Details
| Original language | English |
|---|---|
| Article number | e202300109 |
| Number of pages | 8 |
| Journal | CHEMPLUSCHEM |
| Volume | 88 |
| Issue number | 4 |
| Early online date | 6 Mar 2023 |
| Publication status | Published - 3 Apr 2023 |
Abstract
The selective detection of hydrogen sulfide (H2 S) is an important task because of its potentially hazardous effects not only on the environment but also on human health. Here, we present the zirconium-based MOF-808, which was modified with copper salts, as a colorimetric sensor material for the visible, reversible and sensitive H2 S detection at room temperature. The copper cations, which are incorporated in the oxidation state +II, are installed at the inorganic building units (IBUs) of the framework so that they are accessible for interactions with H2 S. The activated copper doped MOF-808 powder shows significant and fast color change in the presence of H2 S, which can be detected by UV-vis spectroscopy. Moreover, the detection process is reversible by heating the material to 120 °C under ambient conditions leading to its decolorization. The detection performance of the material was studied by in situ UV-vis measurements in a reaction chamber. The material was able to respond to 100 ppm H2 S in several cycles of exposure and heating to 120 °C under moist air conditions in a defined wavelength range. This reversibility is very uncommon for copper-based H2 S sensing reactions and highlights the potential of MOFs as selective sensing materials.
Keywords
- colorimetric sensors, copper, gas sensors, hydrogen sulfide, metal-organic frameworks
ASJC Scopus subject areas
Sustainable Development Goals
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In: CHEMPLUSCHEM, Vol. 88, No. 4, e202300109, 03.04.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Cu-MOF-808 as a Sensing Material for Gaseous Hydrogen Sulfide
AU - Marquardt, Nele
AU - Dahlke, Melina
AU - Schaate, Andreas
N1 - Funding Information: General support and fruitful discussions with Prof. Dr. Peter Behrens are gratefully acknowledged. The authors would like to thank the Hannover School for Nanotechnology (hsn) which is based in the Laboratory for Nano and Quantum Engineering (LNQE) for financial funding. Open Access funding enabled and organized by Projekt DEAL.
PY - 2023/4/3
Y1 - 2023/4/3
N2 - The selective detection of hydrogen sulfide (H2 S) is an important task because of its potentially hazardous effects not only on the environment but also on human health. Here, we present the zirconium-based MOF-808, which was modified with copper salts, as a colorimetric sensor material for the visible, reversible and sensitive H2 S detection at room temperature. The copper cations, which are incorporated in the oxidation state +II, are installed at the inorganic building units (IBUs) of the framework so that they are accessible for interactions with H2 S. The activated copper doped MOF-808 powder shows significant and fast color change in the presence of H2 S, which can be detected by UV-vis spectroscopy. Moreover, the detection process is reversible by heating the material to 120 °C under ambient conditions leading to its decolorization. The detection performance of the material was studied by in situ UV-vis measurements in a reaction chamber. The material was able to respond to 100 ppm H2 S in several cycles of exposure and heating to 120 °C under moist air conditions in a defined wavelength range. This reversibility is very uncommon for copper-based H2 S sensing reactions and highlights the potential of MOFs as selective sensing materials.
AB - The selective detection of hydrogen sulfide (H2 S) is an important task because of its potentially hazardous effects not only on the environment but also on human health. Here, we present the zirconium-based MOF-808, which was modified with copper salts, as a colorimetric sensor material for the visible, reversible and sensitive H2 S detection at room temperature. The copper cations, which are incorporated in the oxidation state +II, are installed at the inorganic building units (IBUs) of the framework so that they are accessible for interactions with H2 S. The activated copper doped MOF-808 powder shows significant and fast color change in the presence of H2 S, which can be detected by UV-vis spectroscopy. Moreover, the detection process is reversible by heating the material to 120 °C under ambient conditions leading to its decolorization. The detection performance of the material was studied by in situ UV-vis measurements in a reaction chamber. The material was able to respond to 100 ppm H2 S in several cycles of exposure and heating to 120 °C under moist air conditions in a defined wavelength range. This reversibility is very uncommon for copper-based H2 S sensing reactions and highlights the potential of MOFs as selective sensing materials.
KW - colorimetric sensors
KW - copper
KW - gas sensors
KW - hydrogen sulfide
KW - metal-organic frameworks
UR - http://www.scopus.com/inward/record.url?scp=85151575208&partnerID=8YFLogxK
U2 - 10.1002/cplu.202300109
DO - 10.1002/cplu.202300109
M3 - Article
C2 - 36877570
AN - SCOPUS:85151575208
VL - 88
JO - CHEMPLUSCHEM
JF - CHEMPLUSCHEM
SN - 2192-6506
IS - 4
M1 - e202300109
ER -