scholarly journals Enhanced Activity of Titanocene Complex for Electrocatalytic Nitrogen Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 389
Author(s):  
Karol J. Fijalkowski
Keyword(s):  
Catalytic Activity ◽  
Reduction Reaction ◽  
Potential Range ◽  
Carbon Electrode ◽  
Nitrogen Flow ◽  
Permeable Membrane ◽  
Nitrogen Reduction ◽  
Working Solution ◽  
Flow Through ◽  
High Level

Enhanced titanocene (Cp2TiCl2) based electrocatalytic system for nitrogen reduction was shown, comprising glassy carbon electrode, high level of the catechol redox mediator, optimized binary THF/MeOH solvent and unique design of the reactor having ammonia permeable membrane at the outlet, which allowed constant nitrogen flow through the working solution during entire electrolysis without risk of evaporation of the solvent. Catalytic activity was observed in the potential range of (–1.5)–(–2.3) V, reaching TON of 2.83%, corresponding to the production of 0.566 μmol NH3 (9.64 μg) in 24 h hydrolysis at–2.3 V using 0.02 mmol TiCp2Cl2 (5 mg).

Single-atom transition metals supported on black phosphorene for electrochemical nitrogen reduction

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4903-4908 ◽  
Author(s):  
Kang Liu ◽  
Junwei Fu ◽  
Li Zhu ◽  
Xiaodong Zhang ◽  
Hongmei Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
Reduction Reaction ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Nitrogen Reduction ◽  
Mild Conditions ◽  
Black Phosphorene

Electrochemical nitrogen reduction reaction (NRR) is a promising route to produce ammonia under mild conditions. Single-atom W supported on BP was screened as a promising electrocatalyst with high catalytic activity, stability, and selectively for NRR.

scholarly journals Electrochemical Nitrogen Reduction to Ammonia by Mo2N: Catalysis or Decomposition?

2019 ◽  
Author(s):  
Bo Hu ◽  
maowei hu ◽  
Tianbiao Liu
Keyword(s):  
Catalytic Activity ◽  
Chemical Stability ◽  
Energy Efficient ◽  
Stability Problem ◽  
Reduction Reaction ◽  
Aqueous Electrolytes ◽  
Metal Nitrides ◽  
Research Practice ◽  
Nitrogen Reduction ◽  
Fast Chemical

<p>Electrocatalytic synthesis of ammonia from nitrogen (N<sub>2</sub>) representsa highly attractive approach to produce ammonia under more energy efficient and CO<sub>2</sub>-free conditions in comparison the well-known Haber-Bosch process. electrocatalytic N2 fixation has been under intensive exploration over last few years and has become a hot topic in catalysis. A number of heterogeneous electrocatalysts have been reported with various claimed performance for NRR recently. However, the research practice in this emerging field has been problematic as demonstrated in the submitted work.</p>Metal nitrides have been studied both theoretically and experimentally indicating their potential capability of electrocatalytic N<sub>2</sub>reduction. However, the nitrogen contained nature and chemical stability problem of the nitride materials could bring in ambiguous results. In the submitted manuscript, it is revealed that Mo<sub>2</sub>N could undergo fast chemical decomposition in aqueous electrolytes to generate ammonium (NH<sub>4</sub><sup>+</sup>) and showed no catalytic activity for NRR. <i><u>The present results call urgent attention to carefully evaluate the catalytic nature of nitrogen reduction reaction (NRR) by nitrogen containing materials.</u></i>In addition, we also highlight apparent pitfalls to avoid in determining catalytic NNR.

A DFT screening of single transition atoms supported on MoS2 as highly efficient electrocatalysts for the nitrogen reduction reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (18) ◽  
pp. 10035-10043 ◽  
Author(s):  
Xingwu Zhai ◽  
Lei Li ◽  
Xiaoyue Liu ◽  
Yafei Li ◽  
Jueming Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reduction Reaction ◽  
Nitrogen Reduction ◽  
Highly Efficient ◽  
Single Transition

Re@MoS2 possesses the best NRR catalytic activity with a limiting potential of −0.43 V among TM@MoS2 systems.

scholarly journals Electrochemical Nitrogen Reduction to Ammonia by Mo2N: Catalysis or Decomposition?

2019 ◽  
Author(s):  
Bo Hu ◽  
maowei hu ◽  
Lance Seefeldt ◽  
Tianbiao Liu
Keyword(s):  
Catalytic Activity ◽  
Chemical Stability ◽  
Energy Efficient ◽  
Stability Problem ◽  
Reduction Reaction ◽  
Aqueous Electrolytes ◽  
Metal Nitrides ◽  
Research Practice ◽  
Nitrogen Reduction ◽  
Fast Chemical

<p>Electrocatalytic synthesis of ammonia from nitrogen (N<sub>2</sub>) representsa highly attractive approach to produce ammonia under more energy efficient and CO<sub>2</sub>-free conditions in comparison the well-known Haber-Bosch process. electrocatalytic N2 fixation has been under intensive exploration over last few years and has become a hot topic in catalysis. A number of heterogeneous electrocatalysts have been reported with various claimed performance for NRR recently. However, the research practice in this emerging field has been problematic as demonstrated in the submitted work.</p>Metal nitrides have been studied both theoretically and experimentally indicating their potential capability of electrocatalytic N<sub>2</sub>reduction. However, the nitrogen contained nature and chemical stability problem of the nitride materials could bring in ambiguous results. In the submitted manuscript, it is revealed that Mo<sub>2</sub>N could undergo fast chemical decomposition in aqueous electrolytes to generate ammonium (NH<sub>4</sub><sup>+</sup>) and showed no catalytic activity for NRR. <i><u>The present results call urgent attention to carefully evaluate the catalytic nature of nitrogen reduction reaction (NRR) by nitrogen containing materials.</u></i>In addition, we also highlight apparent pitfalls to avoid in determining catalytic NNR.

Defective Fe3GeTe2 monolayer as a promising electrocatalyst for spontaneous nitrogen reduction reaction

2021 ◽  
Author(s):  
Zuju Ma ◽  
Chengwei Xiao ◽  
Zhitao Cui ◽  
Wei Du ◽  
Qiaohong Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Nitrogen Reduction

Defective Fe3GeTe2 exhibits high catalytic activity for the NRR involving six exothermic hydrogenation steps.

Metal free-covalent triazine frameworks as oxygen reduction reaction catalysts – structure–electrochemical activity relationship

2021 ◽  
Author(s):  
Turgut Sönmez ◽  
Kendra Solveig Belthle ◽  
Andree Iemhoff ◽  
Jan Uecker ◽  
Jens Artz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Carbon Electrode ◽  
Metal Free ◽  
Covalent Triazine Framework

A covalent triazine framework coated on glassy carbon electrode performs high catalytic activity towards the ORR.

Unveiling the Genesis of the High Catalytic Activity in Nickel Phthalocyanine for Electrochemical Ammonia Synthesis

2021 ◽  
Author(s):  
Shyamal Murmu ◽  
Sourav Paul ◽  
Samadhan Kapse ◽  
Ranjit Thapa ◽  
Santanu Chattopadhyay ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Ammonia Synthesis ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Nitrogen Reduction ◽  
Nickel Phthalocyanine ◽  
Bosch Process

Electrochemical ammonia synthesis by nitrogen reduction reaction (NRR) using economically efficient electrocatalyst can provide a substitute of Haber-Bosch process. However, identification of active sites responsible for the origination of catalytic...

scholarly journals The Role of Structured Carbon in Downsized Transition Metal-Based Electrocatalysts toward a Green Nitrogen Fixation

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1529
Author(s):  
Marcello Ferrara ◽  
Michele Melchionna ◽  
Paolo Fornasiero ◽  
Manuela Bevilacqua
Keyword(s):  
Nitrogen Fixation ◽  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Transition Metal ◽  
Reduction Reaction ◽  
Metal Species ◽  
Nanostructured Carbon ◽  
Nitrogen Reduction ◽  
Recent Trends

Electrocatalytic Nitrogen Reduction Reaction (NRR) to ammonia is one of the most recent trends of research in heterogeneous catalysis for sustainability. The stark challenges posed by the NRR arise from many factors, beyond the strongly unfavored thermodynamics. The design of efficient heterogeneous electrocatalysts must rely on a suitable interplay of different components, so that the majority of research is focusing on development of nanohybrids or nanocomposites that synergistically harness the NRR sequence. Nanostructured carbon is one of the most versatile and powerful conductive supports that can be combined with metal species in an opportune manner, so as to guide the correct proceeding of the reaction and boost the catalytic activity.

Two-dimensional molybdenum carbides: active electrocatalysts for the nitrogen reduction reaction

2020 ◽  
Vol 8 (45) ◽  
pp. 23947-23954
Author(s):  
Bikun Zhang ◽  
Jian Zhou ◽  
Stephen R. Elliott ◽  
Zhimei Sun
Keyword(s):  
Catalytic Activity ◽  
Reduction Reaction ◽  
Two Dimensional ◽  
High Nitrogen ◽  
Nitrogen Reduction ◽  
Molybdenum Carbides

1T-Mo2C, 2H-Mo2C and MoC2 (edge) exhibit high nitrogen reduction reaction (NRR) catalytic activity.

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