Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 14175-14181 |
| Seitenumfang | 7 |
| Fachzeitschrift | ACS Applied Materials and Interfaces |
| Jahrgang | 11 |
| Ausgabenummer | 15 |
| Frühes Online-Datum | 22 März 2019 |
| Publikationsstatus | Veröffentlicht - 17 Apr. 2019 |
Abstract
Increasing demands in the field of sensing, especially for gas detection applications, require new approaches to chemical sensors. Metal-organic frameworks (MOFs) can play a decisive role owing to their outstanding performances regarding gas selectivity and sensitivity. The tetrathiafulvalene (TTF)-infiltrated MOF, Co-MOF-74, has been prepared following the host-guest concept and evaluated in resistive gas sensing. The Co-MOF-74-TTF crystal morphology has been characterized via X-ray diffraction and scanning electron microscopy, while the successful incorporation of TTF into the MOF has been validated via X-ray photoemission spectroscopy, thermogravimetric analysis, UV/vis, infrared (IR), and Raman investigations. We demonstrate a reduced yet ample uptake of CO 2 in the pores of the new material by IR imaging and adsorption isotherms. The nanocomposite Co-MOF-74-TTF exhibits an increased electrical conductivity in comparison to Co-MOF-74 which can be influenced by gas adsorption from a surrounding atmosphere. This effect could be used for gas sensing.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
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in: ACS Applied Materials and Interfaces, Jahrgang 11, Nr. 15, 17.04.2019, S. 14175-14181.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Metal−Organic Framework Co-MOF-74-Based Host−Guest Composites for Resistive Gas Sensing
AU - Strauss, Ina
AU - Mundstock, Alexander
AU - Treger, Marvin
AU - Lange, Karsten
AU - Hwang, Seungtaik
AU - Chmelik, Christian
AU - Rusch, Pascal
AU - Bigall, Nadja C.
AU - Pichler, Thomas
AU - Shiozawa, Hidetsugu
AU - Caro, Jürgen
N1 - Funding information: We are grateful for the financial support from the Hannover School for Nanotechnology (HSN), organized by R. Haug and F. Schulze-Wischeler. I.S. thanks Dirk Dorfs for access to the UV/vis spectrometer. P.R. and N.C.B. thank the European Research Council (ERC) for financial support (grant agreement no. 714429). T.P. and H.S. are grateful for the financial support by the Austrian Science Fund (FWF, P30431-N36 and P27769-N20) and MSMT project ERC-CZ (LL1301).
PY - 2019/4/17
Y1 - 2019/4/17
N2 - Increasing demands in the field of sensing, especially for gas detection applications, require new approaches to chemical sensors. Metal-organic frameworks (MOFs) can play a decisive role owing to their outstanding performances regarding gas selectivity and sensitivity. The tetrathiafulvalene (TTF)-infiltrated MOF, Co-MOF-74, has been prepared following the host-guest concept and evaluated in resistive gas sensing. The Co-MOF-74-TTF crystal morphology has been characterized via X-ray diffraction and scanning electron microscopy, while the successful incorporation of TTF into the MOF has been validated via X-ray photoemission spectroscopy, thermogravimetric analysis, UV/vis, infrared (IR), and Raman investigations. We demonstrate a reduced yet ample uptake of CO 2 in the pores of the new material by IR imaging and adsorption isotherms. The nanocomposite Co-MOF-74-TTF exhibits an increased electrical conductivity in comparison to Co-MOF-74 which can be influenced by gas adsorption from a surrounding atmosphere. This effect could be used for gas sensing.
AB - Increasing demands in the field of sensing, especially for gas detection applications, require new approaches to chemical sensors. Metal-organic frameworks (MOFs) can play a decisive role owing to their outstanding performances regarding gas selectivity and sensitivity. The tetrathiafulvalene (TTF)-infiltrated MOF, Co-MOF-74, has been prepared following the host-guest concept and evaluated in resistive gas sensing. The Co-MOF-74-TTF crystal morphology has been characterized via X-ray diffraction and scanning electron microscopy, while the successful incorporation of TTF into the MOF has been validated via X-ray photoemission spectroscopy, thermogravimetric analysis, UV/vis, infrared (IR), and Raman investigations. We demonstrate a reduced yet ample uptake of CO 2 in the pores of the new material by IR imaging and adsorption isotherms. The nanocomposite Co-MOF-74-TTF exhibits an increased electrical conductivity in comparison to Co-MOF-74 which can be influenced by gas adsorption from a surrounding atmosphere. This effect could be used for gas sensing.
KW - conducting MOFs
KW - gas sensing
KW - Guest@MOF
KW - infiltration of MOFs
KW - tetrathiafulvalene
UR - http://www.scopus.com/inward/record.url?scp=85064127909&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b22002
DO - 10.1021/acsami.8b22002
M3 - Article
C2 - 30900448
AN - SCOPUS:85064127909
VL - 11
SP - 14175
EP - 14181
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
SN - 1944-8244
IS - 15
ER -