Journal ArticleDOI
High-Efficiency N2 Electroreduction Enabled by Se-Vacancy-Rich WSe2-x in Water-in-Salt Electrolytes.
TLDR
In this article , a Se-vacancy-rich WSe2-x catalyst in water-in-salt electrolyte (WISE) was used to achieve a high-efficiency NRR enabled by a Se2-X catalyst in WISE, achieving a faradaic efficiency of 62.5% and NH3 yield of 181.3 μg h-1 mg-1Abstract:
Electrocatalytic nitrogen reduction reaction (NRR) is a promising approach for renewable NH3 production, while developing the NRR electrocatalysis systems with both high activity and selectivity remains a significant challenge. Herein, we combine catalyst and electrolyte engineering to achieve a high-efficiency NRR enabled by a Se-vacancy-rich WSe2-x catalyst in water-in-salt electrolyte (WISE). Extensive characterizations, theoretical calculations, and in situ X-ray photoelectron/Raman spectroscopy reveal that WISE ensures suppressed H2 evolution, improved N2 affinity on the catalyst surface, as well as an enhanced π-back-donation ability of active sites, thereby promoting both activity and selectivity for the NRR. As a result, an excellent faradaic efficiency of 62.5% and NH3 yield of 181.3 μg h-1 mg-1 is achieved with WSe2-x in 12 m LiClO4, which is among the highest NRR performances reported to date.read more
Citations
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Journal ArticleDOI
Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis
TL;DR: In this article , the authors classify inorganic nitrogen sources that convert to each other under an applied voltage into three types, namely, abundant nitrogen, toxic nitrate (nitrite), and nitrogen oxides, and useful compounds such as ammonia, hydrazine, and hydroxylamine, with the goal of providing more critical insights into strategies to facilitate the development of our circular nitrogen economy.
Journal ArticleDOI
B-doped MoS2 for nitrate electroreduction to ammonia.
TL;DR: In this article , B-doped MoS2 nanosheet arrays were used as an efficient NO3RR catalyst, delivering an NH3-Faradaic efficiency of 92.3 % with the corresponding NH3 yield of 10.8 mg h-1 cm-2 at -0.7 V (RHE).
Journal ArticleDOI
Ultra-efficient N2 electroreduction achieved over a rhodium single-atom catalyst (Rh1/MnO2) in water-in-salt electrolyte
TL;DR: In this article , a single-atom catalytic nitrogen reduction reaction (NRR) using water-in-salt electrolytes (WISE) was reported by using an Rh single atom catalyst in WISE.
Journal ArticleDOI
Selenium-vacancy-rich WSe2 for nitrate electroreduction to ammonia.
TL;DR: In this paper , the authors demonstrated Se-vacancy-rich WSe2 (WSe2-x) nanoplatelets as a highly efficient NO3RR catalyst, exhibiting a NH3-Faradaic efficiency of 92.7 % with the corresponding NH3 yield of 2.42 mg h-1 cm-2 at -0.8 V.
Journal ArticleDOI
A vacancy engineered MnO2-x electrocatalyst promotes nitrate electroreduction to ammonia.
TL;DR: In this article , the authors constructed O-vacancies (OVs) on MnO2 nanosheets and the resulting OV-rich MnO 2-x showed a high NH3 yield of 3.34 mg h-1 cm-2 (at -1.0 V vs. RHE), together with the outstanding stability.
References
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Journal ArticleDOI
Rational design of electrocatalysts and photo(electro)catalysts for nitrogen reduction to ammonia (NH3) under ambient conditions
TL;DR: In this article, the rational design of electrocatalysts and photo(electro) catalysts for N2 reduction to NH3 under ambient conditions is highlighted, with a special emphasis on the relationship between their physicochemical properties and NH3 production performance.
Journal ArticleDOI
Structural Basis of Biological Nitrogen Fixation.
James B. Howard,Douglas C. Rees +1 more
TL;DR: An overview of the nitrogenase system is presented in this article that emphasizes the structural organization of the proteins and associated metalloclusters that have the remarkable ability to catalyse nitrogen fixation under ambient conditions.
Journal ArticleDOI
Single Mo Atom Supported on Defective Boron Nitride Monolayer as an Efficient Electrocatalyst for Nitrogen Fixation: A Computational Study
Jingxiang Zhao,Zhongfang Chen +1 more
TL;DR: The computations revealed that the single Mo atom supported by a defective BN nanosheet exhibits the highest catalytic activity for N2 fixation at room temperature through an enzymatic mechanism with a quite low overpotential of 0.19 V.
Journal ArticleDOI
Challenges and prospects in the catalysis of electroreduction of nitrogen to ammonia
Bryan H. R. Suryanto,Hoang Long Du,Dabin Wang,Jun Chen,Alexandr N. Simonov,Douglas R. MacFarlane +5 more
TL;DR: The electrochemical reduction of nitrogen is being intensely investigated as the basis for future ammonia production from renewable energy sources as mentioned in this paper, and the issue of catalyst selectivity and the approaches to promote the electrochemical nitrogen reduction reaction (NRR) over H2 production are discussed.
Journal ArticleDOI
A rigorous electrochemical ammonia synthesis protocol with quantitative isotope measurements
Suzanne Zamany Andersen,Viktor Colic,Sungeun Yang,Sungeun Yang,Jay A. Schwalbe,Adam C. Nielander,Joshua M. McEnaney,Kasper Enemark-Rasmussen,Jon G. Baker,Aayush R. Singh,Brian A. Rohr,Michael J. Statt,Sarah J. Blair,Stefano Mezzavilla,Jakob Kibsgaard,Peter Christian Kjærgaard Vesborg,Matteo Cargnello,Stacey F. Bent,Thomas F. Jaramillo,Ifan E. L. Stephens,Jens K. Nørskov,Ib Chorkendorff +21 more
TL;DR: A protocol for the electrochemical reduction of nitrogen to ammonia enables isotope-sensitive quantification of the ammonia produced and the identification and removal of contaminants, and should help to prevent false positives from appearing in the literature.
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