Journal ArticleDOI
MoO3 nanosheets for efficient electrocatalytic N2 fixation to NH3
Jingrui Han,Xuqiang Ji,Xiang Ren,Guanwei Cui,Lei Li,Fengyu Xie,Hui Wang,Baihai Li,Xuping Sun +8 more
TLDR
In this article, a non-noble-metal MoO3 nanosheets act as an efficient nonnoble metal catalyst for electrochemical N2 fixation to NH3 with excellent selectivity at room temperature and atmospheric pressure.Abstract:
The synthesis of NH3 heavily depends on the energy-intensive Haber–Bosch process with a large amount of greenhouse gas emission. Electrochemical reduction offers a carbon-neutral process to convert N2 to NH3 at ambient conditions, but requires efficient and stable catalysts for the N2 reduction reaction. Mo-dependent nitrogenases and synthetic molecular complexes have attracted increasing attention for N2 fixation; however, less attention has been paid to Mo-based nanocatalysts for electrochemical N2 conversion to NH3. Herein, we report that MoO3 nanosheets act as an efficient non-noble-metal catalyst for electrochemical N2 fixation to NH3 with excellent selectivity at room temperature and atmospheric pressure. In 0.1 M HCl, this catalyst exhibits remarkable NRR activity with an NH3 yield of 4.80 × 10−10 mol s−1 cm−2 (29.43 μg h−1 mgcat.−1) and a faradaic efficiency of 1.9%. Moreover, this catalyst also shows high electrochemical stability and durability. Density functional theory calculations reveal that the outermost Mo atoms serve as the active sites for effective N2 adsorption.read more
Citations
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Journal ArticleDOI
High-performance artificial nitrogen fixation at ambient conditions using a metal-free electrocatalyst
Weibin Qiu,Weibin Qiu,Xiao-Ying Xie,Jian-Ding Qiu,Wei-Hai Fang,Ru-Ping Liang,Xiang Ren,Xuqiang Ji,Guanwei Cui,Abdullah M. Asiri,Ganglong Cui,Bo Tang,Xuping Sun +12 more
TL;DR: A metal-free catalyst that selectively reduces nitrogen to ammonia with high efficiency and stability is reported, placing it among the most active aqueous-based nitrogen reduction reaction electrocatalysts.
Journal ArticleDOI
Recent Advances and Challenges of Electrocatalytic N2 Reduction to Ammonia.
Geletu Qing,Reza Ghazfar,Shane T. Jackowski,Faezeh Habibzadeh,Mona Maleka Ashtiani,Chuan Pin Chen,Milton R. Smith,Thomas W. Hamann +7 more
TL;DR: This review provides a comprehensive account of theoretical and experimental studies on electrochemical nitrogen fixation with a focus on the low selectivity for reduction of N2 to ammonia versus protons to H2.
Journal ArticleDOI
Boosted Electrocatalytic N2 Reduction to NH3 by Defect-Rich MoS2 Nanoflower
Xianghong Li,Xianghong Li,Tingshuai Li,Yongjun Ma,Qin Wei,Weibin Qiu,Haoran Guo,Xifeng Shi,Peng Zhang,Abdullah M. Asiri,Liang Chen,Bo Tang,Xuping Sun +12 more
TL;DR: In this article, a defect-rich MoS2 nanoflowers was used for electrocatalytic N-2 reduction to NH3 with excellent selectivity, achieving a high Faradic efficiency of 8.34% and a high NH3 yield of 29.68 eV.
Journal ArticleDOI
Electrochemical nitrogen fixation and utilization: theories, advanced catalyst materials and system design.
TL;DR: Electrochemical techniques for nitrogen fixation and transformation under mild conditions are promising approaches to meet the challenge of efficiently managing and balancing the nitrogen cycle, where the rational design of advanced electrocatalysts from both structural and compositional aspects down to the nanoscale plays the most essential role.
Journal ArticleDOI
Defect engineering in earth-abundant electrocatalysts for CO2 and N2 reduction
TL;DR: In this article, the type, regulation strategy, fine defect characterization methods, and their application in the electrocatalytic CO2 reduction reaction (CRR) and N 2 reduction reaction(NRR) are discussed and summarized, and major challenges, opportunities, and future development direction of defect engineering in CRR and NRR catalysts are proposed.
References
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Journal ArticleDOI
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