Academic Journal
Operando spectroscopy study of the carbon dioxide electro-reduction by iron species on nitrogen-doped carbon
| العنوان: | Operando spectroscopy study of the carbon dioxide electro-reduction by iron species on nitrogen-doped carbon |
|---|---|
| المؤلفون: | Genovese, C, Schuster, ME, Gibson, E, Gianolio, D, Posligua, V, Grau-Crespo, R, Cibin, G, Wells, PP, Garai, D, Solokha, V, Krick Calderon, S, Velasco-Velez, JJ, Ampelli, C, Perathoner, S, Held, G, Centi, G, Arrigo, R |
| المصدر: | Nature Communications , 9 , Article 935. (2018) |
| بيانات النشر: | Nature Publishing Group |
| سنة النشر: | 2018 |
| المجموعة: | University College London: UCL Discovery |
| الوصف: | The carbon–carbon coupling via electrochemical reduction of carbon dioxide represents the biggest challenge for using this route as platform for chemicals synthesis. Here we show that nanostructured iron (III) oxyhydroxide on nitrogen-doped carbon enables high Faraday efficiency (97.4%) and selectivity to acetic acid (61%) at very-low potential (−0.5 V vs silver/silver chloride). Using a combination of electron microscopy, operando X-ray spectroscopy techniques and density functional theory simulations, we correlate the activity to acetic acid at this potential to the formation of nitrogen-coordinated iron (II) sites as single atoms or polyatomic species at the interface between iron oxyhydroxide and the nitrogen-doped carbon. The evolution of hydrogen is correlated to the formation of metallic iron and observed as dominant reaction path over iron oxyhydroxide on oxygen-doped carbon in the overall range of negative potential investigated, whereas over iron oxyhydroxide on nitrogen-doped carbon it becomes important only at more negative potentials |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://discovery.ucl.ac.uk/id/eprint/10067810/1/s41467-018-03138-7.pdf; https://discovery.ucl.ac.uk/id/eprint/10067810/ |
| الاتاحة: | https://discovery.ucl.ac.uk/id/eprint/10067810/1/s41467-018-03138-7.pdf https://discovery.ucl.ac.uk/id/eprint/10067810/ |
| Rights: | open |
| رقم الانضمام: | edsbas.5B421A4B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |