Academic Journal
Unveiling the Proton‐Feeding Effect in Sulfur‐Doped Fe−N−C Single‐Atom Catalyst for Enhanced CO 2 Electroreduction
| العنوان: | Unveiling the Proton‐Feeding Effect in Sulfur‐Doped Fe−N−C Single‐Atom Catalyst for Enhanced CO 2 Electroreduction |
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| المؤلفون: | Chen, Shanyong, Li, Xiaoqing, Kao, Cheng‐Wei, Luo, Tao, Chen, Kejun, Fu, Junwei, Ma, Chao, Li, Hongmei, Li, Ming, Chan, Ting‐Shan, Liu, Min |
| المساهمون: | National Natural Science Foundation of China, International Science and Technology Cooperation Programme, China Postdoctoral Science Foundation, Basic and Applied Basic Research Foundation of Guangdong Province, Ministry of Science and Technology, Taiwan |
| المصدر: | Angewandte Chemie International Edition ; volume 61, issue 32 ; ISSN 1433-7851 1521-3773 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2022 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Heteroatom‐doping in metal‐nitrogen‐carbon single‐atom catalysts (SACs) is considered a powerful strategy to promote the electrocatalytic CO 2 reduction reaction (CO 2 RR), but the origin of enhanced catalytic activity is still elusive. Here, we disclose that sulfur doping induces an obvious proton‐feeding effect for CO 2 RR. The model SAC catalyst with sulfur doping in the second‐shell of FeN 4 (Fe 1 −NSC) was verified by X‐ray absorption spectroscopy and aberration‐corrected scanning transmission electron microscopy. Fe 1 −NSC exhibits superior CO 2 RR performance compared to sulfur‐free FeN 4 and most reported Fe‐based SACs, with a maximum CO Faradaic efficiency of 98.6 % and turnover frequency of 1197 h −1 . Kinetic analysis and in situ characterizations confirm that sulfur doping accelerates H 2 O activation and feeds sufficient protons for promoting CO 2 conversion to *COOH, which is also corroborated by the theoretical results. This work deepens the understanding of the CO 2 RR mechanism based on SAC catalysts. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/anie.202206233 |
| الاتاحة: | https://doi.org/10.1002/anie.202206233 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202206233 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/anie.202206233 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.F07ACEE0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/anie.202206233 |
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