4.8 Article

Tuning C1/C2 Selectivity of CO2 Electrochemical Reduction over in-Situ Evolved CuO/SnO2 Heterostructure

Related references

Note: Only part of the references are listed.
Review Energy & Fuels

Challenges and strategies towards copper-based catalysts for enhanced electrochemical CO2 reduction to multi-carbon products

Bo Sun et al.

Summary: In this article, the favored mechanisms for CO2RR and possible pathways for producing C2+ products on Cu-based materials surfaces are summarized. The recent approaches to catalyst design and the challenges and perspectives in this field are also discussed.
Article Chemistry, Multidisciplinary

Surface Adsorbed Hydroxyl: A Double-Edged Sword in Electrochemical CO2 Reduction over Oxide-Derived Copper

Daixing Wei et al.

Summary: Oxide-derived Cu (OD-Cu) with surface located sub-20 nm nanoparticles (NPs) created via surface structure reconstruction was developed for electrochemical CO2 reduction (ECO2RR). The adsorption of hydroxyls (OHad) on the surface of OD-Cu, sterically confined and adsorbed by sub-20 nm NPs, was found to be determinative to the selective production of multi-carbon (C-2) products during ECO2RR. In situ spectral investigations and theoretical calculations revealed that OHad favored the adsorption of low-frequency *CO with weak C & EQUIV;O bonds, promoting *CO dimerization and selective C-2 production.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

Article Chemistry, Physical

Bifunctional porous SnO2/Ag nanofibers for efficient electroreduction of carbon dioxide to formate and its mechanism elucidation by in-situ surface-enhanced Raman scattering

Junjie Chen et al.

Summary: Monitoring reaction intermediates and identifying active sites is crucial for understanding mechanisms and designing catalysts. In this study, bifunctional porous SnO2/Ag nanofibers were prepared, showing high Faradaic efficiency for formate production. In-situ SERS spectra revealed that reduced tin-oxide served as the active site, and a key intermediate for formate production was detected. The correlation between material composition, chemical structure, and catalytic performance was established.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

Article Chemistry, Physical

Stabilizing Oxidation State of SnO2 for Highly Selective CO2 Electroreduction to Formate at Large Current Densities

Yunling Jiang et al.

Summary: By introducing atomic doping of Cu, Bi, or Pt, oxygen vacancies are generated in the SnO2 lattice, which stabilizes the oxidation state of SnO2 during CO2RR. This strategy enables a high formate Faradic efficiency (>80%) and a cell energy efficiency of 50-60% at industrial-level current densities, outperforming previous studies.

ACS CATALYSIS (2023)

Article Chemistry, Multidisciplinary

Accelerated Transfer and Spillover of Carbon Monoxide through Tandem Catalysis for Kinetics-boosted Ethylene Electrosynthesis

Jiayi Chen et al.

Summary: Researchers developed a method to engineer single nickel atoms on a pyridinic nitrogen-enriched carbon support, which served as a donor for adjacent copper nanoparticles to improve the selectivity of electroreduction of CO2 to C2H4. The presence of isolated nickel atoms and adjacent pyridinic nitrogen species facilitated the desorption of *CO, leading to an enhanced *CO coverage on the copper nanoparticles and improved selectivity.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

Article Chemistry, Multidisciplinary

Surface Modification of Nano-Cu2O for Controlling CO2 Electrochemical Reduction to Ethylene and Syngas

Haiqiang Luo et al.

Summary: In this study, a systematic strategy is proposed to control the product selectivity of the electrochemical CO2 reduction reaction (ECO2RR) by modifying the surface of nano-Cu2O. By controlling the exposed facets of the nano-Cu2O catalysts and introducing a metal-organic framework (MOF) coating, the highest C2H4 selectivity and a suitable H-2:CO ratio of syngas can be achieved. This strategy provides a reliable method for CO2 management and the green production of important carbon resources.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

Nanoconfinement Engineering over Hollow Multi-Shell Structured Copper towards Efficient Electrocatalytical C-C coupling

Chunxiao Liu et al.

Summary: The research found that Cu HoMSs structure has a high selectivity for C2+ products in CO2 electroreduction, and the C2+ Faradaic efficiency increases with the increase in shell numbers. Mechanistic studies show that superposition of Cu shells in HoMSs structure can increase the coverage of CO adsorbate, promoting carbon dimerization.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

Atomic Bridging Structure of Nickel-Nitrogen-Carbon for Highly Efficient Electrocatalytic Reduction of CO2

Xueying Cao et al.

Summary: By utilizing the electrospun-pyrolysis cooperative strategy to modulate the porous structure of the carbon support and adjust the bridging structure of atomically dispersed metal species, the unique chemical structure of binuclear nickel bridging with nitrogen and carbon atoms has been identified to enhance CO2 reduction substantially.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Physical

Determining Structure-Activity Relationships in Oxide Derived Cu-Sn Catalysts During CO2 Electroreduction Using X-Ray Spectroscopy

Laura C. Pardo Perez et al.

Summary: The study focuses on the application of Cu-Sn bimetallic catalysts in selective CO2 conversion, exploring the synergistic mechanism between Cu and Sn and discovering significant differences in Sn content and speciation between different catalyst types, further elucidating the role of Sn in CO and formate selectivity.

ADVANCED ENERGY MATERIALS (2022)

Article Chemistry, Multidisciplinary

In situ Raman spectroscopy studies for electrochemical CO2 reduction over Cu catalysts

Hefei Li et al.

Summary: Electrochemical in situ Raman spectroscopy is a powerful method to investigate catalyst structures and reaction intermediates in an electrochemical environment. This short review highlights recent advances in tracking structure evolution of catalyst surfaces and identifying reaction intermediates during CO2 reduction reaction using selected Cu catalysts.

CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY (2022)

Article Chemistry, Physical

Stabilizing intermediates and optimizing reaction processes with N doping in Cu2O for enhanced CO2 electroreduction

Chunliu Yan et al.

Summary: This study systematically reveals the mechanisms for enhanced CO2 electroreduction on nitrogen-doped Cu2O catalyst and demonstrates the importance of appropriate adsorption strength and modes of intermediates. The introduction of N into Cu2O significantly enhances CO2 adsorption capacity and binding strength of key intermediates, leading to increased production of CO and C2H4. The study also reveals that promoting the protonation step accelerates the formation of COOH center dot , facilitating the electroreduction of CO2.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Physical

Near-Unity Electrochemical CO2 to CO Conversion over Sn-Doped Copper Oxide Nanoparticles

Shuang Yang et al.

Summary: Bimetallic electrocatalysts with tin (Sn) doping in copper oxide (CuO) have demonstrated improved catalytic performance for CO2 reduction reaction. Sn doping enhances the Faradaic efficiency for CO formation and prolongs the catalyst stability. The in situ characterization techniques reveal that Sn doping lowers the binding energy of the adsorbed *CO intermediate, favoring CO desorption.

ACS CATALYSIS (2022)

Review Chemistry, Multidisciplinary

Challenges and Opportunities in Electrocatalytic CO2 Reduction to Chemicals and Fuels

Xiaojie She et al.

Summary: This review discusses the practical challenges in the industrial chain that hinder the scaling-up deployment of the ECO2R technology. High Faradaic efficiencies and current densities have been achieved for the ECO2R to CO/HCOOH and ECO2R to C2H4 reactions, indicating that ECO2R may have reached the stage for scale-up. The aim is to provide insights that can accelerate the development of the ECO2R technology.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

BiPO4-Derived 2D Nanosheets for Efficient Electrocatalytic Reduction of CO2 to Liquid Fuel

Yating Wang et al.

Summary: A 2D nanosheet-like electrocatalyst derived from bismuth phosphate (BiPO4) efficiently converts CO2 into liquid-phase formate with high Faradaic efficiency. The in situ generation of Bi-O active species on the catalyst surface and abundant insertion of oxygen atoms in the nanosheets contribute to the high activity for electrosynthesis of formate from CO2 and water.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Multidisciplinary Sciences

The nature of active sites for carbon dioxide electroreduction over oxide-derived copper catalysts

Dongfang Cheng et al.

Summary: This study reveals the active sites for CO2 electroreduction over oxide-derived copper (OD-Cu) catalysts, identifying square-like sites responsible for specific products. Planar and convex square sites are found to be responsible for ethylene production, while the step square site favors alcohols generation, providing fundamental insights into the origin of activity and selectivity over Cu-based catalysts.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Multidisciplinary

Residual Chlorine Induced Cationic Active Species on a Porous Copper Electrocatalyst for Highly Stable Electrochemical CO2 Reduction to C2+

Minhan Li et al.

Summary: In this study, a chlorine-doped porous copper electrocatalyst with high C2+ Faradaic efficiency was developed, showing outstanding catalytic stability over a long-term period. The stable cationic Cu-0/Cu+ species induced by chlorine and the well-preserved structure with abundant active sites were found critical to achieving high FE of C2+ in electrochemical CO2 reduction over time.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Product-Specific Active Site Motifs of Cu for Electrochemical CO2 Reduction

Chenyuan Zhu et al.

Summary: Researchers designed and fabricated nine large-area single-crystal copper foils to study the electrocatalytic CO2 reduction. By using GIXRD and EBSD, they tracked the top-surface reconstructions of copper and extracted three distinct structural descriptors to reveal the structure-function relationships in CO2R.
Article Chemistry, Multidisciplinary

Controllable Cu0-Cu+ Sites for Electrocatalytic Reduction of Carbon Dioxide

Xintong Yuan et al.

Summary: This study aims to enhance the CO2ER performance by increasing the synergism of Cu-0-Cu+ pairs, where Cu-0 activates CO2 molecules and facilitates electron transfer, while Cu+ strengthens *CO adsorption to further promote C-C coupling.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Review Chemistry, Applied

Copper-comprising nanocrystals as well-defined electrocatalysts to advance electrochemical CO2 reduction

Jianfeng Huang et al.

Summary: Copper-based electrocatalysts have garnered significant attention in the field of electrochemical CO2 reduction due to their ability to produce high value-added multicarbon products. Various Cu-comprising nanocrystals show better catalytic properties and enable in-depth mechanistic studies. Future research should focus on expanding catalyst varieties, managing active sites effectively, and addressing challenges in industrial applications.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Multidisciplinary

Hierarchical Copper with Inherent Hydrophobicity Mitigates Electrode Flooding for High-Rate CO2 Electroreduction to Multicarbon Products

Zhuang-Zhuang Niu et al.

Summary: The study focuses on designing a copper catalyst inspired by nature, with sufficient hydrophobicity and a unique hierarchical structure, to enhance the efficiency and stability of the CO2 reduction electrode.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Physical

High Facets on Nanowrinkled Cu via Chemical Vapor Deposition Graphene Growth for Efficient CO2 Reduction into Ethanol

Ju Ye Kim et al.

Summary: The study successfully synthesized a wrinkled Cu catalyst with high facets using graphene as a guiding material, achieving high ethanol selectivity and productivity. The unique atomic arrangement of the wrinkled Cu film, particularly the (310) facet, played a key role in facilitating ethanol production with a low C-C coupling barrier and preferred reaction path.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

In Situ Phase Separation into Coupled Interfaces for Promoting CO2 Electroreduction to Formate over a Wide Potential Window

Wenbin Wang et al.

Summary: Bimetallic sulfides are capable of efficient CO2 electroreduction into formate, but they undergo structural evolution under reaction conditions. Investigating the evolution process and active sites is crucial for enhancing performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Tunable Selectivity for Electrochemical CO2 Reduction by Bimetallic Cu-Sn Catalysts: Elucidating the Roles of Cu and Sn

Maolin Zhang et al.

Summary: Cu-Sn composite catalysts can be designed to selectively produce formate or CO by varying the Cu/Sn composition, thanks to the critical existence of small amounts of Cu or Sn single atoms in the catalysts.

ACS CATALYSIS (2021)

Article Chemistry, Physical

Atom vacancies induced electron-rich surface of ultrathin Bi nanosheet for efficient electrochemical CO2 reduction

Meiming Zhao et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Chemistry, Physical

Electron-Deficient Cu Sites on Cu3Ag1Catalyst Promoting CO2Electroreduction to Alcohols

Ximeng Lv et al.

ADVANCED ENERGY MATERIALS (2020)

Article Chemistry, Physical

New aspects of operando Raman spectroscopy applied to electrochemical CO2 reduction on Cu foams

Shan Jiang et al.

JOURNAL OF CHEMICAL PHYSICS (2019)

Article Chemistry, Multidisciplinary

Structural Sensitivities in Bimetallic Catalysts for Electrochemical CO2 Reduction Revealed by Ag-Cu Nanodimers

Jianfeng Huang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Article Chemistry, Physical

Mechanism of CO2 Reduction at Copper Surfaces: Pathways to C2 Products

Alejandro J. Garza et al.

ACS CATALYSIS (2018)

Article Chemistry, Physical

Improved CO2 reduction activity towards C2+ alcohols on a tandem gold on copper electrocatalyst

Carlos G. Morales-Guio et al.

NATURE CATALYSIS (2018)

Article Chemistry, Multidisciplinary

Stability of Residual Oxides in Oxide-Derived Copper Catalysts for Electrochemical CO2 Reduction Investigated with 18O Labeling

Yanwei Lum et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

Article Chemistry, Multidisciplinary

Tuning Sn-Catalysis for Electrochemical Reduction of CO2 to CO via the Core/Shell Cu/SnO2 Structure

Qing Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Physical

Electrochemical CO2 Reduction: A Classification Problem

Alexander Bagger et al.

CHEMPHYSCHEM (2017)

Article Chemistry, Physical

Cu-Sn Bimetallic Catalyst for Selective Aqueous Electroreduction of CO2 to CO

Saad Sarfraz et al.

ACS CATALYSIS (2016)

Article Nanoscience & Nanotechnology

Effect of Copper Oxide Oxidation State on the Polymer-Based Solar Cell Buffer Layers

Hsiang-Ting Lien et al.

ACS APPLIED MATERIALS & INTERFACES (2014)

Article Spectroscopy

Identification of oxygen vacancy types from Raman spectra of SnO2 nanocrystals

L. Z. Liu et al.

JOURNAL OF RAMAN SPECTROSCOPY (2012)