scholarly journals Electrocatalytic nitrogen reduction directed through the p-band center of boron on BSAC@Mo2C

2021 ◽  
Author(s):  
Ashakiran Maibam ◽  
Sailaja Krishnamurty ◽  
Manzoor Ahmad Dar
Keyword(s):  
Boron Atom ◽  
Ammonia Synthesis ◽  
Single Atom ◽  
Nitrogen Reduction ◽  
Band Center ◽  
Metal Free

Greener modes of ammonia synthesis via the electrocatalytic route have been investigated on pristine and defective Mo2C based monolayers anchored with metal-free boron atom catalysts. Boron single atom catalysts (SACs)...

A single boron atom doped boron nitride edge as a metal-free catalyst for N2 fixation

2019 ◽  
Vol 21 (3) ◽  
pp. 1110-1116 ◽  
Author(s):  
Xin Mao ◽  
Si Zhou ◽  
Cheng Yan ◽  
Zhonghua Zhu ◽  
Aijun Du
Keyword(s):  
Boron Nitride ◽  
Boron Atom ◽  
N2 Fixation ◽  
Single Atom ◽  
First Principle ◽  
Metal Free ◽  
Principle Theory

The first-principle theory has been used to predict a new metal-free single atom electrocatalyst for N2 reduction.

Metal–free C5N2 doped with boron atom as an efficient electrocatalyst for nitrogen reduction reaction

2022 ◽  
Author(s):  
Ting-Ting Zhao ◽  
Yu Tian ◽  
Li-Kai Yan ◽  
Zhong-Min Su
Keyword(s):  
Boron Atom ◽  
Low Cost ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Reduction Reactions ◽  
Metal Free

Electrochemical nitrogen reduction reactions (NRR) under ambient conditions is a promising and attractive way for ammonia (NH3) synthesis. It is significant to develop efficient and low–cost electrocatalysts for nitrogen reduction....

Recent advancement in the electrocatalytic synthesis of ammonia

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8065-8094 ◽  
Author(s):  
Xudong Wen ◽  
Jingqi Guan
Keyword(s):  
Metal Oxide ◽  
Oxide Catalysts ◽  
Single Atom ◽  
Metal Oxide Catalysts ◽  
Metal Free ◽  
Recent Advancement ◽  
Nanocomposite Catalysts

Different kinds of electrocatalysts used in NRR electrocatalysis (including single atom catalysts, metal oxide catalysts, nanocomposite catalysts, and metal free catalysts) are introduced.

scholarly journals Photocatalysis and Photoelectrocatalysis Methods of Nitrogen Reduction for Sustainable Ammonia Synthesis

Small Methods ◽  
2018 ◽  
Vol 3 (6) ◽  
pp. 1800352 ◽  
Author(s):  
Kemakorn Ithisuphalap ◽  
Hanguang Zhang ◽  
Lin Guo ◽  
Qingui Yang ◽  
Haipeng Yang ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Nitrogen Reduction

scholarly journals When More Is Less: Nonmonotonic Trends in Adsorption on Clusters in Alloy Surfaces

2020 ◽  
Author(s):  
Abigale Monasterial ◽  
Calla Hinderks ◽  
Songkun Viriyavaree ◽  
Matthew Montemore
Keyword(s):  
Hydrogen Adsorption ◽  
Electronic States ◽  
Single Atom ◽  
Surface Site ◽  
Ensemble Size ◽  
Free Standing ◽  
Reactive Metal ◽  
Band Center ◽  
Adsorption Energies ◽  
Single Atom Alloys

<div> <div> <div> <p>Single-atom alloys can be effective catalysts and have been compared to supported single-atom catalysts. To rationally design single-atom alloys and other surfaces with localized ensembles, it is crucial to understand variations in reactivity when varying the dopant and the ensemble size. Here, we examined hydrogen adsorption on surfaces embedded with localized clusters and discovered general trends. Counterintuitively, increasing the amount of a more reactive metal sometimes makes a surface site less reactive. This behavior is due to the localized electronic states in many of these surfaces, making them similar to free-standing nanoclusters. Further, single-atom alloys have qualitatively different behavior than larger ensembles. Specifically, the adsorption energy is U-shaped when plotted against the dopant’s group for single atom alloys. Additionally, adsorption energies on single atom alloys correlate more strongly with the dopant’s p-band center than the d-band center. </p> </div> </div> </div>

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.

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