Thin, High-Flux, Self-Standing, Graphene Oxide Membranes for Efficient Hydrogen Separation from Gas Mixtures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913387" target="_blank" >RIV/60461373:22310/17:43913387 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/17:43913387
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/chem.201702233/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/chem.201702233/full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201702233" target="_blank" >10.1002/chem.201702233</a>
Alternative languages
Result language
angličtina
Original language name
Thin, High-Flux, Self-Standing, Graphene Oxide Membranes for Efficient Hydrogen Separation from Gas Mixtures
Original language description
The preparation and gas-separation performance of self-standing, high-flux, graphene oxide (GO) membranes is reported. Defect-free, 15-20 mm thick, mechanically stable, unsupported GO membranes exhibited outstanding gas-separation performance towards H-2/CO2 that far exceeded the corresponding 2008 Robeson upper bound. Remarkable separation efficiency of GO membranes for H-2 and bulky C-3 or C-4 hydrocarbons was achieved with high flux and good selectivity at the same time. On the contrary, N-2 and CH4 molecules, with larger kinetic diameter and simultaneously lower molecular weight, relative to that of CO2, remained far from the corresponding H-2/N-2 or H-2/CH4 upper bounds. Pore size distribution analysis revealed that the most abundant pores in GO material were those with an effective pore diameter of 4 nm; therefore, gas transport is not exclusively governed by size sieving and/or Knudsen diffusion, but in the case of CO2 was supplemented by specific interactions through 1) hydrogen bonding with carboxyl or hydroxyl functional groups and 2) the quadrupole moment. The self-standing GO membranes presented herein demonstrate a promising route towards the large-scale fabrication of high-flux, hydrogen-selective gas membranes intended for the separation of H-2/CO2 or H-2/alkanes.
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
10402 - Inorganic and nuclear chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemistry A European Journal
ISSN
0947-6539
e-ISSN
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Volume of the periodical
23
Issue of the periodical within the volume
47
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
11416-11422
UT code for WoS article
000408079900031
EID of the result in the Scopus database
2-s2.0-85026555488