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Li L, Song Y, Liu J, Qin Y, Zhang H, Ban Q. Hierarchical etching-assembly engineering of Fe-based composite microspheres with balanced magnetic-dielectric synergy towards ultrahigh electromagnetic wave absorption. J Colloid Interface Sci 2024; 668:1-11. [PMID: 38669987 DOI: 10.1016/j.jcis.2024.04.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/16/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024]
Abstract
Hierarchical engineering of magnetic-dielectric composite microspheres has attracted increasing attention owing to its potential to enhance electromagnetic wave absorption (EMA) through magnetic-dielectric synergy. However, optimizing magnetic-dielectric balance in composite microspheres at the nanoscale remains a formidable task due to their limited component optimization and microstructural regulation. Herein, a novel approach is proposed to modify conventional carbonyl iron powder (CIP) microspheres via synergistic etching-assembly strategy. By applying a polydopamine coating, successive tannic acid (TA) etching-assembly, and pyrolysis, hierarchical iron@carbon-1/N-doped carbon (Fe@C-1/NC) composite microspheres are obtained. This overcomes the drawbacks of CIP microspheres, including their high density and poor impedance matching, which hinder EMA performance. Hierarchical carbon layer engineering can introduce abundant dipole centers, heterogeneous interfaces, and conductive networks to induce dielectric loss, while magnetic components contribute to magnetic resonance and eddy current loss, as demonstrated by the results. Accordingly, Fe@C-1/NC composite microspheres demonstrate a minimum reflection loss (RLmin) of -70.7 dB and an effective absorption bandwidth of 3.75 GHz at a matching thickness of 2.3 mm. Generally, this work paves the way towards CIP engineering to provide guidance to the future exploration of hierarchical magnetic-dielectric EMA materials.
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Affiliation(s)
- Luwei Li
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China
| | - Yuejie Song
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China
| | - Jie Liu
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China
| | - Yusheng Qin
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China.
| | - Hongru Zhang
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China
| | - Qingfu Ban
- School of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan Road, Yantai 264005, PR China.
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Chen W, Jin X, Zhang L, Wang L, Shi J. Modulating the Structure and Composition of Single-Atom Electrocatalysts for CO 2 reduction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304424. [PMID: 38044311 PMCID: PMC10916602 DOI: 10.1002/advs.202304424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 10/05/2023] [Indexed: 12/05/2023]
Abstract
Electrochemical CO2 reduction reaction (eCO2 RR) is a promising strategy to achieve carbon cycling by converting CO2 into value-added products under mild reaction conditions. Recently, single-atom catalysts (SACs) have shown enormous potential in eCO2 RR due to their high utilization of metal atoms and flexible coordination structures. In this work, the recent progress in SACs for eCO2 RR is outlined, with detailed discussions on the interaction between active sites and CO2 , especially the adsorption/activation behavior of CO2 and the effects of the electronic structure of SACs on eCO2 RR. Three perspectives form the starting point: 1) Important factors of SACs for eCO2 RR; 2) Typical SACs for eCO2 RR; 3) eCO2 RR toward valuable products. First, how different modification strategies can change the electronic structure of SACs to improve catalytic performance is discussed; Second, SACs with diverse supports and how supports assist active sites to undergo catalytic reaction are introduced; Finally, according to various valuable products from eCO2 RR, the reaction mechanism and measures which can be taken to improve the selectivity of eCO2 RR are discussed. Hopefully, this work can provide a comprehensive understanding of SACs for eCO2 RR and spark innovative design and modification ideas to develop highly efficient SACs for CO2 conversion to various valuable fuels/chemicals.
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Affiliation(s)
- Weiren Chen
- Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences19A Yuquan RoadBeijing100049P. R. China
| | - Xixiong Jin
- Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences19A Yuquan RoadBeijing100049P. R. China
| | - Lingxia Zhang
- Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences19A Yuquan RoadBeijing100049P. R. China
- School of Chemistry and Materials ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences1 Sub‐lane XiangshanHangzhou310024P. R. China
| | - Lianzhou Wang
- Nanomaterials CentreSchool of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD4072Australia
| | - Jianlin Shi
- Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai200050P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences19A Yuquan RoadBeijing100049P. R. China
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Jiang L, Yang Q, Xia Z, Yu X, Zhao M, Shi Q, Yu Q. Recent progress of theoretical studies on electro- and photo-chemical conversion of CO 2 with single-atom catalysts. RSC Adv 2023; 13:5833-5850. [PMID: 36816079 PMCID: PMC9932639 DOI: 10.1039/d2ra08021d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
The CO2 reduction reaction (CO2RR) into chemical products is a promising and efficient way to combat the global warming issue and greenhouse effect. The viability of the CO2RR critically rests with finding highly active and selective catalysts that can accomplish the desired chemical transformation. Single-atom catalysts (SACs) are ideal in fulfilling this goal due to the well-defined active sites and support-tunable electronic structure, and exhibit enhanced activity and high selectivity for the CO2RR. In this review, we present the recent progress of quantum-theoretical studies on electro- and photo-chemical conversion of CO2 with SACs and frameworks. Various calculated products of CO2RR with SACs have been discussed, including CO, acids, alcohols, hydrocarbons and other organics. Meanwhile, the critical challenges and the pathway towards improving the efficiency of the CO2RR have also been discussed.
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Affiliation(s)
- Liyun Jiang
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
| | - Qingqing Yang
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
| | - Zhaoming Xia
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University Beijing China
| | - Xiaohu Yu
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
| | - Mengdie Zhao
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
| | - Qiping Shi
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
| | - Qi Yu
- School of Physics and Telecommunication Engineering, School of Materials Science and Engineering, Shaanxi Laboratory of Catalysis, Shaanxi University of Technology Hanzhong 723001 China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
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A novel one-step calcination tailored single-atom iron and nitrogen co-doped carbon material catalyst for the selective reduction of CO2 to CO. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Leverett J, Daiyan R, Gong L, Iputera K, Tong Z, Qu J, Ma Z, Zhang Q, Cheong S, Cairney J, Liu RS, Lu X, Xia Z, Dai L, Amal R. Designing Undercoordinated Ni-N x and Fe-N x on Holey Graphene for Electrochemical CO 2 Conversion to Syngas. ACS NANO 2021; 15:12006-12018. [PMID: 34192868 DOI: 10.1021/acsnano.1c03293] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this study, we propose a top-down approach for the controlled preparation of undercoordinated Ni-Nx (Ni-hG) and Fe-Nx (Fe-hG) catalysts within a holey graphene framework, for the electrochemical CO2 reduction reaction (CO2RR) to synthesis gas (syngas). Through the heat treatment of commercial-grade nitrogen-doped graphene, we prepared a defective holey graphene, which was then used as a platform to incorporate undercoordinated single atoms via carbon defect restoration, confirmed by a range of characterization techniques. We reveal that these Ni-hG and Fe-hG catalysts can be combined in any proportion to produce a desired syngas ratio (1-10) across a wide potential range (-0.6 to -1.1 V vs RHE), required commercially for the Fischer-Tropsch (F-T) synthesis of liquid fuels and chemicals. These findings are in agreement with our density functional theory calculations, which reveal that CO selectivity increases with a reduction in N coordination with Ni, while unsaturated Fe-Nx sites favor the hydrogen evolution reaction (HER). The potential of these catalysts for scale up is further demonstrated by the unchanged selectivity at elevated temperature and stability in a high-throughput gas diffusion electrolyzer, displaying a high-mass-normalized activity of 275 mA mg-1 at a cell voltage of 2.5 V. Our results provide valuable insights into the implementation of a simple top-down approach for fabricating active undercoordinated single atom catalysts for decarbonized syngas generation.
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Affiliation(s)
- Josh Leverett
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Rahman Daiyan
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Lele Gong
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Kevin Iputera
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Zizheng Tong
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zhipeng Ma
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Qingran Zhang
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Soshan Cheong
- Electron Microscope Unit, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Julie Cairney
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Xunyu Lu
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Zhenhai Xia
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Liming Dai
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Rose Amal
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
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Yue T, Huang H, Chang Y, Jia J, Jia M. Controlled assembly of nitrogen-doped iron carbide nanoparticles on reduced graphene oxide for electrochemical reduction of carbon dioxide to syngas. J Colloid Interface Sci 2021; 601:877-885. [PMID: 34116474 DOI: 10.1016/j.jcis.2021.05.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 01/28/2023]
Abstract
The electrocatalytic CO2 reduction reaction (CO2RR) decreases the amount of greenhouse gas in the atmosphere while enabling a closed carbon cycle. Herein, iron oleate was used as a precursor to produce oleic acid-coated triiron tetraoxide nanoparticles (Fe3O4@OA NPs) by pyrolysis, which was then assembled with reduced graphene oxide (rGO) and doped with dicyandiamide as a nitrogen source to obtain nitrogen-doped iron carbide nanoparticles assembled on rGO (N-Fe3C/rGO NPs). The catalyst prepared by nitrogen doping at 800 °C with an Fe3O4@OA NPs to rGO weight ratio of 20:1 showed good activity and stability for the CO2RR. At -0.3 to -0.4 V, the H2/CO ratio of the product from the catalyzed CO2RR was close to 2; thus, the product can be used for Fischer-Tropsch synthesis. The results of a series of experiments and X-ray photoelectron spectroscopy analysis showed that the synergy between the CN and FeN groups in the catalyst can promote the reduction of CO2 to CO. This work demonstrates a facile method for improving the catalytic reduction of CO2.
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Affiliation(s)
- Tingting Yue
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China
| | - Haitao Huang
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China
| | - Ying Chang
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China; Fujian Provincial Key Laboratory of Fire Retardant Materials, College of Materials, Xiamen University, Xiamen 361005, China.
| | - Jingchun Jia
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China.
| | - Meilin Jia
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis and Inner Mongolia Collaborative Innovation Center for Water Environment Safety, Inner Mongolia Normal University, Hohhot 010022, China.
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From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion. Catalysts 2021. [DOI: 10.3390/catal11030351] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The global warming and the dangerous climate change arising from the massive emission of CO2 from the burning of fossil fuels have motivated the search for alternative clean and sustainable energy sources. However, the industrial development and population necessities make the decoupling of economic growth from fossil fuels unimaginable and, consequently, the capture and conversion of CO2 to fuels seems to be, nowadays, one of the most promising and attractive solutions in a world with high energy demand. In this respect, the electrochemical CO2 conversion using renewable electricity provides a promising solution. However, faradaic efficiency of common electro-catalysts is low, and therefore, the design of highly selective, energy-efficient, and cost-effective electrocatalysts is critical. Carbon-based materials present some advantages such as relatively low cost and renewability, excellent electrical conductivity, and tunable textural and chemical surface, which show them as competitive materials for the electro-reduction of CO2. In this review, an overview of the recent progress of carbon-based electro-catalysts in the conversion of CO2 to valuable products is presented, focusing on the role of the different carbon properties, which provides a useful understanding for the materials design progress in this field. Development opportunities and challenges in the field are also summarized.
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