Details
| Original language | English |
|---|---|
| Pages (from-to) | 6643-6651 |
| Number of pages | 9 |
| Journal | Chemistry - a European journal |
| Volume | 17 |
| Issue number | 24 |
| Publication status | Published - 5 May 2011 |
Abstract
We present an investigation on the influence of benzoic acid, acetic acid, and water on the syntheses of the Zr-based metal-organic frameworks Zr-bdc (UiO-66), Zr-bdc-NH2 (UiO- 66-NH2), Zr-bpdc (UiO-67), and Zr- tpdc-NH2 (UiO-68-NH2) (H2bdc: terephthalic acid, H2bpdc: biphenyl-4,4'- dicarboxylic acid, H2tpdc: terphenyl- 4,4"-dicarboxylic acid). By varying the amount of benzoic or acetic acid, the synthesis of Zr-bdc can be modulated. With increasing concentration of the modulator, the products change from intergrown to individual crystals, the size of which can be tuned. Addition of benzoic acid also affects the size and morphology of Zr-bpdc and, additionally, makes the synthesis of Zr-bpdc highly reproducible. The control of crystal and particle size is proven by powder XRD, SEM and dynamic light scattering (DLS) measurements. Thermogravimetric analysis (TGA) and Ar sorption experiments show that the materials from modulated syntheses can be activated and that they exhibit high specific surface areas. Water proved to be essential for the formation of well-ordered Zr-bdc-NH2. Zr- tpdc-NH2, a material with a structure analogous to that of Zr-bdc and Zr- bpdc, but with the longer, functionalized linker 2'-amino-1,1':4',1"-terphenyl- 4,4"-dicarboxylic acid, was obtained as single crystals. This allowed the first single-crystal structural analysis of a Zr-based metal-organic framework.
Keywords
- metal-organic frameworks, microporous materials, modulation approach, nanoparticles, zirconium
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- Organic Chemistry
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In: Chemistry - a European journal, Vol. 17, No. 24, 05.05.2011, p. 6643-6651.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modulated synthesis of Zr-based metal-organic frameworks
T2 - From nano to single crystals
AU - Schaate, Andreas
AU - Roy, Pascal
AU - Godt, Adelheid
AU - Lippke, Jann
AU - Waltz, Florian
AU - Wiebcke, Michael
AU - Behrens, Peter
PY - 2011/5/5
Y1 - 2011/5/5
N2 - We present an investigation on the influence of benzoic acid, acetic acid, and water on the syntheses of the Zr-based metal-organic frameworks Zr-bdc (UiO-66), Zr-bdc-NH2 (UiO- 66-NH2), Zr-bpdc (UiO-67), and Zr- tpdc-NH2 (UiO-68-NH2) (H2bdc: terephthalic acid, H2bpdc: biphenyl-4,4'- dicarboxylic acid, H2tpdc: terphenyl- 4,4"-dicarboxylic acid). By varying the amount of benzoic or acetic acid, the synthesis of Zr-bdc can be modulated. With increasing concentration of the modulator, the products change from intergrown to individual crystals, the size of which can be tuned. Addition of benzoic acid also affects the size and morphology of Zr-bpdc and, additionally, makes the synthesis of Zr-bpdc highly reproducible. The control of crystal and particle size is proven by powder XRD, SEM and dynamic light scattering (DLS) measurements. Thermogravimetric analysis (TGA) and Ar sorption experiments show that the materials from modulated syntheses can be activated and that they exhibit high specific surface areas. Water proved to be essential for the formation of well-ordered Zr-bdc-NH2. Zr- tpdc-NH2, a material with a structure analogous to that of Zr-bdc and Zr- bpdc, but with the longer, functionalized linker 2'-amino-1,1':4',1"-terphenyl- 4,4"-dicarboxylic acid, was obtained as single crystals. This allowed the first single-crystal structural analysis of a Zr-based metal-organic framework.
AB - We present an investigation on the influence of benzoic acid, acetic acid, and water on the syntheses of the Zr-based metal-organic frameworks Zr-bdc (UiO-66), Zr-bdc-NH2 (UiO- 66-NH2), Zr-bpdc (UiO-67), and Zr- tpdc-NH2 (UiO-68-NH2) (H2bdc: terephthalic acid, H2bpdc: biphenyl-4,4'- dicarboxylic acid, H2tpdc: terphenyl- 4,4"-dicarboxylic acid). By varying the amount of benzoic or acetic acid, the synthesis of Zr-bdc can be modulated. With increasing concentration of the modulator, the products change from intergrown to individual crystals, the size of which can be tuned. Addition of benzoic acid also affects the size and morphology of Zr-bpdc and, additionally, makes the synthesis of Zr-bpdc highly reproducible. The control of crystal and particle size is proven by powder XRD, SEM and dynamic light scattering (DLS) measurements. Thermogravimetric analysis (TGA) and Ar sorption experiments show that the materials from modulated syntheses can be activated and that they exhibit high specific surface areas. Water proved to be essential for the formation of well-ordered Zr-bdc-NH2. Zr- tpdc-NH2, a material with a structure analogous to that of Zr-bdc and Zr- bpdc, but with the longer, functionalized linker 2'-amino-1,1':4',1"-terphenyl- 4,4"-dicarboxylic acid, was obtained as single crystals. This allowed the first single-crystal structural analysis of a Zr-based metal-organic framework.
KW - metal-organic frameworks
KW - microporous materials
KW - modulation approach
KW - nanoparticles
KW - zirconium
UR - http://www.scopus.com/inward/record.url?scp=79957934383&partnerID=8YFLogxK
U2 - 10.1002/chem.201003211
DO - 10.1002/chem.201003211
M3 - Article
AN - SCOPUS:79957934383
VL - 17
SP - 6643
EP - 6651
JO - Chemistry - a European journal
JF - Chemistry - a European journal
SN - 0947-6539
IS - 24
ER -