Ambient N2 fixation to NH3 at ambient conditions: Using Nb2O5 nanofiber as a high-performance electrocatalyst
By Jingrui Han, Zaichun Liu, Yongjun Ma, Guanwei Cui, Fengyu Xie, Faxing Wang, Yuping Wu, Shuyan Gao, Yuanhong Xu, Xuping Sun. Nano Energy, 2018
317 citations recorded by the source corpus.
Abstract Electrochemical reduction has emerged as an environmentally-benign and sustainable approach alternative to the Haber–Bosch process for artificial N2 fixation at ambient conditions, while the challenge associated with N2 activation underlines the demand of efficient electrocatalysts for the N2 reduction reaction (NRR). In this work, Nb2O5 nanofiber is experimentally proved to act as a non-noble-metal NRR electrocatalyst for N2 conversion to NH3 with high activity and selectivity. When tested in 0.1 M HCl, such Nb2O5 nanofiber achieves a high average NH3 yield (43.6 µg h−1 mg−1cat.) and a high Faradaic efficiency (9.26%) at − 0.55 V vs. reversible hydrogen electrode, rivaling the performances of most reported aqueous-based NRR electrocatalysts under ambient conditions and even comparable with those under high temperature and pressure. Notably, it also shows high stability during electrolysis and recycling test. The catalytic mechanism of NRR on Nb2O5 (181) surface is further discussed by density functional theory calculations.
Subfields: Catalysis, Materials Chemistry, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/7a4e684af43b26c5d40eb84fa9d07b4d0f90c7aa
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In Materials Chemistry
Citations in the corpus
- Review on photocatalytic and electrocatalytic artificial nitrogen fixation for ammonia synthesis at mild conditions: Advances, challenges and perspectives (2019, background): “1 M HCl, outperforming the most reported NRR electrocatalysts [142].”