Cited by 30Aerogels and thermal insulationGraphene research and applicationsCarbon Dioxide Capture Technologies

Multi-functional 2D hybrid aerogels for gas absorption applications

Open access
Androulidakis, Charalampos, Kotsidi, Maria, Gorgolis, George, Pavlou, Christos, Sygellou, Labrini, Paterakis, George, Koutroumanis, Nick, Galiotis, Costas·2021·Scientific Reports

Abstract

Aerogels have attracted significant attention recently due to their ultra-light weight porous structure, mechanical robustness, high electrical conductivity, facile scalability and their use as gas and oil absorbers. Herein, we examine the multi-functional properties of hybrid aerogels consisting of reduced graphene oxide (rGO) integrated with hexagonal boron nitride (hBN) platelets. Using a freeze-drying approach, hybrid aerogels are fabricated by simple mixing with various volume fractions of hBN and rGO up to 0.5/0.5 ratio. The fabrication method is simple, cost effective, scalable and can be extended to other 2D materials combinations. The hybrid rGO/hBN aerogels (HAs) are mechanically robust and highly compressible with mechanical properties similar to those of the pure rGO aerogel. We show that the presence of hBN in the HAs enhances the gas absorption capacities of formaldehyde and water vapour up to ~ 7 and > 8 times, respectively, as compared to pure rGO aerogel. Moreover, the samples show good recoverability, making them highly efficient materials for gas absorption applications and for the protection of artefacts such as paintings in storage facilities. Finally, even in the presence of large quantity of insulating hBN, the HAs are electrically conductive, extending the potential application spectrum of the proposed hybrids to the field of electro-thermal actuators. The work proposed here paves the way for the design and production of novel 2D materials combinations with tailored multi-functionalities suited for a large variety of modern applications.

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Crossref · 10.1038/s41598-021-92957-8

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  • Raman spectra of NCSe@GA and NCSe@MGA show three additional peaks at ~1369, ~1575, and ~2601 cm−1 representing D-band, G-band, and 2D(G*)-band from rGO contents.

    “Raman spectra of NCSe@GA and NCSe@MGA showed three additional peaks at ~1369, ~1575 and ~2601 cm− 1 representing typical D-band, G-band and 2D(G*)-band from rGO contents [71].”

    From Rationally designed multifunctional Ti3C2 MXene@Graphene composite aerogel integrated with bimetallic selenides for enhanced supercapacitor performance and overall water splitting (2022) · cites this paper as [71]

    The Results and discussion section (Fig. 3; page not provided) identifies characteristic D and G Raman peaks in rGO aerogels, supporting that part of the band assignment. It does not report spectra for NCSe@GA or NCSe@MGA, the claimed peak positions (~1369, ~1575, and ~2601 cm−1), or a 2D(G*) peak. (LLM, conf=0.88)

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Research works printed but not linked: 2

  1. [51]Majidi R Karami AJP Adsorption of formaldehyde on graphene and graphyne Physics E 2014 59 169 173 10.1016/j.physe.2014.01.019 · DOI
  2. [54]Ye J Few-layered graphene-like boron nitride: A highly efficient adsorbent for indoor formaldehyde removal Environ Sci. Technol. 2017 4 20 25 10.1021/acs.estlett.6b00426 · DOI

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Authors
Androulidakis, C., Kotsidi, M., Gorgolis, G., Pavlou, C., Sygellou, L., Paterakis, G., Koutroumanis, N., & Galiotis, C.
Affiliations
  • Foundation for Research and Technology Hellas (GR)
  • University of Patras (GR)
Corresponding author
Galiotis, Costas
Venue
Scientific Reports
Published
2021-06-30
Volume
11
Issue
1
Pages
13548-13548
ISSN
2045-2322 (ISSN-L)
OpenAlex
W3173228770
Cited by
30
References
57
Citations by year
2026: 10 · 2025: 4 · 2024: 7 · 2023: 3 · 2022: 6
FWCI
1.46
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • arXiv (Cornell University) (cc-by)
Funders
  • University of Patras
  • Graphene Flagship (881603)
  • General Secretariat for Research and Technology
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Aerogels and thermal insulation
  • Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
Keywords
hybrid aerogels, reduced graphene oxide, hexagonal boron nitride, gas absorption, formaldehyde adsorption, water vapor adsorption, freeze-drying, mechanical robustness, electrical conductivity, electrothermal actuator, two-dimensional materials

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