Elastic Ag-anchored N-doped graphene/carbon foam for the selective electrochemical reduction of carbon dioxide to ethanol

2018 ◽  
Vol 6 (12) ◽  
pp. 5025-5031 ◽  
Author(s):  
Kuilin Lv ◽  
Yanchen Fan ◽  
Ying Zhu ◽  
Yi Yuan ◽  
Jinrong Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
High Selectivity ◽  
Carbon Foam ◽  
Faradaic Efficiency ◽  
Doped Graphene ◽  
Low Overpotential

3D macroporous hierarchical Ag-G-NCF can efficiently convert CO2 to ethanol with a low overpotential, high faradaic efficiency and high selectivity.

Clam-shaped cyclam-functionalized porphyrin for electrochemical reduction of carbon dioxide

2019 ◽  
Vol 23 (04n05) ◽  
pp. 453-461
Author(s):  
Sumana Tawil ◽  
Hathaichanok Seelajaroen ◽  
Amorn Petsom ◽  
Niyazi Serdar Sariciftci ◽  
Patchanita Thamyongkit
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Cyclic Voltammetry ◽  
Catalytic Activity ◽  
Electrochemical Reduction ◽  
Target Compound ◽  
Faradaic Efficiency ◽  
Controlled Potential Electrolysis ◽  
Improved Stability ◽  
Controlled Potential

A clam-shaped molecule comprising a Zn(II)-porphyrin and a Zn(II)-cyclam is synthesized and characterized. Its electrochemical behavior and catalytic activity for homogeneous electrochemical reduction of carbon dioxide (CO[Formula: see text] are investigated by cyclic voltammetry and compared with those of Zn(II)-meso-tetraphenylporphyrin and Zn(II)-cyclam. Under N2-saturated conditions, cyclic voltammetry of the featured complex has characteristics of its two constituents, but under CO2-saturated conditions, the target compound exhibits significant current enhancement. Iterative reduction under electrochemical conditions indicated the target compound has improved stability relative to Zn(II)-cyclam. Controlled potential electrolysis demonstrates that, without addition of water, methane (CH[Formula: see text] is the only detectable product with 1% Faradaic efficiency (FE). The formation of CH4 is not observed under the catalysis of the Zn(II)-porphyrin benchmark compound, indicating that the CO2-capturing function of the Zn(II)-cyclam unit contributes to the catalysis. Upon addition of 3% v/v water, the electrochemical reduction of CO2 in the presence of the target compound gives carbon monoxide (CO) with 28% FE. Dominance of CO formation under these conditions suggests enhancement of proton-coupled reduction. Integrated action of these Zn(II)-porphyrin and Zn(II)-cyclam units offers a notable example of a molecular catalytic system where the cyclam ring captures and brings CO2 into the proximity of the porphyrin catalysis center.

Electrochemical Reduction of Carbon Dioxide to Carbon Monoxide Using CVD N-Doped Graphene on Copper Foam As Carbo-/Electro-Catalyst

2020 ◽  
Vol MA2020-01 (5) ◽  
pp. 615-615
Author(s):  
Krisara Srimanon ◽  
Atiweena Krittayavathananon ◽  
Sangchai Sarawutanukul ◽  
Montree Sawangphruk
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Electrochemical Reduction ◽  
Copper Foam ◽  
Doped Graphene

scholarly journals Elucidation of the Roles of Ionic Liquid in CO2 Electrochemical Reduction to Value-Added Chemicals and Fuels

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6962
Author(s):  
Sulafa Abdalmageed Saadaldeen Mohammed ◽  
Wan Zaireen Nisa Yahya ◽  
Mohamad Azmi Bustam ◽  
Md Golam Kibria
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Reaction Mechanism ◽  
Electrochemical Reduction ◽  
Value Added ◽  
Faradaic Efficiency ◽  
Renewable Source ◽  
Carbon Dioxide Co2 ◽  
Physical And Chemical ◽  
Value Added Products

The electrochemical reduction of carbon dioxide (CO2ER) is amongst one the most promising technologies to reduce greenhouse gas emissions since carbon dioxide (CO2) can be converted to value-added products. Moreover, the possibility of using a renewable source of energy makes this process environmentally compelling. CO2ER in ionic liquids (ILs) has recently attracted attention due to its unique properties in reducing overpotential and raising faradaic efficiency. The current literature on CO2ER mainly reports on the effect of structures, physical and chemical interactions, acidity, and the electrode–electrolyte interface region on the reaction mechanism. However, in this work, new insights are presented for the CO2ER reaction mechanism that are based on the molecular interactions of the ILs and their physicochemical properties. This new insight will open possibilities for the utilization of new types of ionic liquids. Additionally, the roles of anions, cations, and the electrodes in the CO2ER reactions are also reviewed.

Electrochemical Reduction of Carbon Dioxide to Hydrocarbons with High Faradaic Efficiency in LiOH/Methanol

1999 ◽  
Vol 103 (35) ◽  
pp. 7456-7460 ◽  
Author(s):  
Satoshi Kaneco ◽  
Kenji Iiba ◽  
Syo-ko Suzuki ◽  
Kiyohisa Ohta ◽  
Takayuki Mizuno
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Faradaic Efficiency

scholarly journals Electrochemical Reduction of Carbon Dioxide over CNT-Supported Nanoscale Copper Electrocatalysts

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Sk. Safdar Hossain ◽  
Sleem ur Rahman ◽  
Shakeel Ahmed
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
High Current Density ◽  
Linear Sweep Voltammetry ◽  
Maximum Activity ◽  
Structure Characterization ◽  
Precipitation Method ◽  
Potential Range ◽  
Faradaic Efficiency ◽  
Methanol Formation

This paper presents the experimental investigation of copper loaded carbon nanotubes (CNTs) electrocatalysts for the electrochemical reduction of carbon dioxide. The electrocatalysts were synthesized by homogeneous deposition precipitation method (HDP) using urea as precipitating agent. The prepared catalysts were characterized by TEM, SEM, XRD, XPS, BET, and FTIR for their morphology and structure. Characterization results confirm the deposition of Cu nanoparticles (3–60 nm) on CNTs. Linear sweep voltammetry (LSV) and chronoamperometry (CA) were used to investigate the activity of the as-prepared catalysts for the electrochemical reduction of carbon dioxide. The electrocatalysts reduced CO2with high current density in the potential range 0~−3 V versus SCE (standard calomel electrode). Among all catalysts tested, 20 wt. % copper loaded CNTs showed maximum activity. Gas chromatograph with TCD was used to analyze liquid phase composition. The faradaic efficiency for methanol formation was estimated to be 38.5%.

Activation of CO2by ionic liquid EMIM–BF4in the electrochemical system: a theoretical study

2015 ◽  
Vol 17 (36) ◽  
pp. 23521-23531 ◽  
Author(s):  
Yuanqing Wang ◽  
Makoto Hatakeyama ◽  
Koji Ogata ◽  
Masamitsu Wakabayashi ◽  
Fangming Jin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Electrochemical Reduction ◽  
Theoretical Study ◽  
Electrochemical System ◽  
Faradaic Efficiency ◽  
Reduction Processes ◽  
System A ◽  
Low Overpotential

The electrochemical reduction of CO2to CO by an ionic liquid EMIM–BF4is one of the most promising CO2reduction processes proposed so far with its high Faradaic efficiency and low overpotential.

High Selectivity Towards Formate Production by Electrochemical Reduction of Carbon Dioxide at Copper–Bismuth Dendrites

ChemSusChem ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 231-239 ◽  
Author(s):  
Zachary B. Hoffman ◽  
Tristan S. Gray ◽  
Yin Xu ◽  
Qiyuan Lin ◽  
T. Brent Gunnoe ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
High Selectivity ◽  
Formate Production

Theoretical search for novel Au or Ag bimetallic alloys capable of transforming CO2 into hydrocarbons

2019 ◽  
Vol 7 (36) ◽  
pp. 20567-20573
Author(s):  
Nian Wu ◽  
Li Xiao ◽  
Lin Zhuang
Keyword(s):  
Electrochemical Reduction ◽  
High Selectivity ◽  
Reduction Reaction ◽  
Bimetallic Alloys ◽  
Low Overpotential

Designing efficient catalysts with a high selectivity toward hydrocarbons at a relatively low overpotential is of great significance for the application of the CO2 electrochemical reduction reaction (CO2RR).

Electrochemical reduction of carbon dioxide at low overpotential on a polyaniline/Cu2O nanocomposite based electrode

2014 ◽  
Vol 120 ◽  
pp. 85-94 ◽  
Author(s):  
Andrews Nirmala Grace ◽  
Song Yi Choi ◽  
Mari Vinoba ◽  
Margandan Bhagiyalakshmi ◽  
Dae Hyun Chu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Low Overpotential
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