scholarly journals A Water-Soluble Sodium Pectate Complex with Copper as an Electrochemical Catalyst for Carbon Dioxide Reduction

Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5524
Author(s):  
Kirill V. Kholin ◽  
Mikhail N. Khrizanforov ◽  
Vasily M. Babaev ◽  
Guliya R. Nizameeva ◽  
Salima T. Minzanova ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Reduction Reaction ◽  
Water Soluble ◽  
Molecular Catalyst ◽  
Electrochemical Catalyst ◽  
Highly Active ◽  
Electrochemical Co2 Reduction ◽  
The Stability ◽  
Molecular Catalysts ◽  
Co2 Reduction Reaction

A selective noble-metal-free molecular catalyst has emerged as a fruitful approach in the quest for designing efficient and stable catalytic materials for CO2 reduction. In this work, we report that a sodium pectate complex of copper (PG-NaCu) proved to be highly active in the electrocatalytic conversion of CO2 to CH4 in water. Stability and selectivity of conversion of CO2 to CH4 as a product at a glassy carbon electrode were discovered. The copper complex PG-NaCu was synthesized and characterized by physicochemical methods. The electrochemical CO2 reduction reaction (CO2RR) proceeds at −1.5 V vs. Ag/AgCl at ~10 mA/cm2 current densities in the presence of the catalyst. The current density decreases by less than 20% within 12 h of electrolysis (the main decrease occurs in the first 3 h of electrolysis in the presence of CO2). This copper pectate complex (PG-NaCu) combines the advantages of heterogeneous and homogeneous catalysts, the stability of heterogeneous solid materials and the performance (high activity and selectivity) of molecular catalysts.

Tandem catalysis in electrochemical CO2 reduction reaction

Nano Research ◽  
2021 ◽  
Author(s):  
Yating Zhu ◽  
Xiaoya Cui ◽  
Huiling Liu ◽  
Zhenguo Guo ◽  
Yanfeng Dang ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Reduction Reaction ◽  
Tandem Catalysis ◽  
Electrochemical Co2 Reduction ◽  
Co2 Reduction Reaction

Atomic regulation of metal-organic framework derived carbon-based single-atom catalysts for electrochemical CO2 reduction reaction

2021 ◽  
Author(s):  
Danni Zhou ◽  
Xinyuan Li ◽  
Huishan Shang ◽  
Fengjuan Qin ◽  
Wenxing Chen
Keyword(s):  
Active Sites ◽  
Metal Organic Framework ◽  
Co2 Reduction ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Single Atom ◽  
Electrochemical Co2 Reduction ◽  
Metal Organic ◽  
Co2 Reduction Reaction ◽  
Organic Framework

Metal-organic framework (MOF) derived single-atom catalysts (SACs), featured unique active sites and adjustable topological structures, exhibit high electrocatalytic performance on carbon dioxide reduction reactions (CO2RR). By modulating elements and atomic...

Understanding the role of axial O in CO2 electroreduction on NiN4 single-atom catalysts via simulations in realistic electrochemical environment

2021 ◽  
Author(s):  
Xu Hu ◽  
Sai Yao ◽  
Letian Chen ◽  
Xu Zhang ◽  
Menggai Jiao ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Heterogeneous Catalysis ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Single Atom ◽  
Electrochemical Co2 Reduction ◽  
Co2 Electroreduction ◽  
Important Approach ◽  
Co2 Reduction Reaction

Electrochemical CO2 reduction reaction (CO2RR) is a very important approach to realize sustainable development. Single-atom catalysts show advantages in both homogeneous and heterogeneous catalysis, and considerable progress has been made...

A Wide Range of CO : H2 Syngas Proportions Enabled by Tellurization-Induced Amorphous Telluride-Palladium Surface

2021 ◽  
Author(s):  
Kailei Cao ◽  
Yujin Ji ◽  
Shuxing Bai ◽  
Xiaoqing Huang ◽  
Youyong Li ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Reduction Reaction ◽  
Direct Production ◽  
Environmental Friendly ◽  
Electrochemical Co2 Reduction ◽  
Wide Range ◽  
Palladium Surface ◽  
Co2 Reduction Reaction

The direct production of syngas via electrochemical CO2 reduction reaction (CO2RR) is a highly potential process for its environmental-friendly and product adjustability advantages. However, it is challenging to synthesize syngas...

Molecular electrocatalysts can mediate fast, selective CO2 reduction in a flow cell

Science ◽  
2019 ◽  
Vol 365 (6451) ◽  
pp. 367-369 ◽  
Author(s):  
Shaoxuan Ren ◽  
Dorian Joulié ◽  
Danielle Salvatore ◽  
Kristian Torbensen ◽  
Min Wang ◽  
...  
Keyword(s):  
Flow Reactor ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Operating Conditions ◽  
High Current ◽  
Membrane Flow ◽  
Molecular Catalyst ◽  
Current Densities ◽  
Molecular Catalysts ◽  
Distinct Approach

Practical electrochemical carbon dioxide (CO2) conversion requires a catalyst capable of mediating the efficient formation of a single product with high selectivity at high current densities. Solid-state electrocatalysts achieve the CO2 reduction reaction (CO2RR) at current densities ≥ 150 milliamperes per square centimeter (mA/cm2), but maintaining high selectivities at high current densities and efficiencies remains a challenge. Molecular CO2RR catalysts can be designed to achieve high selectivities and low overpotentials but only at current densities irrelevant to commercial operation. We show here that cobalt phthalocyanine, a widely available molecular catalyst, can mediate CO2 to CO formation in a zero-gap membrane flow reactor with selectivities > 95% at 150 mA/cm2. The revelation that molecular catalysts can work efficiently under these operating conditions illuminates a distinct approach for optimizing CO2RR catalysts and electrolyzers.

scholarly journals Optimizing the use of a “Zero-Gap” Gas Diffusion Electrode Setup for Electrochemical Reduction of CO2

2021 ◽  
Author(s):  
Shima Alinejad ◽  
Jonathan Quinson ◽  
Yao Li ◽  
Ying Kong ◽  
Sven Reichenberger ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Reduction Reaction ◽  
Gas Diffusion Electrode ◽  
Test Bed ◽  
Catalyst Screening ◽  
Electrochemical Co2 Reduction ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

The lack of a robust and standardized experimental test bed to investigate the performance of catalyst materials for the electrochemical CO2 reduction reaction (ECO2RR) is one of the major challenges in this field of research. To best reproduce and mimic commercially relevant conditions for catalyst screening and testing, gas diffusion electrode (GDE) setups attract a rising attention as an alternative to conventional aqueous-based setups such as the H-cell configuration. In particular a zero-gap design shows promising features for upscaling to the commercial scale. In this study, we develop further our recently introduced zero-gap GDE setup for the CO2RR using an Au electrocatalyst as model system and identify/report the key experimental parameters to control in the catalyst layer preparation in order to optimize the activity and selectivity of the catalyst.

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