Investigation of CO2 electrochemical reduction to syngas on Zn/Ni-based electrocatalysts using the cyclic voltammetry method

Beheshti, Mohammadali; Kakooei, Saeid; Ismail, Mokhtar Che; Shahrestani, Shohreh

doi:10.1016/j.electacta.2020.135976

Cited by 24 publications

(26 citation statements)

References 30 publications

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“…To achieve this attractive blueprint, the key issue is to develop electrocatalysts with high activity, superior selectivity, highly durable, environmentally friendly as well as low cost [250][251][252]. In 2014, the first pioneering work of elucidating the TMDCs materials as advanced electrocatalysts for CO 2 reduction was by Asadi and coauthors [253].…”

Section: Conversion Of Co 2 To Syngas and Other Gasesmentioning

confidence: 99%

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

et al. 2020

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The material characteristics and properties of transition metal dichalcogenide (TMDCs) have gained research interest in various fields, such as electronics, catalytic, and energy storage. In particular, many researchers have been focusing on the applications of TMDCs in dealing with environmental pollution. TMDCs provide a unique opportunity to develop higher-value applications related to environmental matters. This work highlights the applications of TMDCs contributing to pollution reduction in (i) gas sensing technology, (ii) gas adsorption and removal, (iii) wastewater treatment, (iv) fuel cleaning, and (v) carbon dioxide valorization and conversion. Overall, the applications of TMDCs have successfully demonstrated the advantages of contributing to environmental conversation due to their special properties. The challenges and bottlenecks of implementing TMDCs in the actual industry are also highlighted. More efforts need to be devoted to overcoming the hurdles to maximize the potential of TMDCs implementation in the industry.

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Section: Conversion Of Co 2 To Syngas and Other Gasesmentioning

confidence: 99%

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

et al. 2020

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“…Compared with Fe, Ni is an excellent catalyst for H 2 production; some previous works have reported that doping Ni in metallic oxide could enhance the properties of HER. Thus, doping Ni in ZnO may show a powerful ability to tune the ratio of CO and H 2 . , …”

Section: Introductionmentioning

confidence: 99%

Effectively Tuning the Ratio of CO and H₂ into Syngas through CO₂ Electrochemical Reduction over a Wide Potential Range on a ZnO Nanosheet via Ni Doping

Wang

Xiang

Zhang

et al. 2022

ACS Appl. Energy Mater.

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Electrochemical CO2 reduction (ECR) into syngas is a promising method to reduce CO2 in the atmosphere. However, balancing the activity of ECR and hydrogen evolution reaction (HER) and controlling the stable CO/H2 ratios in a large potential range for the industrial desired syngas are still challenging. Herein, a low-cost Ni-doped ZnO nanosheet array on a zinc foil is synthesized via a convenient hydrothermal method to produce a controllable ratio of CO/H2 into syngas. Because of the lower impedance and larger electrochemical area, Ni-doped ZnO has a more significant current density. Furthermore, by adjusting the Ni doping content in the ZnO nanosheet, the activity of ECR and HER could be controlled, and the ratio of CO/H2 can be tuned from 0.1 to 4.5 over a wide potential range (−1.2 to −1.8 V vs reversible hydrogen electrode, RHE), surpassing most of the reported work. Such a wide range and stable ratio of CO/H2 in a broad potential range makes it possible to convert CO2 into feedstock for many essential chemical products.

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“…In recent years, several studies were done on various electrocatalysts, but yet, there are problems in Faradaic Efficiency (FE), Current Density (CD), Energy Efficiency, electrocatalyst deactivate, the internal resistance of electrocatalysts, and the potential for scalability to the large sizes without the loss of efficiency, because CO 2 is a thermodynamically stable molecule, it is fully oxidized [3][4][5][6][7][8][9][10][11][12]. A suitable electrocatalyst to reduce CO 2 is necessary to reach a low-cost process with acceptable selectivity and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS

Beheshti¹,

Kakooei²,

Ismail³

et al. 2022

Electrocatalysis and Electrocatalysts for a Cleaner Environment - Fundamentals and Applications

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In the last decade, there is some research on the conversion of CO2 to energy form. CO2 can be converted to value-added chemicals including HCOOH, CO, CH4, C2H4, and liquid hydrocarbons that can be used in various industries. Among the methods, electrochemical methods are of concern regarding their capability to operate with an acceptable reaction rate and great efficiency at room temperature and can be easily coupled with renewable energy sources. Besides, electrochemical cell devices have been manufactured in a variety of sizes, from portable to large-scale applications. Catalysts that optionally reduce CO2 at low potential are required. Therefore, choosing a suitable electrocatalyst is very important. This chapter focused on the electrochemical reduction of CO2 by Zn-Ni bimetallic electrocatalyst. The Zn-Ni coatings were deposited on the low-carbon steel substrate. Electrochemical deposition parameters such as temperature in terms of LPR corrosion rate, microstructure, microcracks, and its composition have been investigated. Then, the electrocatalyst stability and activity, as well as gas intensity and selectivity, were inspected by SEM/EDX analysis, GC, and electrochemical tests. Among the electrocatalysts for CO2 reduction reaction, the Zn65%-Ni35% electrode with cluster-like microstructure had the best performance for CO2 reduction reaction according to minimum coke formation (<10%) and optimum CO and H2 faradaic efficiencies (CO FE% = 55% and H2 FE% = 45%).

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Investigation of CO2 electrochemical reduction to syngas on Zn/Ni-based electrocatalysts using the cyclic voltammetry method

Cited by 24 publications

References 30 publications

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

Effectively Tuning the Ratio of CO and H₂ into Syngas through CO₂ Electrochemical Reduction over a Wide Potential Range on a ZnO Nanosheet via Ni Doping

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS

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Investigation of CO2 electrochemical reduction to syngas on Zn/Ni-based electrocatalysts using the cyclic voltammetry method

Cited by 24 publications

References 30 publications

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

Effectively Tuning the Ratio of CO and H2 into Syngas through CO2 Electrochemical Reduction over a Wide Potential Range on a ZnO Nanosheet via Ni Doping

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO2to SYNGAS

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Product

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Effectively Tuning the Ratio of CO and H₂ into Syngas through CO₂ Electrochemical Reduction over a Wide Potential Range on a ZnO Nanosheet via Ni Doping

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS