TY - JOUR
T1 - Influence of Precursor Density and Conversion Time on the Orientation of Vapor-Deposited ZIF-8
AU - Kräuter, Marianne
AU - Cruz, Alexander John
AU - Stassin, Timothée
AU - Rodríguez-Hermida, Sabina
AU - Ameloot, Rob
AU - Resel, Roland
AU - Coclite, Anna Maria
N1 - Funding Information:
Funding: The financial support of the Lead project LP-03 “Porous Materials@Work” of the Graz University of Technology is gratefully acknowledged. T.S. thanks the Research Foundation Flanders (FWO) for an SB-PhD fellowship (1S53316N).
Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/2
Y1 - 2022/2
N2 - ZIF-8 was synthesized by subjecting ZnO thin films deposited via plasma-enhanced atomic layer deposition to a 2-methylimidazole vapor. The impact of the conversion time as well as the density and thickness of the ZnO precursor on the resulting ZIF-8 layers were investigated. Grazing Incidence X-ray diffraction reveals a preferred (100) or (111) orientation of the ZIF-8 crystals, depending on thickness and density of the precursor, and with a more prominent orientation at longer conversion times. The onset of crystallization occurs after 20 min of conversion for the less dense precursor, compared to 40 min for the denser one. The ZIF-8 thickness and roughness increase with conversion time. The final thickness of the ZIF-8 layer depends on the thickness and density of the precursor layer, and can be up to 15-fold higher than the precursor thickness.
AB - ZIF-8 was synthesized by subjecting ZnO thin films deposited via plasma-enhanced atomic layer deposition to a 2-methylimidazole vapor. The impact of the conversion time as well as the density and thickness of the ZnO precursor on the resulting ZIF-8 layers were investigated. Grazing Incidence X-ray diffraction reveals a preferred (100) or (111) orientation of the ZIF-8 crystals, depending on thickness and density of the precursor, and with a more prominent orientation at longer conversion times. The onset of crystallization occurs after 20 min of conversion for the less dense precursor, compared to 40 min for the denser one. The ZIF-8 thickness and roughness increase with conversion time. The final thickness of the ZIF-8 layer depends on the thickness and density of the precursor layer, and can be up to 15-fold higher than the precursor thickness.
KW - Metal-organic framework
KW - PE-ALD
KW - Vapor phase conversion
KW - Zeolitic imidazole framework
KW - Zinc oxide
UR - http://www.scopus.com/inward/record.url?scp=85124022021&partnerID=8YFLogxK
U2 - 10.3390/cryst12020217
DO - 10.3390/cryst12020217
M3 - Article
AN - SCOPUS:85124022021
SN - 2073-4352
VL - 12
JO - Crystals
JF - Crystals
IS - 2
M1 - 217
ER -