Xu, S;
Han, X;
Ma, Y;
Duong, TD;
Lin, L;
Gibson, EK;
Sheveleva, A;
... Schröder, M; + view all
(2021)
Catalytic decomposition of NO2 over a copper-decorated metal–organic framework by non-thermal plasma.
Cell Reports Physical Science
, 2
(2)
, Article 100349. 10.1016/j.xcrp.2021.100349.
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Abstract
Efficient catalytic conversion of NO2 to non-harmful species remains an important target for research. State-of-the-art deNOx processes are based upon ammonia (NH3)-assisted selective catalytic reduction (NH3-SCR) over Cu-exchanged zeolites at elevated temperatures. Here, we describe a highly efficient non-thermal plasma (NTP) deNOx process catalyzed by a Cu-embedded metal-organic framework, Cu/MFM-300(Al), at room temperature. Under NTP activation at 25°C, Cu/MFM-300(Al) enables direct decomposition of NO2 into N2, NO, N2O, and O2 without the use of NH3 or other reducing agents. NO2 conversion of 96% with a N2 selectivity of 82% at a turnover frequency of 2.9 h−1 is achieved, comparable to leading NH3-SCR catalysts that use NH3 operating at 250°C–550°C. The mechanism for the rate-determining step (NO→N2) is elucidated by in operando diffuse reflectance infrared Fourier transform spectroscopy, and electron paramagnetic resonance spectroscopy confirms the formation of Cu2+⋯NO nitrosylic adducts on Cu/MFM-300(Al), which facilitates NO dissociation and results in the notable N2 selectivity.
| Type: | Article |
|---|---|
| Title: | Catalytic decomposition of NO2 over a copper-decorated metal–organic framework by non-thermal plasma |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.xcrp.2021.100349 |
| Publisher version: | http://doi.org/10.1016/j.xcrp.2021.100349 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10123108 |
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