Elucidating the activity, mechanism and application of selective electrosynthesis of ammonia from nitrate on cobalt phosphide

2022 ◽  
Author(s):  
Shenghua Ye ◽  
Zhida Chen ◽  
Guikai Zhang ◽  
Wenda Chen ◽  
Chao Peng ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Nitrate Reduction ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Cobalt Phosphide ◽  
Activity Mechanism

Electrochemical reduction of nitrate to ammonia (nitrate reduction reaction, NO3-RR) under ambient conditions, which overcomes the drawbacks of energy-intensive Haber−Bosch reaction and low-efficient N2 electroreduction, is one of the alternatives...

scholarly journals Transition Metal Oxynitrides Catalysts for Electrochemical Reduction of Nitrogen to Ammonia

2021 ◽  
Author(s):  
Damilola Ologunagba ◽  
Shyam Kattel
Keyword(s):  
Density Functional Theory ◽  
Transition Metal ◽  
Dft Calculations ◽  
Electrochemical Reduction ◽  
Density Functional ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Functional Theory ◽  
Nitrogen Reduction ◽  
Bosch Process

Electrochemical nitrogen reduction reaction (ENRR) at ambient conditions is beneficial compared to energy intensive thermochemical Haber-Bosch process for NH3 production. Here, periodic density functional theory (DFT) calculations are carried out...

Cobalt phosphide nanorings towards efficient electrocatalytic nitrate reduction to ammonia

2021 ◽  
Author(s):  
Qing-Ling Hong ◽  
Jia Zhou ◽  
Quan-Guo Zhai ◽  
Yucheng Jiang ◽  
Mancheng Hu ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nitrate Reduction ◽  
Reduction Reaction ◽  
Electrocatalytic Reduction ◽  
High Quality ◽  
Cobalt Phosphide

High-quality CoP nanorings (CoP NRs) are easily achieved by phosphorating treatment of CoOOH nanorings, which reveal high activity towards hydrogen evolution reaction and nitrate electrocatalytic reduction reaction due to substantial...

Electrochemical reduction of nitrate to ammonia in a fluidized electrocatalysis system with oxygen vacancy-rich CuOX nanoparticles

2021 ◽  
Author(s):  
Jing Geng ◽  
Sihan Ji ◽  
Hui Xu ◽  
Cuijiao Zhao ◽  
Shengbo Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Laser Irradiation ◽  
Electrochemical Reduction ◽  
Nitrate Reduction ◽  
Reduction Reaction

In this work, oxygen vacancy-rich CuOX nanoparticles are fabricated by a laser-irradiation technique, and employed in a fluidized electrocatalysis system for the nitrate reduction reaction (NtrRR) to ammonia. As a...

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

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>

Enhanced nitrate reduction reaction via efficient intermediate nitrite conversion on tunable CuxNiy/NC electrocatalysts

2021 ◽  
pp. 126628
Author(s):  
Ling Fang ◽  
Sha Wang ◽  
Cheng Song ◽  
Xiaohui Yang ◽  
Yuke Li ◽  
...  
Keyword(s):  
Nitrate Reduction ◽  
Reduction Reaction

Tuning selectivity of electrochemical reduction reaction of CO2 by atomically dispersed Pt into SnO2 nanoparticles

2021 ◽  
pp. 133035
Author(s):  
Xiaoxia Zhou ◽  
Erhong Song ◽  
Zhaoyu Kuang ◽  
Zhe Gao ◽  
Han Zhao ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Sno2 Nanoparticles ◽  
Reduction Reaction

Importance of Au nanostructures in CO2 electrochemical reduction reaction

2020 ◽  
Vol 65 (10) ◽  
pp. 796-802 ◽  
Author(s):  
Dong-Rui Yang ◽  
Ling Liu ◽  
Qian Zhang ◽  
Yi Shi ◽  
Yue Zhou ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Reaction

scholarly journals Communication—Partial Oxidation of MnS for Synergistic Electrocatalysis of N2-to-NH3 Fixation at Ambient Conditions

2021 ◽  
Author(s):  
Peiei Li ◽  
Dan Cheng ◽  
Xiaohua Zhu ◽  
Meiling Liu ◽  
Youyu Zhang
Keyword(s):  
Partial Oxidation ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Faradaic Efficiency ◽  
Bosch Process ◽  
Ambient Nh3 ◽  
Reaction Performance ◽  
Excellent Selectivity

Abstract Compared with the traditional Haber-Bosch process, electrochemical N2-to-NH3 reduction affords an eco-friendly and sustainable alternative to ambient NH3 synthesis with the aid of efficient electrocatalysts. In this work, partial oxidation of MnS to obtain the MnS-Mn3O4 is proved as a promising noble-free electrocatalysts of N2to NH3 fixation at ambient conditions. When tested in 0.1 M Na2SO4, the electrochemical N2 reduction reaction performance of MnS-Mn3O4 is improved comparing with the MnS, which achieves large NH3 yield of 16.74 μg h–1 mgcat.–1 and a high Faradaic efficiency of 5.72%. It also exhibits excellent selectivity of N2-to-NH3 and strong long-term electrochemical stabil

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