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.

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.

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...

Ordered Intermetallic Nanoparticles with High Catalytic Activity Prepared by an Electrochemically Induced Phase Transformation

2019 ◽  
Author(s):  
Du Sun ◽  
yunfei wang ◽  
Kenneth Livi ◽  
chuhong wang ◽  
ruichun luo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Diffusion Mechanism ◽  
Reduction Reaction ◽  
Atomic Scale ◽  
High Catalytic Activity ◽  
Ambient Conditions ◽  
Magnetic Devices ◽  
Disordered Alloys ◽  
Ordered Intermetallic ◽  
Intermetallic Nanoparticles

<div> <p>The synthesis of alloys with long range atomic scale ordering (ordered intermetallics) is an emerging field of nanochemistry. Ordered intermetallic nanoparticles are useful for a wide variety of applications such as catalysis, superconductors, and magnetic devices. However, the preparation of nanostructured ordered intermetallics is challenging in comparison to disordered alloys, hindering progress in materials development. We report a process for converting colloidally synthesized ordered intermetallic PdBi<sub>2</sub> to ordered intermetallic Pd<sub>3</sub>Bi nanoparticles under ambient conditions by an electrochemically induced phase transition. The low melting point of PdBi<sub>2</sub> corresponds to low vacancy formation energies which enables the facile removal of the Bi from the surface, while simultaneously enabling interdiffusion of the constituent atoms via a vacancy diffusion mechanism under ambient conditions. The resulting phase-converted ordered intermetallic Pd<sub>3</sub>Bi exhibits 11x and 3.5x higher mass activty and high methanol tolerance for the oxygen reduction reaction compared to Pt/C and Pd/C, respectively,which is the highest reported for a Pd-based catalyst, to the best of our knowledge. These results establish a key development in the synthesis of noble metal rich ordered intermetallic phases with high catalytic activity, and sets forth guidelines for the design of ordered intermetallic compounds under ambient conditions.</p> </div>

scholarly journals Improving the Performance of Zn-Air Batteries with N-Doped Electroexfoliated Graphene

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2115 ◽  
Author(s):  
Anna Ilnicka ◽  
Malgorzata Skorupska ◽  
Piotr Romanowski ◽  
Piotr Kamedulski ◽  
Jerzy P. Lukaszewicz
Keyword(s):  
Catalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Noble Metals ◽  
Electrode Materials ◽  
Low Cost ◽  
Rapid Development ◽  
Reduction Reaction ◽  
Graphene Sheets ◽  
High Catalytic Activity ◽  
Energy Storage Devices

The constantly growing demand for active, durable, and low-cost electrocatalysts usable in energy storage devices, such as supercapacitors or electrodes in metal-air batteries, has triggered the rapid development of heteroatom-doped carbon materials, which would, among other things, exhibit high catalytic activity in the oxygen reduction reaction (ORR). In this article, a method of synthesizing nitrogen-doped graphene is proposed. Few-layered graphene sheets (FL-graphene) were prepared by electrochemical exfoliation of commercial graphite in a Na2SO4 electrolyte with added calcium carbonate as a separator of newly-exfoliated FL-graphene sheets. Exfoliated FL-graphene was impregnated with a suspension of green algae used as a nitrogen carrier. Impregnated FL-graphene was carbonized at a high temperature under the flow of nitrogen. The N-doped FL-graphene was characterized through instrumental methods: high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. Electrochemical performance was determined using cyclic voltamperometry and linear sweep voltamperometry to check catalytic activity in ORR. The N-doped electroexfoliated FL-graphene obeyed the four-electron transfer pathways, leading us to further test these materials as electrode components in rechargeable zinc-air batteries. The obtained results for Zn-air batteries are very important for future development of industry, because the proposed graphene electrode materials do not contain any heavy and noble metals in their composition.

One-pot synthesis of Co/N-doped mesoporous graphene with embedded Co/CoOx nanoparticles for efficient oxygen reduction reaction

Nanoscale ◽  
2017 ◽  
Vol 9 (29) ◽  
pp. 10233-10239 ◽  
Author(s):  
Yanli Niu ◽  
Xiaoqin Huang ◽  
Xiaoshuai Wu ◽  
Lei Zhao ◽  
Weihua Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
One Pot ◽  
One Pot Synthesis

Exploration of sustainable electrocatalysts toward oxygen reduction reaction (ORR) with high catalytic activity remains a key challenge in the development of metal–air batteries and fuel cells.

Palladium copper nanosponges for electrocatalytic reduction of oxygen and glucose detection

2015 ◽  
Vol 3 (18) ◽  
pp. 9675-9681 ◽  
Author(s):  
Wen-Ping Wu ◽  
Arun Prakash Periasamy ◽  
Guan-Lin Lin ◽  
Zih-Yu Shih ◽  
Huan-Tsung Chang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Glucose Detection ◽  
Cathode Catalyst ◽  
Electrocatalytic Reduction ◽  
One Pot

One-pot synthesized PdCu nanosponges (NSs) are separately used as a cathode catalyst for the oxygen reduction reaction in alkaline media and for enzymeless detection of glucose with high catalytic activity, stability, and durability.

scholarly journals La1−xAgxMnO3 electrocatalyst with high catalytic activity for oxygen reduction reaction in aluminium air batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 5214-5221 ◽  
Author(s):  
Yejian Xue ◽  
He Miao ◽  
Shanshan Sun ◽  
Qin Wang ◽  
Shihua Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Activity ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Ag Doping

Ag doping is one of the best methods for improving the catalytic activity of LaMnO3 perovskites, and the mass specific activity of LAM-30 (La0.7Ag0.3MnO3) can reach 48.0 mA mg−1 which is about 32 times that of LAM-0 (LaMnO3).

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.

scholarly journals Bifunctional electrochemical properties of La0.8Sr0.2Co0.8M0.2O3-δ (M= Ni, Fe, Mn, Cu): efficient elemental doping based on structural and pH-dependent study

2021 ◽  
Author(s):  
Junfang Cheng ◽  
Pandian Ganesan ◽  
Ziling Wang ◽  
Ming Zhang ◽  
Guozhu Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Perovskite Oxides ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Suitable Candidate ◽  
Ph Dependent ◽  
Elemental Doping

Perovskite oxides with a low cost and high catalytic activity are considered as suitable candidate for oxygen evolution reaction (OER)/oxygen reduction reaction (ORR), whereas most of them favor only either...

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.

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