Gas separation performance of ultra-permeable graphene oxide membranes supported by single-wall carbon nanotubes: Unveiling the effect of fabrication method, gas flow transport type, and material aging
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931845" target="_blank" >RIV/60461373:22310/25:43931845 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/25:43931845 RIV/00216208:11320/25:10506425 RIV/00216275:25530/25:39924131
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0376738825004697?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0376738825004697?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.memsci.2025.124156" target="_blank" >10.1016/j.memsci.2025.124156</a>
Alternative languages
Result language
angličtina
Original language name
Gas separation performance of ultra-permeable graphene oxide membranes supported by single-wall carbon nanotubes: Unveiling the effect of fabrication method, gas flow transport type, and material aging
Original language description
This study comprehensively investigated the impact of the preparation method on the resulting material properties of self-standing graphene oxide (GO) membranes and GO membranes deposited on a single-walled carbon nanotube (SWCNT) support layer, which was carried out using SEM, XRD, XPS, Raman and FTIR spectroscopy, 3D profilometry, thermal analysis and physisorption characterisation. The analysis of the gas permeability and separation properties of the membranes (including the effect of ageing) performed by repeated time-lag measurements of individual gases revealed a gradually increasing permeability and ideal selectivity, probably due to the release of residual water from the mother liquor. Samples prepared by the evaporation or vacuum filtration method exhibited a relatively short lifetime (up to 100 h), high H2 permeability (up to 12,000 Barrers), and ideal H2/CO2 selectivity from 2 to 3. In contrast, membranes prepared by the pressure filtration method showed durable character for almost 800 days while showing huge and increasing permeability exceeding 100,000 Barrers and, at the same time, remarkable selectivity for H2/CO2 (more than 4) and H2/CH4 (around 2) gas vapors, over the 2008 Robeson upper bound limit. The transport analysis performed via the Binary Friction Model revealed the predominant type of gas transport as Darcy flow rather than Knudsen type. Our work demonstrates the potential of GO-SWCNT membrane materials for developing new advanced separation membranes for future efficient gas, vapor, or liquid separation technologies.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
<a href="/en/project/GA19-14547S" target="_blank" >GA19-14547S: New composite membranes for targeted gas and vapour separations (CoMeTS)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF MEMBRANE SCIENCE
ISSN
0376-7388
e-ISSN
1873-3123
Volume of the periodical
729
Issue of the periodical within the volume
June 2025
Country of publishing house
BE - BELGIUM
Number of pages
12
Pages from-to
124156
UT code for WoS article
001486239200001
EID of the result in the Scopus database
2-s2.0-105003955789