CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin
The <i>meso</i>-tetrakis(4-(trifluoromethyl)phenyl)porphyrinato cobalt(II) complex [Co(TMFPP)] was synthesised in 93% yield. The compound was studied by <sup>1</sup>H NMR, UV-visible absorption, and photoluminescence spectroscopy. The optical band gap <i>E</i>g wa...
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MDPI AG
2022-03-01
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| author | Mouhieddinne Guergueb Frédérique Loiseau Florian Molton Habib Nasri Axel Klein |
| author_facet | Mouhieddinne Guergueb Frédérique Loiseau Florian Molton Habib Nasri Axel Klein |
| author_sort | Mouhieddinne Guergueb |
| collection | DOAJ |
| description | The <i>meso</i>-tetrakis(4-(trifluoromethyl)phenyl)porphyrinato cobalt(II) complex [Co(TMFPP)] was synthesised in 93% yield. The compound was studied by <sup>1</sup>H NMR, UV-visible absorption, and photoluminescence spectroscopy. The optical band gap <i>E</i>g was calculated to 2.15 eV using the Tauc plot method and a semiconducting character is suggested. Cyclic voltammetry showed two fully reversible reduction waves at <i>E</i><sub>1/2</sub> = −0.91 V and <i>E</i><sub>1/2</sub> = −2.05 V vs. SCE and reversible oxidations at 0.30 V and 0.98 V representing both metal-centred (Co(0)/Co(I)/Co(II)/Co(III)) and porphyrin-centred (Por<sup>2−</sup>/Por<sup>−</sup>) processes. [Co(TMFPP)] is a very active catalyst for the electrochemical formation of H<sub>2</sub> from DMF/acetic acid, with a Faradaic Efficiency (FE) of 85%, and also catalysed the reduction of CO<sub>2</sub> to CO with a FE of 90%. Moreover, the two triarylmethane dyes crystal violet and malachite green were decomposed using H<sub>2</sub>O<sub>2</sub> and [Co(TMFPP)] as catalyst with an efficiency of more than 85% in one batch. |
| first_indexed | 2024-03-09T20:28:45Z |
| format | Article |
| id | doaj.art-06d673b60a8b4d14ab567581b70cee46 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T20:28:45Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-06d673b60a8b4d14ab567581b70cee462023-11-23T23:28:31ZengMDPI AGMolecules1420-30492022-03-01275170510.3390/molecules27051705CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-TetraarylporphyrinMouhieddinne Guergueb0Frédérique Loiseau1Florian Molton2Habib Nasri3Axel Klein4Faculty of Sciences of Monastir, University of Monastir, Avenue de l’Environnement, Monastir 5019, TunisiaDépartement de Chimie Moléculaire (DCM), CNRS UMR 5250, Université Grenoble Alpes, F-38000 Grenoble, FranceDépartement de Chimie Moléculaire (DCM), CNRS UMR 5250, Université Grenoble Alpes, F-38000 Grenoble, FranceFaculty of Sciences of Monastir, University of Monastir, Avenue de l’Environnement, Monastir 5019, TunisiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Institute for Inorganic Chemistry, University of Cologne, 50939 Cologne, GermanyThe <i>meso</i>-tetrakis(4-(trifluoromethyl)phenyl)porphyrinato cobalt(II) complex [Co(TMFPP)] was synthesised in 93% yield. The compound was studied by <sup>1</sup>H NMR, UV-visible absorption, and photoluminescence spectroscopy. The optical band gap <i>E</i>g was calculated to 2.15 eV using the Tauc plot method and a semiconducting character is suggested. Cyclic voltammetry showed two fully reversible reduction waves at <i>E</i><sub>1/2</sub> = −0.91 V and <i>E</i><sub>1/2</sub> = −2.05 V vs. SCE and reversible oxidations at 0.30 V and 0.98 V representing both metal-centred (Co(0)/Co(I)/Co(II)/Co(III)) and porphyrin-centred (Por<sup>2−</sup>/Por<sup>−</sup>) processes. [Co(TMFPP)] is a very active catalyst for the electrochemical formation of H<sub>2</sub> from DMF/acetic acid, with a Faradaic Efficiency (FE) of 85%, and also catalysed the reduction of CO<sub>2</sub> to CO with a FE of 90%. Moreover, the two triarylmethane dyes crystal violet and malachite green were decomposed using H<sub>2</sub>O<sub>2</sub> and [Co(TMFPP)] as catalyst with an efficiency of more than 85% in one batch.https://www.mdpi.com/1420-3049/27/5/1705cobalt(II) porphyrinscyclic voltammetryelectrocatalytic hydrogen evolutionelectroreduction CO<sub>2</sub> to COcatalytic degradation of dyes |
| spellingShingle | Mouhieddinne Guergueb Frédérique Loiseau Florian Molton Habib Nasri Axel Klein CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin Molecules cobalt(II) porphyrins cyclic voltammetry electrocatalytic hydrogen evolution electroreduction CO<sub>2</sub> to CO catalytic degradation of dyes |
| title | CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin |
| title_full | CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin |
| title_fullStr | CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin |
| title_full_unstemmed | CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin |
| title_short | CO<sub>2</sub> to CO Electroreduction, Electrocatalytic H<sub>2</sub> Evolution, and Catalytic Degradation of Organic Dyes Using a Co(II) <i>meso</i>-Tetraarylporphyrin |
| title_sort | co sub 2 sub to co electroreduction electrocatalytic h sub 2 sub evolution and catalytic degradation of organic dyes using a co ii i meso i tetraarylporphyrin |
| topic | cobalt(II) porphyrins cyclic voltammetry electrocatalytic hydrogen evolution electroreduction CO<sub>2</sub> to CO catalytic degradation of dyes |
| url | https://www.mdpi.com/1420-3049/27/5/1705 |
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