Recent Advances in the Synthesis and Application of Three-Dimensional Graphene-Based Aerogels

Jing, Jingyun; Qian, Xiaodong; Yan, Sasa; Liu, Guolin; Shi, Congling

doi:10.3390/molecules27030924

Cited by 17 publications

(8 citation statements)

References 119 publications

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“…The graphene aerogel is appropriate for fabricating polymer composite due to its high chemical stability and mechanical property [ 9 , 10 ]. In many cases, graphene oxide (GO) is synthesized and dispersed in distilled water to manufacture a 3D porous GO aerogel [ 11 , 12 ]. The functional groups of GO entail hydrogen bonding to reinforce the connection with graphene skeletons and produce a stable aerogel structure [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Song

2022

Gels

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3D porous graphene aerogel exhibits a high surface area which can hold plenty of pure phase change material (PCM) into the internal space. In order to maintain the flexibility of PCM without volume shrinkage under the external force, cross-linked graphene aerogel was prepared by the cysteamine vapor method. The cross-linked graphene aerogel had a high stress–strain durability and chemical stability for infiltrating PCM to produce a form-stable PCM composite. The latent heat of PCM is one of the elements to estimate the capacity of PCM thermal energy storage (TES) during the phase transition process. The cross-linked graphene aerogel-supported PCM composite showed a great TES to be utilized in thermal-to-electrical energy harvesting. The cross-linked graphene aerogel also had an excellent mechanical property of preventing damage at a high temperature.

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Section: Introductionmentioning

confidence: 99%

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Song

2022

Gels

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“…With these DOI: 10.1002/crat.202200186 exceptional properties, porous graphene has shown great promises for a variety of applications, especially for energy conversion and storage. [6][7][8][9][10] 2D graphene always suffers from re-aggregation problem due to the strong Van der Waals interaction during charge/discharge whereas, porous graphene not only facilitate rapid transport of electrons and ions, but also prevent agglomeration effectively. [11,12] At present, these porous graphene materials were prepared using template or template-free methods, where defects are being introduced in the graphene lattice planes by chemical etching, chemical activation, etc.…”

Section: Introductionmentioning

confidence: 99%

Design of Porous Graphene Materials from Organic Precursors

Debnath

Sutradhar

Saha

2023

Cryst. Res. Technol.

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The preparation of the porous graphene materials with controllable porosity basically depends on the design of porous architectures. The development of three-dimensional (3D) graphene materials from two-dimensional (2D) graphene sheets can harness the unique physical and electrical properties of graphene, but the challenges lie on the design and synthesis of nanoporous graphene with controlled engineering. In this work, two organic aromatic molecules viz., 2-amino-3-hydroxypyridine and phloroglucinol were targeted for the development of porous graphene nanostructures. The synthesis process was designed in such a way that both the molecules having ─OH and ─NH 2 groups at ortho position and 3 ─OH groups at 1, 3, 5 positions, respectively, can generate pores along with the development of graphenic lattice during heat treatment. The optimization of reaction conditions viz., time and temperature was done and the chemistry of formation of porous natured graphenic lattice was discussed. Interestingly, the results indicate that both the organic molecules have the potential to develop porous graphenic structures within their lattice at relatively low temperatures without using any additional reagents and reaction conditions. It is suggested that the structure of organic precursor is a critical factor which needs to be optimized to produce porous graphenes.

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“…Three-dimensional (3D) graphene is a new type of carbon nanomaterial constructed from graphene nanosheets at the macro scale. It can maintain the excellent characteristics of graphene, overcome the π-π force between graphene layers, effectively block the self-disordered stacking of graphene nanosheets, and achieve the stability of its macro structure [6][7][8][9][10]. The structural characteristics of 3D graphene materials have shown unique advantages in applications such as electrochemical catalysis [11][12][13][14], energy storage [15][16][17][18], sensors [19,20], biomaterials [21][22][23], and environmental fields [24][25][26] and are also considered a new type of functional material with great potential.…”

Section: Introductionmentioning

confidence: 99%

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

Shen,

Pan,

Wang

et al. 2023

Materials

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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 (FECO = 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.

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Recent Advances in the Synthesis and Application of Three-Dimensional Graphene-Based Aerogels

Cited by 17 publications

References 119 publications

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Design of Porous Graphene Materials from Organic Precursors

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

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