Biomass Juncus derived carbon decorated with cobalt nanoparticles for high-efficiency ammonia electrosynthesis by nitrite reduction

2022 ◽  
Author(s):  
Jiaqian Wang ◽  
Jie Liang ◽  
Peng-Yu Liu ◽  
Zhe Yan ◽  
Linxia Cui ◽  
...  
Keyword(s):  
High Efficiency ◽  
Reduction Reaction ◽  
Cobalt Nanoparticles ◽  
Nitrite Reduction ◽  
Attractive Alternative ◽  
Bosch Process ◽  
Promising Strategy ◽  
No2 Reduction

Electrochemical nitrite (NO2–) reduction reaction (NO2RR) is not only a promising strategy to degrade harmful NO2– contaminant in the environment but an attractive alternative to the Haber-Bosch process for sustainable...

Heteroatom-doped C3N as a promising metal-free catalyst for a high-efficiency carbon dioxide reduction reaction

2020 ◽  
Vol 44 (27) ◽  
pp. 11824-11828 ◽  
Author(s):  
Tingting Zhao ◽  
Yu Tian ◽  
Likai Yan ◽  
Zhongmin Su
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
High Efficiency ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Energy Crisis ◽  
Metal Free ◽  
Promising Strategy ◽  
Fuels And Chemicals

Converting CO2 into useful fuels and chemicals offers a promising strategy for mitigating the issues of energy crisis and global warming.

Boosting Electrochemical Nitrogen Reduction to Ammonia with High Efficiency using LiNb3O8 Electrocatalyst in Neutral Media

2022 ◽  
Author(s):  
Qi Wang ◽  
Shuhui Fan ◽  
Leran Liu ◽  
Xiaojiang Wen ◽  
Yun Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Ammonia Synthesis ◽  
Reduction Reaction ◽  
Nitrogen Reduction ◽  
Bosch Process ◽  
Neutral Media

Nitrogen reduction reaction (NRR) has great research prospects as a method to replace the industrial Haber-Bosch process for ammonia synthesis. Nevertheless, the efficiency of NRR is mainly depended on the...

An amorphous WC thin film enabled high-efficiency N2 reduction electrocatalysis at ambient conditions

2021 ◽  
Author(s):  
Shaoxiong Li ◽  
Yonglan Luo ◽  
Luchao Yue ◽  
Ting Shuai Li ◽  
Yan Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Efficiency ◽  
Aqueous Media ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Promising Alternative ◽  
Bosch Process

Ambient electrochemical N2 reduction offers a promising alternative for the energy-intensive Haber-Bosch process toward renewable NH3 synthesis in aqueous media but needs efficient electrocatalysts to enable the N2 reduction reaction...

Spatiotemporal Coupling Dual-photocatalytic Integration in Atomic- hybridized Co0.5Fe0.5In2S4 Nanoflowers for High Efficiency Nitrogen Reduction

2020 ◽  
Author(s):  
Qifan Wu ◽  
Gang Zhou ◽  
Tao Li ◽  
Jun Guo ◽  
Lizhe Liu
Keyword(s):  
Hydrogen Evolution ◽  
High Efficiency ◽  
Time Window ◽  
Low Cost ◽  
Life Time ◽  
Reduction Reaction ◽  
Photocatalytic Reduction ◽  
Attractive Alternative ◽  
New Paradigm ◽  
Coupling Strategy

Abstract The photocatalytic reduction of N2 to NH3 under mild conditions using low-cost solar is an attractive alternative to replace the energy-intensive Haber-Bosch process, but which is typically hampered by poor binding of N2 to catalysts and high activation energy of intermediates. In particular time window, catalyst hydrogenation directly induced by photocatalytic water splitting can provide an alternation pathway to overcome limitations in conventional N2 reduction reaction (NRR). Herein, we propose a spatiotemporal coupling strategy in Co0.5Fe0.5In2S4 ultrathin nanoflowers to integrate hydrogen evolution reaction (HER) and NRR together, in which the photo-excited carrier life time is intentionally extended to match six-electron NRR process; meanwhile hydrogen evolution rate is limited to generate a transient hydrogenation on catalytic surface for accelerating N2 adsorption and activation. This spatiotemporal coupling design can easily drive N2 to *N2H2 and far away from conventional stagewise activation of N≡N triplet bonds. As a result, the photocatalytic performance of N2 reduction is about 85.8 μmol g-1 h-1 without sacrificial agent. Our findings provide a new paradigm for integrating dual photocatalytic reduction, bringing a transient hydrogenation and free nitrogen directly to reactants without requiring N2 molecular adsorption to the catalyst.

High-efficiency electrochemical nitrite reduction to NH3 by Cu3P nanowire array under ambient conditions

2021 ◽  
Author(s):  
Jie Liang ◽  
Biao Deng ◽  
Qin Liu ◽  
Guilai Wen ◽  
Qian Liu ◽  
...  
Keyword(s):  
Significant Role ◽  
Large Scale ◽  
High Efficiency ◽  
Nanowire Array ◽  
Nitrite Reduction ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Bosch Process

Ammonia (NH3) plays a significant role in agriculture and industry. Industrially, large-scale NH3 production mainly depends on the energy-intensive and environmentally unfriendly Haber-Bosch process. Electrochemical nitrogen reduction is regarded as...

scholarly journals Quasi-graphitic carbon shell-induced Cu confinement promotes electrocatalytic CO2 reduction toward C2+ products

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ji-Yong Kim ◽  
Deokgi Hong ◽  
Jae-Chan Lee ◽  
Hyoung Gyun Kim ◽  
Sungwoo Lee ◽  
...  
Keyword(s):  
High Efficiency ◽  
Co2 Reduction ◽  
Value Added ◽  
Material Design ◽  
Catalyst System ◽  
Critical Issue ◽  
Reduction Reaction ◽  
Catalyst Design ◽  
Design Strategies ◽  
Faradaic Efficiency

AbstractFor steady electroconversion to value-added chemical products with high efficiency, electrocatalyst reconstruction during electrochemical reactions is a critical issue in catalyst design strategies. Here, we report a reconstruction-immunized catalyst system in which Cu nanoparticles are protected by a quasi-graphitic C shell. This C shell epitaxially grew on Cu with quasi-graphitic bonding via a gas–solid reaction governed by the CO (g) - CO2 (g) - C (s) equilibrium. The quasi-graphitic C shell-coated Cu was stable during the CO2 reduction reaction and provided a platform for rational material design. C2+ product selectivity could be additionally improved by doping p-block elements. These elements modulated the electronic structure of the Cu surface and its binding properties, which can affect the intermediate binding and CO dimerization barrier. B-modified Cu attained a 68.1% Faradaic efficiency for C2H4 at −0.55 V (vs RHE) and a C2H4 cathodic power conversion efficiency of 44.0%. In the case of N-modified Cu, an improved C2+ selectivity of 82.3% at a partial current density of 329.2 mA/cm2 was acquired. Quasi-graphitic C shells, which enable surface stabilization and inner element doping, can realize stable CO2-to-C2H4 conversion over 180 h and allow practical application of electrocatalysts for renewable energy conversion.

Carbon nitride derivatives as photocatalysts for the CO2 reduction reaction: computational study

2021 ◽  
Vol 23 (5) ◽  
pp. 3401-3406
Author(s):  
Siru Li ◽  
Yu Tian ◽  
Likai Yan ◽  
Zhongmin Su
Keyword(s):  
Carbon Nitride ◽  
Computational Study ◽  
Co2 Reduction ◽  
Environmental Problems ◽  
Reduction Reaction ◽  
Photocatalytic Reduction ◽  
Energy Crisis ◽  
Promising Strategy ◽  
Co2 Reduction Reaction

Photocatalytic reduction of CO2 to hydrocarbons is considered to be a promising strategy to solve the energy crisis and environmental problems.

Boron modulating electronic structure of FeN4C to initiate high-efficiency oxygen reduction reaction and high-performance zinc-air battery

2022 ◽  
Vol 66 ◽  
pp. 514-524
Author(s):  
Xue Zhao ◽  
Xue Li ◽  
Zenghui Bi ◽  
Yuwen Wang ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
High Efficiency ◽  
Reduction Reaction ◽  
Air Battery

A Characteristic-Featured Shock Wave Indicator for Simulating High-Speed Inviscid Flows on 3D Unstructured Mesh

2021 ◽  
Author(s):  
Yiwei Feng ◽  
Tiegang Liu ◽  
Xiaofeng He ◽  
Bin Zhang ◽  
Kun Wang
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Unstructured Mesh ◽  
High Efficiency ◽  
Flow Simulation ◽  
Attractive Alternative ◽  
Inviscid Flows ◽  
Speed Flow ◽  
Flow Compression ◽  
Shock Processing

Abstract In this work, we extend the characteristic-featured shock wave indicator based on artificial neuron training to 3D high-speed flow simulation on unstructured mesh. The extension is achieved through dimension splitting. This leads to that the proposed indicator is capable of identifying regions of flow compression in any direction. With this capability, the indicator is further developed to combine with h-adaptivity of mesh refinement to improve resolution with less computational costs. The present indicator provided an attractive alternative for constructing high-resolution, high-efficiency shock-processing method to simulate high-speed inviscid flows.

Towards broad-operation window for stable CO2 electroreduction to HCOOH by upcycling design of electroplating sludge derived Sn@N/P-doped carbon

2022 ◽  
Author(s):  
Xiaohui Zhong ◽  
Zuqi Zhong ◽  
Shujie Liang ◽  
Gongchang Zeng ◽  
Shuang Cheng ◽  
...  
Keyword(s):  
Reduction Reaction ◽  
Promising Strategy ◽  
Co2 Electroreduction ◽  
Electroplating Sludge ◽  
Carbon Neutral

Electrochemical CO2 reduction reaction (CO2RR) to HCOOH offers a promising strategy for the carbon-neutral cycle. Sn-based materials have been demonstrated for extensive studies of CO2RR to HCOOH, but great challenges...

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