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.

Molecule-level graphdiyne coordinated transition metals as a new class of bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions

2019 ◽  
Vol 21 (35) ◽  
pp. 19651-19659 ◽  
Author(s):  
Zhen Feng ◽  
Renyi Li ◽  
Yaqiang Ma ◽  
Yi Li ◽  
Dong Wei ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Single Atom ◽  
High Catalytic Activity ◽  
New Class ◽  
Bifunctional Electrocatalysts

Graphdiyne (GDY) could provide a unique platform for synthesizing uniform single-atom catalysts (SACs) with high catalytic activity toward oxygen reduction (ORR) and oxygen evolution (OER) reactions.

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-sized Ni–N4 sites anchored in three-dimensional hierarchical carbon nanostructures for the oxygen reduction reaction

2020 ◽  
Vol 8 (30) ◽  
pp. 15012-15022
Author(s):  
Zhewei Cai ◽  
Pan Du ◽  
Wenhui Liang ◽  
Hui Zhang ◽  
Ping Wu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Nanostructures ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Hierarchical Carbon

Single-atom-sized Ni–N4 sites embedded in three-dimensional and hierarchically structured carbon exhibit a high catalytic activity for 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...

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>

Catalytic activity of palladium-doped silver dilute nanoalloys for formate oxidation from a theoretical perspective

2019 ◽  
Vol 21 (40) ◽  
pp. 22598-22610 ◽  
Author(s):  
Nan Zhang ◽  
Fuyi Chen ◽  
Longfei Guo
Keyword(s):  
Catalytic Activity ◽  
Oxidation Reaction ◽  
Theoretical Perspective ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Formate Oxidation ◽  
First Time ◽  
Single Atom Alloys

We demonstrate for the first time that the Pd1Ag single-atom alloys exhibit a high catalytic activity for formate oxidation reaction.

Engineering Mn Atomic Sites in Multi-Dimensional Nitrogen-Doped Carbon for Highly Efficient Oxygen Reduction Reaction

2022 ◽  
Author(s):  
Huixin Ma ◽  
Daijie Deng ◽  
Honghui Zhang ◽  
Feng Chen ◽  
Junchao Qian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Single Atom ◽  
Two Dimensional ◽  
One Dimensional ◽  
Nitrogen Doped ◽  
Half Wave ◽  
Nitrogen Doped Carbon

Nitrogen-coordinated single-atom manganese in multi-dimensional nitrogen-doped carbon electrocatalysts (Mn-NC) was successful constructed by combing two-dimensional nanosheets and one-dimensional nanofibers. The Mn-NC exhibited excellent oxygen reduction reaction catalytic activity with half-wave...

scholarly journals Adsorption-regulated precise synthesis of atomically-dispersed bimetallic Fe-Co sites on carbon for electrocatalytic nitrogen reduction reaction

2021 ◽  
Author(s):  
Shengbo Zhang ◽  
Miaomiao Han ◽  
Tongfei Shi ◽  
Haimin Zhang ◽  
Yue Lin ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Reduction Reaction ◽  
Single Atom ◽  
Synthetic Approach ◽  
New Paradigm ◽  
Faradaic Efficiency ◽  
Nitrogen Reduction ◽  
Site Density

Abstract The intriguing features of single-atom catalysts (SACs) could bring catalysis into a new paradigm, however, controllably synthesising SACs with desired SA loadings and coordination forms are challenging. Here, we report an adsorption-regulated approach to precisely control the synthesis of bimetallic Fe-Co SAs on carbon. Bacterial cellulose (BC) is utilised as an adsorption regulator to controllably impregnate Fe3+/Co2+ on BC and through carbonisation to anchor Fe-Co SAs on BC-derived carbon via bimetallic [(O-C2)3Fe-Co(O-C2)3] coordination with desired Fe/Co contents and atomic ratios. Under electrocatalytic nitrogen reduction reaction (NRR) conditions, [(O-C2)3Fe-Co(O-C2)3] is operando transformed to [(O-C2)3Fe-Co(O-C)C2] that promotes and sustains NRR performance. A superb ammonia yield of 574.8 ± 35.3 μg h-1 mgcat.-1 with an exceptional faradaic efficiency of 73.2 ± 4.6% are obtained from an electrocatalyst with the highest bimetallic Fe-Co site density. The exemplified synthetic approach would be of generically applicable to controllably anchor SAs on carbon that enables meaningfully investigate and rationally design SACs.

Strategies of alloying effect for regulating Pt-based H2-SCR catalytic activity

2018 ◽  
Vol 54 (68) ◽  
pp. 9502-9505 ◽  
Author(s):  
Wei Sun ◽  
Zhiqiang Wang ◽  
Qian Wang ◽  
Waqas Qamar Zaman ◽  
Limei Cao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
No Reduction ◽  
Compressive Strain ◽  
Reduction Reaction ◽  
Alloying Effect

Compressive strain is induced in Pt crystals by alloying with smaller-sized 3d transition metals, which enhances the H2–NO reduction reaction activity by decreasing the energy required for breaking the N–O bond.

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