Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.3
3.9
Journals
Catalysts
Special Issues
Heterogeneous Electrocatalysts for CO2 Reduction
share announcement

Heterogeneous Electrocatalysts for CO2 Reduction

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Electrocatalysis".

Deadline for manuscript submissions: closed (15 November 2022) | Viewed by 13159

Special Issue Editor

Prof. Dr. Linping Qian

E-Mail Website
Guest Editor
Chemistry Department, Fudan University, Shanghai 200438, China
Interests: CO2 and nitrogen electroreduction; surface property; metal cluster catalysis

Special Issue Information

Dear Colleagues,

Due to global warming and fossil fuel demand, the utilization of CO2 in value-added products has attracted much attention. The electrochemical conversion of CO2 and H2O into alcohol, hydrocarbon, synthesis gas, etc., presents a potential approach under mild conditions using renewable electricity. It is a challenge to find an electrocatalysis process with a low cost that is efficient in energy transformation and product selection.

Due to the sluggish kinetics of CO2, a high activation energy is needed to initiate CO2 electroreduction by forming the CO2•– intermediate, and thus the onset potential is significantly more negative than the equilibrium potential of CO2 reduction. Although the electroreduction of CO2 to high-energy density fuels and value-added chemical feedstocks is promising, the large overpotential of this process and the low activity and durability of the currently available catalysts still restrict this technique in terms of its large-scale commercialization.

This Special Issue is focused on the electrocatalytic CO2 reduction reaction (CO2RR) in order to establish an efficient electrocatalysis process. Substantial efforts are focused on suppressing the hydrogen evolution reaction (HER) and activating CO2 through the catalyst design.

Prof. Dr. Linping Qian
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrophobic surface modification
  • metal morphology tuning
  • metal doping
  • metal alloying
  • single-atom metal catalysis
  • metal cluster catalysis
  • crystal defects
  • site vacancy

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

14 pages, 4655 KiB  
Article
Electrolessly Deposited Carbon-Supported CuNiSn Electrocatalysts for the Electrochemical Reduction of CO2
by Wasu Chaitree, Atikom Hongmeuan, Piriya Pinthong and Joongjai Panpranot
Catalysts 2023, 13(6), 1020; https://0-doi-org.brum.beds.ac.uk/10.3390/catal13061020 - 19 Jun 2023
Viewed by 1227
Abstract
Aiming at developing low-cost, high-performance catalysts for the electrochemical reduction of CO2 (CO2-ERR) to valuable multicarbon (C2–C3) chemicals to alleviate global warming, trimetallic alloy electrocatalysts containing Cu, Ni, and Sn supported on a Pd-activated carbon fabric [...] Read more.
Aiming at developing low-cost, high-performance catalysts for the electrochemical reduction of CO2 (CO2-ERR) to valuable multicarbon (C2–C3) chemicals to alleviate global warming, trimetallic alloy electrocatalysts containing Cu, Ni, and Sn supported on a Pd-activated carbon fabric substrate (CS) were prepared via an electroless deposition method. The as-deposited CuNiSn/CS electrocatalysts were employed in CO2-ERR in an H-cell type reactor at an applied potential of −1.6 V vs. Ag/AgCl. The effect of the electroless deposition time (15, 30, and 45 min) was investigated, finding no significant structural differences according to the X-ray diffraction patterns. The evaluation of the reaction performance via linear sweep voltammetry revealed that CO2 was more effectively reduced to adsorbed species on the catalytic surface sites of the electrocatalyst prepared with a 30 min deposition time. The analysis of the gas and liquid products via gas chromatography and nuclear magnetic resonance, respectively, revealed that the Faradaic efficiency and H2 production over CuNiSn/CS was lower than those over related bimetallic and monometallic electrocatalysts, indicating the inhibition of the competitive H2 evolution reaction. Liquid products including formate, ethylene glycol, acetone, ethanol, acetate, and 1-buthanol were detected. Full article
(This article belongs to the Special Issue Heterogeneous Electrocatalysts for CO2 Reduction)
►▼ Show Figures

Figure 1

13 pages, 4647 KiB  
Article
Electrocatalytic Reduction of CO2 to C1 Compounds by Zn-Based Monatomic Alloys: A DFT Calculation
by Yixin Wang, Ming Zheng, Xin Wang and Xin Zhou
Catalysts 2022, 12(12), 1617; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12121617 - 09 Dec 2022
Cited by 6 | Viewed by 1784
Abstract
Electrocatalytic reduction of carbon dioxide to produce usable products and fuels such as alkanes, alkenes, and alcohols, is a very promising strategy. Recent experiments have witnessed great advances in precisely controlling the synthesis of single atom alloys (SAAs), which exhibit unique catalytic properties [...] Read more.
Electrocatalytic reduction of carbon dioxide to produce usable products and fuels such as alkanes, alkenes, and alcohols, is a very promising strategy. Recent experiments have witnessed great advances in precisely controlling the synthesis of single atom alloys (SAAs), which exhibit unique catalytic properties different from alloys and nanoparticles. However, only certain precious metals, such as Pd or Au, can achieve this transformation. Here, the density functional theory (DFT) calculations were performed to show that Zn-based SAAs are promising electrocatalysts for the reduction of CO2 to C1 hydrocarbons. We assume that CO2 reduction in Zn-based SAAs follows a two-step continuous reaction: first Zn reduces CO2 to CO, and then newly generated CO is captured by M and further reduced to C1 products such as methane or methanol. This work screens seven stable alloys from 16 SAAs (M = Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, V, Mo, Ti, Cr). Among them, Pd@Zn (101) and Cu@Zn (101) are promising catalysts for CO2 reduction. The reaction mechanisms of these two SAAs are discussed in detail. Both of them convert CO2 into methane via the same pathway. They are reduced by the pathway: *CO2 → *COOH → *CO + H2O; *CO → *CHO → *CH2O → *CH3O → *O + CH4 → *OH + CH4 → H2O + CH4. However, their potential determination steps are different, i.e., *CO2 → *COOH (ΔG = 0.70 eV) for Cu@Zn (101) and *CO → *CHO (ΔG = 0.72 eV) for Pd@Zn, respectively. This suggests that Zn-based SAAs can reduce CO2 to methane with a small overpotential. The solvation effect is simulated by the implicit solvation model, and it is found that H2O is beneficial to CO2 reduction. These computational results show an effective monatomic material to form hydrocarbons, which can stimulate experimental efforts to explore the use of SAAs to catalyze CO2 electrochemical reduction to hydrocarbons. Full article
(This article belongs to the Special Issue Heterogeneous Electrocatalysts for CO2 Reduction)
►▼ Show Figures

Graphical abstract

11 pages, 1006 KiB  
Communication
Efficient CO2 Electroreduction over Silver Hollow Fiber Electrode
by Shoujie Li, Xiao Dong, Wei Chen, Yanfang Song, Guihua Li, Wei Wei and Yuhan Sun
Catalysts 2022, 12(5), 453; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12050453 - 19 Apr 2022
Cited by 7 | Viewed by 2232
Abstract
Electrocatalytic reduction of CO2 to fuels and chemicals is one of the most attractive routes for CO2 utilization. However, low efficiency and poor stability restrict the practical application of most conventional electrocatalysts. Here, a silver hollow fiber electrode is presented as [...] Read more.
Electrocatalytic reduction of CO2 to fuels and chemicals is one of the most attractive routes for CO2 utilization. However, low efficiency and poor stability restrict the practical application of most conventional electrocatalysts. Here, a silver hollow fiber electrode is presented as a novel self-supported gas diffusion electrode for efficient and stable CO2 electroreduction to CO. A CO faradaic efficiency of over 92% at current densities of above 150 mA∙cm−2 is achieved in 0.5 M KHCO3 for over 100 h, which is comparable to the most outstanding Ag-based electrocatalysts. The electrochemical results suggest the excellent electrocatalytic performance of silver hollow fiber electrode is attributed to the unique pore structures providing abundant active sites and favorable mass transport, which not only suppresses the competitive hydrogen evolution reaction (HER) but also facilitates the CO2 reduction kinetics. Full article
(This article belongs to the Special Issue Heterogeneous Electrocatalysts for CO2 Reduction)
►▼ Show Figures

Figure 1

Review

Jump to: Research

37 pages, 8301 KiB  
Review
Recent Progress in Surface-Defect Engineering Strategies for Electrocatalysts toward Electrochemical CO2 Reduction: A Review
by Sridharan Balu, Abdul Hanan, Harikrishnan Venkatesvaran, Shih-Wen Chen, Thomas C.-K. Yang and Mohammad Khalid
Catalysts 2023, 13(2), 393; https://0-doi-org.brum.beds.ac.uk/10.3390/catal13020393 - 11 Feb 2023
Cited by 13 | Viewed by 2715
Abstract
Climate change, caused by greenhouse gas emissions, is one of the biggest threats to the world. As per the IEA report of 2021, global CO2 emissions amounted to around 31.5 Gt, which increased the atmospheric concentration of CO2 up to 412.5 [...] Read more.
Climate change, caused by greenhouse gas emissions, is one of the biggest threats to the world. As per the IEA report of 2021, global CO2 emissions amounted to around 31.5 Gt, which increased the atmospheric concentration of CO2 up to 412.5 ppm. Thus, there is an imperative demand for the development of new technologies to convert CO2 into value-added feedstock products such as alcohols, hydrocarbons, carbon monoxide, chemicals, and clean fuels. The intrinsic properties of the catalytic materials are the main factors influencing the efficiency of electrochemical CO2 reduction (CO2-RR) reactions. Additionally, the electroreduction of CO2 is mainly affected by poor selectivity and large overpotential requirements. However, these issues can be overcome by modifying heterogeneous electrocatalysts to control their morphology, size, crystal facets, grain boundaries, and surface defects/vacancies. This article reviews the recent progress in electrochemical CO2 reduction reactions accomplished by surface-defective electrocatalysts and identifies significant research gaps for designing highly efficient electrocatalytic materials. Full article
(This article belongs to the Special Issue Heterogeneous Electrocatalysts for CO2 Reduction)
►▼ Show Figures

Graphical abstract

27 pages, 3020 KiB  
Review
Recent Advances in Heterogeneous Electroreduction of CO2 on Copper-Based Catalysts
by Bowen Wu, Jian Chen and Linping Qian
Catalysts 2022, 12(8), 860; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12080860 - 04 Aug 2022
Cited by 14 | Viewed by 4518
Abstract
Facing greenhouse effects and the rapid exhaustion of fossil fuel, CO2 electrochemical reduction presents a promising method of environmental protection and energy transformation. Low onset potential, large current density, high faradaic efficiency (FE), and long-time stability are required for industrial production, due [...] Read more.
Facing greenhouse effects and the rapid exhaustion of fossil fuel, CO2 electrochemical reduction presents a promising method of environmental protection and energy transformation. Low onset potential, large current density, high faradaic efficiency (FE), and long-time stability are required for industrial production, due to economic costs and energy consumption. This minireview showcases the recent progress in catalyst design and engineering technology in CO2 reduction reaction (CO2RR) on copper based-catalysts. We focus on strategies optimizing the performance of copper-based catalysts, such as single-atom catalysts, doping, surface modification, crystal facet engineering, etc., and reactor design including gas diffusion layer, membrane electrode assembly, etc., in enhancing target electroreduction products including methane, methanol, ethylene, and C2+ oxygenates. The determination of the correlation and the developed technology might be helpful for future applications in the industry. Full article
(This article belongs to the Special Issue Heterogeneous Electrocatalysts for CO2 Reduction)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop