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- Title
Greatly Improving Electrochemical N<sub>2</sub> Reduction over TiO<sub>2</sub> Nanoparticles by Iron Doping.
- Authors
Wu, Tongwei; Zhu, Xiaojuan; Xing, Zhe; Mou, Shiyong; Li, Chengbo; Qiao, Yanxia; Liu, Qian; Luo, Yonglan; Shi, Xifeng; Zhang, Yanning; Sun, Xuping
- Abstract
Titanium‐based catalysts are needed to achieve electrocatalytic N2 reduction to NH3 with a large NH3 yield and a high Faradaic efficiency (FE). One of the cheapest and most abundant metals on earth, iron, is an effective dopant for greatly improving the nitrogen reduction reaction (NRR) performance of TiO2 nanoparticles in ambient N2‐to‐NH3 conversion. In 0.5 m LiClO4, Fe‐doped TiO2 catalyst attains a high FE of 25.6 % and a large NH3 yield of 25.47 μg h−1 mgcat−1 at −0.40 V versus a reversible hydrogen electrode. This performance compares favorably to those of all previously reported titanium‐ and iron‐based NRR electrocatalysts in aqueous media. The catalytic mechanism is further probed with theoretical calculations.
- Subjects
ELECTROLYTIC reduction; STANDARD hydrogen electrode; NANOPARTICLES; ELECTROCATALYSTS; METALS; DOPING agents (Chemistry); IRON alloys
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 51, p18620
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201911153