Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 5716-5723 |
| Seitenumfang | 8 |
| Fachzeitschrift | Journal of Materials Chemistry A |
| Jahrgang | 2 |
| Ausgabenummer | 16 |
| Frühes Online-Datum | 5 Feb. 2014 |
| Publikationsstatus | Veröffentlicht - 2014 |
Abstract
Research on interlayer gallery-based gas and liquid separation has gained widespread attention. A series of layered materials like lamellar ZSM-5, graphene and its derivatives have been fabricated into membranes showing fascinating gas/liquid separation properties. Layered double hydroxides (LDHs) are prominent representatives of layered compounds composed of regularly arranged brucite-like 2D sheets. Here we successfully prepared well-intergrown NiAl-CO3 LDH membranes in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure of prepared membranes. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 0.6 μm thick LDH membranes, while randomly oriented 5 μm thick LDH membranes formed from CO2-saturated precursor solutions. Both ab- & randomly oriented LDH membranes showed clear size-based selectivity and H2 was found to preferentially permeate through the interlayer galleries. However, randomly oriented LDH membranes showed a much higher H2 selectivity possibly due to the decreased density of mesoscopic defects. Furthermore, in addition to the NiAl-CO3 LDH membrane, a compact and randomly oriented ZnAl-NO3 LDH membrane with reasonable gas selectivity was successfully prepared here by proper optimization of the synthesis conditions.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Allgemeine Chemie
- Energie (insg.)
- Erneuerbare Energien, Nachhaltigkeit und Umwelt
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
Ziele für nachhaltige Entwicklung
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in: Journal of Materials Chemistry A, Jahrgang 2, Nr. 16, 2014, S. 5716-5723.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - In situ formation of LDH membranes of different microstructures with molecular sieve gas selectivity
AU - Liu, Yi
AU - Wang, Nanyi
AU - Caro, Jürgen
PY - 2014
Y1 - 2014
N2 - Research on interlayer gallery-based gas and liquid separation has gained widespread attention. A series of layered materials like lamellar ZSM-5, graphene and its derivatives have been fabricated into membranes showing fascinating gas/liquid separation properties. Layered double hydroxides (LDHs) are prominent representatives of layered compounds composed of regularly arranged brucite-like 2D sheets. Here we successfully prepared well-intergrown NiAl-CO3 LDH membranes in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure of prepared membranes. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 0.6 μm thick LDH membranes, while randomly oriented 5 μm thick LDH membranes formed from CO2-saturated precursor solutions. Both ab- & randomly oriented LDH membranes showed clear size-based selectivity and H2 was found to preferentially permeate through the interlayer galleries. However, randomly oriented LDH membranes showed a much higher H2 selectivity possibly due to the decreased density of mesoscopic defects. Furthermore, in addition to the NiAl-CO3 LDH membrane, a compact and randomly oriented ZnAl-NO3 LDH membrane with reasonable gas selectivity was successfully prepared here by proper optimization of the synthesis conditions.
AB - Research on interlayer gallery-based gas and liquid separation has gained widespread attention. A series of layered materials like lamellar ZSM-5, graphene and its derivatives have been fabricated into membranes showing fascinating gas/liquid separation properties. Layered double hydroxides (LDHs) are prominent representatives of layered compounds composed of regularly arranged brucite-like 2D sheets. Here we successfully prepared well-intergrown NiAl-CO3 LDH membranes in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure of prepared membranes. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 0.6 μm thick LDH membranes, while randomly oriented 5 μm thick LDH membranes formed from CO2-saturated precursor solutions. Both ab- & randomly oriented LDH membranes showed clear size-based selectivity and H2 was found to preferentially permeate through the interlayer galleries. However, randomly oriented LDH membranes showed a much higher H2 selectivity possibly due to the decreased density of mesoscopic defects. Furthermore, in addition to the NiAl-CO3 LDH membrane, a compact and randomly oriented ZnAl-NO3 LDH membrane with reasonable gas selectivity was successfully prepared here by proper optimization of the synthesis conditions.
UR - http://www.scopus.com/inward/record.url?scp=84896915109&partnerID=8YFLogxK
U2 - 10.1039/c4ta00108g
DO - 10.1039/c4ta00108g
M3 - Article
AN - SCOPUS:84896915109
VL - 2
SP - 5716
EP - 5723
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 16
ER -