 2023

Viewed by 969

Abstract

Graphene oxide (GO) is an oxidized form of graphene accommodating various oxygen-containing functional groups such as hydroxyl, epoxy, and carboxyl groups on its surface. GO has been extensively utilized in various biomedical applications including the delivery of biomolecules and the development of biosensors owing to its beneficial properties such as high surface area, nucleic acid adsorption, and fluorescence quenching through fluorescence resonance energy transfer (FRET). However, despite these favorable properties, the direct utilization of GO in these applications is often limited by low dispersibility in a physiological medium, cytotoxicity, low biocompatibility, and a strong binding affinity of nucleic acids to GO surface. The large surface area of GO and the presence of various functional groups on its surface make it highly amenable to facile surface modifications, offering scope for GO surface functionalization to overcome these limitations. When polyethylene glycol (PEG), which is a biocompatible polymer, is conjugated to GO, the PEGylated GO enhances the biocompatibility and dispersibility, reduces cytotoxicity, and allows controlled drug delivery with controllable binding affinity towards nucleic acid. PEG-engrafted GO retains the beneficial properties of GO while effectively addressing its limitations, rendering it suitable for various biomedical applications. In this review, we present the recent advancements of PEGylated GO in gene/drug delivery and the facilitation of nucleic acid amplification techniques, which aid in the development of therapeutic and diagnostic tools, respectively. Full article

(This article belongs to the Special Issue Preparation and Application of High-Performance Multifunctional Graphene Macroscopic Assemblies and Composites)

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39 pages, 11348 KiB

Open AccessReview

3D Printed Graphene and Graphene/Polymer Composites for Multifunctional Applications

by Ying Wu, Chao An and Yaru Guo

Materials 2023, 16(16), 5681; https://doi.org/10.3390/ma16165681 - 18 Aug 2023

Cited by 4 | Viewed by 2594

Abstract

Three-dimensional (3D) printing, alternatively known as additive manufacturing, is a transformative technology enabling precise, customized, and efficient manufacturing of components with complex structures. It revolutionizes traditional processes, allowing rapid prototyping, cost-effective production, and intricate designs. The 3D printed graphene-based materials combine graphene’s exceptional properties with additive manufacturing’s versatility, offering precise control over intricate structures with enhanced functionalities. To gain comprehensive insights into the development of 3D printed graphene and graphene/polymer composites, this review delves into their intricate fabrication methods, unique structural attributes, and multifaceted applications across various domains. Recent advances in printable materials, apparatus characteristics, and printed structures of typical 3D printing techniques for graphene and graphene/polymer composites are addressed, including extrusion methods (direct ink writing and fused deposition modeling), photopolymerization strategies (stereolithography and digital light processing) and powder-based techniques. Multifunctional applications in energy storage, physical sensor, stretchable conductor, electromagnetic interference shielding and wave absorption, as well as bio-applications are highlighted. Despite significant advancements in 3D printed graphene and its polymer composites, innovative studies are still necessary to fully unlock their inherent capabilities. Full article

(This article belongs to the Special Issue Preparation and Application of High-Performance Multifunctional Graphene Macroscopic Assemblies and Composites)

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