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Wang X, Chen J, Dong C, Wang D, Mao Z. Hard Carbon Derived from Graphite Anode by Mechanochemistry and the Enhanced Lithium‐Ion Storage Performance. ChemElectroChem 2022. [DOI: 10.1002/celc.202101613] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaotong Wang
- Tianjin University of Technology School of Materials Science and Engineering CHINA
| | - Jingjing Chen
- Tianjin University of Technology School of Materials Science and Engineering CHINA
| | - Chenlong Dong
- Tianjin University of Technology School of Mateirals Science and Engineering CHINA
| | - Dajian Wang
- Tianjin University of Technology School of Materials Science and Engineering CHINA
| | - Zhiyong Mao
- School of Materials Science and Engineering, Tianjin University of Technology No 391. Binshui west road. Xiqing 300384 Tianjin CHINA
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2
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Malik S, Marchesan S. Growth, Properties, and Applications of Branched Carbon Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2728. [PMID: 34685169 PMCID: PMC8540255 DOI: 10.3390/nano11102728] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/07/2021] [Accepted: 10/12/2021] [Indexed: 12/19/2022]
Abstract
Nanomaterials featuring branched carbon nanotubes (b-CNTs), nanofibers (b-CNFs), or other types of carbon nanostructures (CNSs) are of great interest due to their outstanding mechanical and electronic properties. They are promising components of nanodevices for a wide variety of advanced applications spanning from batteries and fuel cells to conductive-tissue regeneration in medicine. In this concise review, we describe the methods to produce branched CNSs, with particular emphasis on the most widely used b-CNTs, the experimental and theoretical studies on their properties, and the wide range of demonstrated and proposed applications, highlighting the branching structural features that ultimately allow for enhanced performance relative to traditional, unbranched CNSs.
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Affiliation(s)
- Sharali Malik
- Karlsruhe Institute of Technology, Institute of Quantum Materials and Technology, Hermann-von-Helmholtz-Platz 1, 76131 Karlsruhe, Germany
| | - Silvia Marchesan
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy;
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3
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Qiu L, Zhou S, Li Y, Rui W, Cui P, Zhang C, Yu Y, Wang C, Wang X, Wang J, Jiang P. Silica-Coated Fe 3O 4 Nanoparticles as a Bifunctional Agent for Magnetic Resonance Imaging and ZnII Fluorescent Sensing. Technol Cancer Res Treat 2021; 20:15330338211036539. [PMID: 34350798 PMCID: PMC8358497 DOI: 10.1177/15330338211036539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Bifunctional magnetic/fluorescent core-shell silica nanospheres (MNPs) encapsulated with the magnetic Fe3O4 core and a derivate of 8-amimoquinoline (N-(quinolin-8-yl)-2-(3-(triethoxysilyl) propylamino) acetamide) (QTEPA) into the shell were synthesized. These functional MNPs were prepared with a modified stöber method and the formed Fe3O4@SiO2-QTEPA core-shell nanocomposites are biocompatible, water-dispersible, and stable. These prepared nanoparticles were characterized by X-ray power diffraction (XRD), transmission electron microscopy (TEM), thermoelectric plasma Quad II inductively coupled plasma mass spectrometry (ICP-MS), superconducting quantum interference device (SQUID), TG/DTA thermal analyzer (TGA) and Fourier transform infrared spectroscopy (FTIR). Further application of the nanoparticles in detecting Zn2+ was confirmed by the fluorescence experiment: the nanosensor shows high selectivity and sensitivity to Zn2+ with a 22-fold fluorescence emission enhancement in the presence of 10 μM Zn2+. Moreover, the transverse relaxivity measurements show that the core-shell MNPs have T2 relaxivity (r2) of 155.05 mM-1 S-1 based on Fe concentration on the 3.0 T scanner, suggesting that the compound can be used as a negative contrast agent for MRI. Further in vivo experiments showed that these MNPs could be used as MRI contrast agent. Therefore, the new nanosensor provides the dual modality of magnetic resonance imaging and optical imaging.
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Affiliation(s)
- Lin Qiu
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China.,Jiangsu Science Standard Medical Testing Co., Ltd, Changzhou, Jiangsu, People's Republic of China
| | - Shuwen Zhou
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China.,The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, People's Republic of China
| | - Ying Li
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China
| | - Wen Rui
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China
| | - Pengfei Cui
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China.,The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, People's Republic of China
| | - Changli Zhang
- School of Environmental Science, 74587Nanjing Xiaozhuang University, Nanjing, People's Republic of China
| | - Yongsheng Yu
- Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, 481875Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Cheng Wang
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China.,The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, People's Republic of China
| | - Xiang Wang
- The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, People's Republic of China
| | - Jianhao Wang
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China.,School of Environmental Science, 74587Nanjing Xiaozhuang University, Nanjing, People's Republic of China.,Changzhou Le Sun Pharmaceuticals Co., Ltd, Changzhou, Jiangsu, People's Republic of China
| | - Pengju Jiang
- School of Pharmacy & School of Medicine, 12412Changzhou University, Changzhou, People's Republic of China
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4
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Begum H, Ahmed MS, Kim YB. Nitrogen-rich graphitic-carbon@graphene as a metal-free electrocatalyst for oxygen reduction reaction. Sci Rep 2020; 10:12431. [PMID: 32709940 PMCID: PMC7381605 DOI: 10.1038/s41598-020-68260-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 04/09/2020] [Indexed: 12/14/2022] Open
Abstract
The metal-free nitrogen-doped graphitic-carbon@graphene (Ng-C@G) is prepared from a composite of polyaniline and graphene by a facile polymerization following by pyrolysis for electrochemical oxygen reduction reaction (ORR). Pyrolysis creates a sponge-like with ant-cave-architecture in the polyaniline derived nitrogenous graphitic-carbon on graphene. The nitrogenous carbon is highly graphitized and most of the nitrogen atoms are in graphitic and pyridinic forms with less oxygenated is found when pyrolyzed at 800 °C. The electrocatalytic activity of Ng-C@G-800 is even better than the benchmarked Pt/C catalyst resulting in the higher half-wave potential (8 mV) and limiting current density (0.74 mA cm-2) for ORR in alkaline medium. Higher catalytic performance is originated from the special porous structure at microscale level and the abundant graphitic- and pyridinic-N active sites at the nanoscale level on carbon-graphene matrix which are beneficial to the high O2-mass transportation to those accessible sites. Also, it possesses a higher cycle stability resulting in the negligible potential shift and slight oxidation of pyridinic-N with better tolerance to the methanol.
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Affiliation(s)
- Halima Begum
- Department of Mechanical Engineering, Chonnam National University, Gwangju, Republic of Korea
| | | | - Young-Bae Kim
- Department of Mechanical Engineering, Chonnam National University, Gwangju, Republic of Korea.
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5
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Improvement of Catalytic Activity of Platinum Nanoparticles Decorated Carbon Graphene Composite on Oxygen Electroreduction for Fuel Cells. Processes (Basel) 2019. [DOI: 10.3390/pr7090586] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
High-performance platinum (Pt)-based catalyst development is crucially important for reducing high overpotential of sluggish oxygen reduction reaction (ORR) at Pt-based electrocatalysts, although the high cost and scarcity in nature of Pt are profoundly hampering the practical use of it in fuel cells. Thus, the enhancing activity of Pt-based electrocatalysts with minimal Pt-loading through alloy, core−shell or composite making has been implemented. This article deals with enhancing electrocatalytic activity on ORR of commercially available platinum/carbon (Pt/C) with graphene sheets through a simple composite making. The Pt/C with graphene sheets composite materials (denoted as Pt/Cx:G10−x) have been characterized by several instrumental measurements. It shows that the Pt nanoparticles (NPs) from the Pt/C have been transferred towards the π-conjugated systems of the graphene sheets with better monolayer dispersion. The optimized Pt/C8:G2 composite has higher specific surface area and better degree of graphitization with better dispersion of NPs. As a result, it shows not only stable electrochemical surface area but also enhanced ORR catalytic activity in respect to the onset potential, mass activity and electron transfer kinetics. As shown by the ORR, the Pt/C8:G2 composite is also better resistive to the alcohol crossover effect and more durable than the Pt/C.
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6
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Giussi JM, Cortez ML, Marmisollé WA, Azzaroni O. Practical use of polymer brushes in sustainable energy applications: interfacial nanoarchitectonics for high-efficiency devices. Chem Soc Rev 2019; 48:814-849. [PMID: 30543263 DOI: 10.1039/c8cs00705e] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The discovery and development of novel approaches, materials and manufacturing processes in the field of energy are compelling increasing recognition as a major challenge for contemporary societies. The performance and lifetime of energy devices are critically dependent on nanoscale interfacial phenomena. From the viewpoint of materials design, the improvement of current technologies inevitably relies on gaining control over the complex interface between dissimilar materials. In this sense, interfacial nanoarchitectonics with polymer brushes has seen growing interest due to its potential to overcome many of the limitations of energy storage and conversion devices. Polymer brushes offer a broad variety of resources to manipulate interfacial properties and gain molecular control over the synergistic combination of materials. Many recent examples show that the rational integration of polymer brushes in hybrid nanoarchitectures greatly improves the performance of energy devices in terms of power density, lifetime and stability. Seen in this light, polymer brushes provide a new perspective from which to consider the development of hybrid materials and devices with improved functionalities. The aim of this review is therefore to focus on what polymer brush-based solutions can offer and to show how the practical use of surface-grafted polymer layers can improve the performance and efficiency of fuel cells, lithium-ion batteries, organic radical batteries, supercapacitors, photoelectrochemical cells and photovoltaic devices.
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Affiliation(s)
- Juan M Giussi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, Diagonal 113 y 64 (1900), La Plata, Argentina.
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7
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δ-MnO2 nanoflowers on sulfonated graphene sheets for stable oxygen reduction and hydrogen evolution reaction. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.073] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Bai L, Liu Y, Ding A, Ren N, Li G, Liang H. Surface coating of UF membranes to improve antifouling properties: A comparison study between cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs). CHEMOSPHERE 2019; 217:76-84. [PMID: 30414545 DOI: 10.1016/j.chemosphere.2018.10.219] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/28/2018] [Accepted: 10/30/2018] [Indexed: 05/27/2023]
Abstract
The inherent properties of hydrophilicity and environmental preferability of cellulose nanocrystals (CNCs) and cellulose nanofibers (CNFs) make them great candidates for application in water-treatment membranes. In this study, the antifouling properties of CNCs and CNFs, modified ultrafiltration (UF) membranes, were directly compared. A facile modification method was conducted by coating CNCs and CNFs on the surface of polyethersulfone (PES) membranes to prepare CNC-coating membranes and the CNF-coating membranes. Membrane surface morphology was characterized by atomic force microscopy (AFM), and the results showed that the CNF-coating membranes exhibited greater surface roughness than the CNC-coating membranes. Pure water flux measurements demonstrated that the flux of the CNC-coating membranes was slightly lower than that of the CNF-coating membranes. Antifouling properties were evaluated and compared for the two types of membranes by filtration of NOM foulant models, humic acid (HA) and bovine serum albumin (BSA). The results showed that the antifouling properties of the modified membranes were enhanced through the coating of either CNCs or CNFs to a control PES membrane. The CNC-coating membranes outperformed the CNF-coating membranes in alleviating both reversible fouling and irreversible fouling caused by HA and BSA. In addition, the antifouling performance of the coating membranes was enhanced with increased coating content.
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Affiliation(s)
- Langming Bai
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Yatao Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - An Ding
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Guibai Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
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9
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Zan Y, Zhang Z, Dou M, Wang F. Enhancement mechanism of sulfur dopants on the catalytic activity of N and P co-doped three-dimensional hierarchically porous carbon as a metal-free oxygen reduction electrocatalyst. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01387c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A sulfur, nitrogen and phosphorus ternary-doped cattle-bone-derived hierarchically porous carbon metal-free electrocatalyst was synthesized, exhibiting superior oxygen reduction performance compared to Pt/C.
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Affiliation(s)
- Yongxi Zan
- State Key Laboratory of Chemical Resource Engineering
- Laboratory of Electrochemical Process and Technology for Materials
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Zhengping Zhang
- State Key Laboratory of Chemical Resource Engineering
- Laboratory of Electrochemical Process and Technology for Materials
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Meiling Dou
- State Key Laboratory of Chemical Resource Engineering
- Laboratory of Electrochemical Process and Technology for Materials
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Feng Wang
- State Key Laboratory of Chemical Resource Engineering
- Laboratory of Electrochemical Process and Technology for Materials
- Beijing University of Chemical Technology
- Beijing 100029
- China
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10
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Abstract
The exploration of highly active and durable cathodic oxygen reduction reaction (ORR) catalysts with economical production costs is still the bottleneck to realize the large-scale commercialization of fuel cells. In recent years, remarkable progress has been achieved in fabricating effective non-precious metal based ORR catalysts. In particular, modified carbon materials have aroused extensive research interest because of their excellent performance and low cost. In this review, we present an overview on recent advancements in developing defective carbon based materials for catalyzing the ORR. In particular, three general kinds of defective carbon electrocatalysts will be summarized. They are non-metal induced defective carbons (modified by heteroatoms), intrinsic defective carbons (defects created by a physical or chemical method), and atomic metal species induced/coordinated defective carbons (metal-macrocycle complexes with different coordination environments). The common configurations of various defective carbons will be discussed, with typical examples on recently developed both metal-free and precious/non-precious metal species coordinated carbons. Finally, the future research directions of the defective carbon materials are proposed. The newly established defect promoted catalysis mechanism will be beneficial for the design and fabrication of highly effective electrocatalysts for practical energy storage and conversion applications.
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Affiliation(s)
- Xuecheng Yan
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, QLD 4111, Australia.
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11
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Wang S, Li S, Hou C, Ma G, Wang H, Wu J, Hao X, Zhang H. Functionalization of multiwalled carbon nanotubes by amidation and Michael addition reactions and the effect of the functional chains on the properties of waterborne polyurethane composites. J Appl Polym Sci 2018. [DOI: 10.1002/app.46757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Shaohui Wang
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
- Shanxi Key Laboratory of Functional Polymers for Coatings; Shanxi Research Institute of Applied Chemistry; Taiyuan 030027 China
| | - Shasha Li
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
| | - Caiying Hou
- Shanxi Key Laboratory of Functional Polymers for Coatings; Shanxi Research Institute of Applied Chemistry; Taiyuan 030027 China
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
| | - Guozhang Ma
- Shanxi Key Laboratory of Functional Polymers for Coatings; Shanxi Research Institute of Applied Chemistry; Taiyuan 030027 China
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
| | - Hezhi Wang
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
- Shanxi Key Laboratory of Functional Polymers for Coatings; Shanxi Research Institute of Applied Chemistry; Taiyuan 030027 China
| | - Jianbin Wu
- Shanxi Key Laboratory of Functional Polymers for Coatings; Shanxi Research Institute of Applied Chemistry; Taiyuan 030027 China
| | - Xiaogang Hao
- College of Chemistry and Chemical Engineering; Taiyuan University of Technology; Taiyuan 030024 China
| | - Hui Zhang
- Department of Chemical and Biochemical Engineering; University of Western Ontario; London Ontario N6A 5B9 Canada
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12
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Jeon IY, Noh HJ, Baek JB. Hyperbranched Macromolecules: From Synthesis to Applications. Molecules 2018; 23:E657. [PMID: 29538327 PMCID: PMC6017023 DOI: 10.3390/molecules23030657] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 11/16/2022] Open
Abstract
Hyperbranched macromolecules (HMs, also called hyperbranched polymers) are highly branched three-dimensional (3D) structures in which all bonds converge to a focal point or core, and which have a multiplicity of reactive chain-ends. This review summarizes major types of synthetic strategies exploited to produce HMs, including the step-growth polycondensation, the self-condensing vinyl polymerization and ring opening polymerization. Compared to linear analogues, the globular and dendritic architectures of HMs endow new characteristics, such as abundant functional groups, intramolecular cavities, low viscosity, and high solubility. After discussing the general concepts, synthesis, and properties, various applications of HMs are also covered. HMs continue being materials for topical interest, and thus this review offers both concise summary for those new to the topic and for those with more experience in the field of HMs.
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Affiliation(s)
- In-Yup Jeon
- Department of Chemical Engineering, Wonkwang University, 460, Iksandae-ro, Iksan, Jeonbuk 54538, Korea.
| | - Hyuk-Jun Noh
- School of Energy and Chemical Engineering/Center for Dimension-Controllable Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 50, UNIST, Ulsan 44919, Korea.
| | - Jong-Beom Baek
- School of Energy and Chemical Engineering/Center for Dimension-Controllable Organic Frameworks, Ulsan National Institute of Science and Technology (UNIST), 50, UNIST, Ulsan 44919, Korea.
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13
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Duan X, Xu J, Wei Z, Ma J, Guo S, Wang S, Liu H, Dou S. Metal-Free Carbon Materials for CO 2 Electrochemical Reduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701784. [PMID: 28892195 DOI: 10.1002/adma.201701784] [Citation(s) in RCA: 266] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 06/04/2017] [Indexed: 05/24/2023]
Abstract
The rapid increase of the CO2 concentration in the Earth's atmosphere has resulted in numerous environmental issues, such as global warming, ocean acidification, melting of the polar ice, rising sea level, and extinction of species. To search for suitable and capable catalytic systems for CO2 conversion, electrochemical reduction of CO2 (CO2 RR) holds great promise. Emerging heterogeneous carbon materials have been considered as promising metal-free electrocatalysts for the CO2 RR, owing to their abundant natural resources, tailorable porous structures, resistance to acids and bases, high-temperature stability, and environmental friendliness. They exhibit remarkable CO2 RR properties, including catalytic activity, long durability, and high selectivity. Here, various carbon materials (e.g., carbon fibers, carbon nanotubes, graphene, diamond, nanoporous carbon, and graphene dots) with heteroatom doping (e.g., N, S, and B) that can be used as metal-free catalysts for the CO2 RR are highlighted. Recent advances regarding the identification of active sites for the CO2 RR and the pathway of reduction of CO2 to the final product are comprehensively reviewed. Additionally, the emerging challenges and some perspectives on the development of heteroatom-doped carbon materials as metal-free electrocatalysts for the CO2 RR are included.
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Affiliation(s)
- Xiaochuan Duan
- School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005, P. R. China
| | - Jiantie Xu
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, 2500, Australia
| | - Zengxi Wei
- School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Jianmin Ma
- School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China
| | - Shaojun Guo
- Department of Materials Science and Engineering and Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Shuangyin Wang
- State Key Laboratory of Chem-/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Huakun Liu
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, 2500, Australia
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, 2500, Australia
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14
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Li Q, Zhang S, Liao G, Yi C, Xu Z. Novel fluorinated hyperbranched polyimides with excellent thermal stability, UV-shielding property, organosolubility, and low dielectric constants. HIGH PERFORM POLYM 2017. [DOI: 10.1177/0954008317734034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel fluorinated aromatic triamine, named 1,3,5-tris (4-(2-trifluoromethyl-4-aminophenoxy)phenyl) benzene (TTFAPOPB), with several –CF3 groups, prolonged chain segments, and ether bonds was first successfully synthesized via a three-step reaction. Then a series of fluorinated hyperbranched polyimides (FHBPIs) with terminal amino or anhydride groups were prepared by condensation polymerization, which were derived from three commercial dianhydrides and the obtained triamine. The prepared FHBPIs showed excellent optical properties with the transmittance reaching 94.5% at 800 nm, favorable ultraviolet (UV)-shielding property with only 27% photodegradation of methylene blue solution after intense UV irradiation for 50 min, good thermal stability with glass transition temperature between 225°C and 264°C, and 10% weight loss temperature of 520–555°C and 509–541°C, respectively, in nitrogen and air atmosphere. They also exhibited relatively good mechanical properties with tensile strength, tensile modulus, and elongation at break values of 64.2–84.2 MPa, 1.2–1.5 GPa, and 6–10%, respectively. Moreover, the introduction of –CF3 and hyperbranched architecture reduced the dielectric constants of the FHBPIs to 2.69–2.92 and increased the surface contact angles to more than 98°. Thus, the FHBPIs are promising dielectric or UV-shielding materials.
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Affiliation(s)
- Qing Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei, China
| | - Shulai Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei, China
| | - Guangfu Liao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei, China
| | - Changfeng Yi
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei, China
| | - Zushun Xu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei, China
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15
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Seo JM, Tan LS, Baek JB. Defect/Edge-Selective Functionalization of Carbon Materials by "Direct" Friedel-Crafts Acylation Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606317. [PMID: 28220965 DOI: 10.1002/adma.201606317] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/26/2016] [Indexed: 06/06/2023]
Abstract
Popularly utilized oxidation media, via nitric acid/sulfuric acid mixtures, are too corrosive and oxidizing to preserve structural integrity of highly ordered graphitic materials (carbon nanotubes (CNTs) and graphene). Here, for the most commonly used oxidation method, the important advantages of defect/edge-selective functionalization of carbon materials (CNTs/graphene/graphite) in a polyphosphoric acid (PPA)/phosphorous pentoxide (P2 O5 ) medium are elucidated. The optimized PPA/P2 O5 medium is a mild acid that is not only less corrosive than popularly utilized oxidation media, but also has a strong capability to drive Friedel-Crafts acylation by covalently modifying carbon materials. With a broader spectrum of functional groups accessible, the PPA/P2 O5 -driven Friedel-Crafts acylation offers more options for tailoring the properties and processing of carbon materials.
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Affiliation(s)
- Jeong-Min Seo
- Center for Dimension-Controllable Organic Framework, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST, Ulsan, 44919, Republic of Korea
| | - Loon-Seng Tan
- Functional Materials Division, Materials & Manufacturing Directorate, AFRL/RXAS, US Air Force Research Laboratory, 1864 4th St, Wright-Patterson AFB, OH, 45433, USA
| | - Jong-Beom Baek
- Center for Dimension-Controllable Organic Framework, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST, Ulsan, 44919, Republic of Korea
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16
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Wang Y, Guan X, Chen F, Zhu S, Ye Y, Peng H, Zhou X, Xie X, Mai Y. Noncovalent immobilization of pyrene-terminated hyperbranched triazole-based polymeric ionic liquid onto graphene for highly active and recyclable catalysis of CO2/epoxide cycloaddition. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01259d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Combination of bifunctional HBP and rGO for highly active, selective and recyclable catalysis for CO2/epoxide cycloaddition.
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Affiliation(s)
- Yong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Xin Guan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Fangyan Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Shuaishuai Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Yunsheng Ye
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Haiyan Peng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Xingping Zhou
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Xiaolin Xie
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Yiuwing Mai
- Centre for Advanced Materials Technology (CAMT)
- School of Aerospace, Mechanical and Mechatronic Engineering J07
- The University of Sydney
- Sydney
- Australia
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17
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Zhang C, Yu C, Lu Y, Li H, Chen Y, Huo H, Hamley IW, Jiang S. Hydrodynamic behaviors of amphiphilic dendritic polymers with different degrees of amidation. Polym Chem 2016. [DOI: 10.1039/c6py00394j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This work highlights the structure evolution and the response to solvent quality of ADPs.
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Affiliation(s)
- Cuiyun Zhang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Cong Yu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Yuyuan Lu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Hongfei Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Yu Chen
- Department of Chemistry
- School of Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Hong Huo
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Ian William Hamley
- School of Chemistry
- Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | - Shichun Jiang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
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18
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Li H, Chen Q, Han BH. Sugar-functionalized triptycenes used for dispersion of single-walled carbon nanotubes in aqueous solution by supramolecular interaction. NEW J CHEM 2016. [DOI: 10.1039/c5nj03075g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two water-soluble sugar-functionalized triptycene derivatives were synthesized and used for dispersion of SWCNTs in aqueous solution via supramolecular interaction.
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Affiliation(s)
- Hui Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
- National Center for Nanoscience and Technology
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| | - Qi Chen
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Bao-Hang Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
- National Center for Nanoscience and Technology
- Beijing 100190
- China
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19
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Bai L, Liang H, Crittenden J, Qu F, Ding A, Ma J, Du X, Guo S, Li G. Surface modification of UF membranes with functionalized MWCNTs to control membrane fouling by NOM fractions. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.06.006] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Song H, Yang L, Tang Y, Yan D, Liu C, Luo S. Three‐Dimensional Nitrogen‐Doped Reduced Graphene Oxide–Carbon Nanotubes Architecture Supporting Ultrafine Palladium Nanoparticles for Highly Efficient Methanol Electrooxidation. Chemistry 2015; 21:16631-8. [DOI: 10.1002/chem.201502804] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Hejie Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory for Cost‐Effective Utilization of Fossil Fuel Aimed at Reducing Carbon Dioxide Emissions, Hunan University, Changsha 410082 (P. R. China)
| | - Liming Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory for Cost‐Effective Utilization of Fossil Fuel Aimed at Reducing Carbon Dioxide Emissions, Hunan University, Changsha 410082 (P. R. China)
| | - Yanhong Tang
- College of Materials Science and Engineering, Hunan University, Changsha 410082 (P. R. China)
| | - Dafeng Yan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory for Cost‐Effective Utilization of Fossil Fuel Aimed at Reducing Carbon Dioxide Emissions, Hunan University, Changsha 410082 (P. R. China)
| | - Chengbin Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory for Cost‐Effective Utilization of Fossil Fuel Aimed at Reducing Carbon Dioxide Emissions, Hunan University, Changsha 410082 (P. R. China)
| | - Shenglian Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory for Cost‐Effective Utilization of Fossil Fuel Aimed at Reducing Carbon Dioxide Emissions, Hunan University, Changsha 410082 (P. R. China)
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21
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Li W, Yang D, Chen H, Gao Y, Li H. Sulfur-doped carbon nanotubes as catalysts for the oxygen reduction reaction in alkaline medium. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.03.022] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Liu S, Zhang Q, Li Y, Han M, Gu L, Nan C, Bao J, Dai Z. Five-Fold Twinned Pd2NiAg Nanocrystals with Increased Surface Ni Site Availability to Improve Oxygen Reduction Activity. J Am Chem Soc 2015; 137:2820-3. [DOI: 10.1021/ja5129154] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suli Liu
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials
and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Qinghua Zhang
- Department
of Materials Science and Engineering, State Key Lab of New Ceramics
and Fine Processing, Tsinghua University, Beijing 100084, P. R. China
| | - Yafei Li
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials
and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Min Han
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials
and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Lin Gu
- Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Collaborative
Innovation Center of Quantum Matter, Beijing 100190, P. R. China
| | - Cewen Nan
- Department
of Materials Science and Engineering, State Key Lab of New Ceramics
and Fine Processing, Tsinghua University, Beijing 100084, P. R. China
| | - Jianchun Bao
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials
and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Zhihui Dai
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials
and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
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23
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Shen M, Ruan C, Chen Y, Jiang C, Ai K, Lu L. Covalent entrapment of cobalt-iron sulfides in N-doped mesoporous carbon: extraordinary bifunctional electrocatalysts for oxygen reduction and evolution reactions. ACS APPLIED MATERIALS & INTERFACES 2015; 7:1207-18. [PMID: 25531776 DOI: 10.1021/am507033x] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
To alleviate the kinetic barriers associated with ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) in electrochemical systems, efficient nonprecious electrocatalysts are urgently required. Here we report a facile soft-template mediated approach for fabrication of nanostructured cobalt-iron double sulfides that are covalently entrapped in nitrogen-doped mesoporous graphitic carbon (Co0.5Fe0.5S@N-MC). Notably, with a positive half-wave potential (0.808 V) and a high diffusion-limiting current density, the composite material delivers unprecedentedly striking ORR electrocatalytic activity among recently reported nonprecious late transition metal chalcogenide materials in alkaline medium. Various characterization techniques, including X-ray absorption spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction, are conducted to elucidate the correlation between structural features and catalytic activities of the composite. Moderate substitution and well-dispersion of iron in bimetallic sulfide composites are believed to have positive effect on the adsorption and activation of oxygen-containing species, thus leading to conspicuous ORR and OER catalytic enhancement compared to their monometallic counterparts. Besides, the covalent bridge between active sulfide particles and mesoporous carbon shells provides facile pathways for electron and mass transport. Beneficially, the intimate coupling interaction renders prolonged electrocatalytic performances to the composite. Our results may possibly lend a new impetus to the rational design of bi- or multimetallic sulfides encapsulated in porous carbon with improved performance for electrocatalysis and energy storage applications.
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Affiliation(s)
- Mengxia Shen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, 130022, P. R. China
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24
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Abstract
Primary/secondary covalent/non-covalent interactions between dendritic polymers and nanomaterials can change the physicochemical properties, such as shape, of the obtained hybrid nanomaterials.
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Affiliation(s)
- R. Soleyman
- Polymer Science and Technology Division
- Research Institute of Petroleum Industry (RIPI)
- Tehran
- Iran
| | - M. Adeli
- Department of Chemistry
- Faculty of Science
- Lorestan University
- Khorramabad
- Iran
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25
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Hao GP, Sahraie NR, Zhang Q, Krause S, Oschatz M, Bachmatiuk A, Strasser P, Kaskel S. Hydrophilic non-precious metal nitrogen-doped carbon electrocatalysts for enhanced efficiency in oxygen reduction reaction. Chem Commun (Camb) 2015; 51:17285-8. [DOI: 10.1039/c5cc06256j] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of surface hydrophilicity of non-precious metal N-doped carbon electrocatalysts is found to be positive in enhancing catalysis efficiency for oxygen reduction reaction.
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Affiliation(s)
- Guang-Ping Hao
- Department of Inorganic Chemistry
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Nastaran Ranjbar Sahraie
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
- Department of Chemistry
- Chemical Engineering Division
- Technical University Berlin
- 10623 Berlin
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Simon Krause
- Department of Inorganic Chemistry
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Martin Oschatz
- Department of Inorganic Chemistry
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Alicja Bachmatiuk
- IFW Dresden
- Institute of Complex Materials
- Dresden
- Germany
- Center of Polymer and Carbon Materials
| | - Peter Strasser
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory
- Department of Chemistry
- Chemical Engineering Division
- Technical University Berlin
- 10623 Berlin
| | - Stefan Kaskel
- Department of Inorganic Chemistry
- Technische Universität Dresden
- 01069 Dresden
- Germany
- Fraunhofer Institute for Material and Beam Technology
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26
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Preparation of nitrogen-doped graphene supporting Pt nanoparticles as a catalyst for oxygen reduction and methanol oxidation. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.06.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Zhang M, Yuan W, Yao B, Li C, Shi G. Solution-processed PEDOT:PSS/graphene composites as the electrocatalyst for oxygen reduction reaction. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3587-3593. [PMID: 24456474 DOI: 10.1021/am405771y] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Composites of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and reduced graphene oxide (rGO) have been prepared by solution mixing and applied as electrocatalysts for oxygen reduction reaction (ORR) after treatment with concentrated H2SO4. The blending of rGO induces the conformational change of PEDOT chains from benzoid to quionoid structure and charge transfer from rGO to PEDOT. H2SO4 post-treatment can remove part of insulating PSS from the surface of the PEDOT:PSS/rGO composite film, resulting in a significant conductivity enhancement of the composite. This synergistic effect makes the H2SO4-treated PEDOT:PSS/rGO composite a promising catalyst for ORR. It exhibits enhanced electrocatalytic activity, better tolerance to a methanol crossover effect and CO poisoning, and longer durability than those of the platinum/carbon catalyst.
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Affiliation(s)
- Miao Zhang
- Department of Chemistry and Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University , Beijing 100084, China
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28
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Song Z, Dai J, Zhao S, Zhou Y, Su F, Cui J, Yan Y. Aqueous dispersion of pristine single-walled carbon nanotubes prepared by using a vinylimidazole-based polymer dispersant. RSC Adv 2014. [DOI: 10.1039/c3ra42864h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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Karaki M, Karout A, Toufaily J, Rataboul F, Essayem N, Lebeau B. Synthesis and characterization of acidic ordered mesoporous organosilica SBA-15: Application to the hydrolysis of cellobiose and insight into the stability of the acidic functions. J Catal 2013. [DOI: 10.1016/j.jcat.2013.04.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Wang T, Gao D, Zhuo J, Zhu Z, Papakonstantinou P, Li Y, Li M. Size-Dependent Enhancement of Electrocatalytic Oxygen-Reduction and Hydrogen-Evolution Performance of MoS2Particles. Chemistry 2013; 19:11939-48. [DOI: 10.1002/chem.201301406] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Indexed: 12/12/2022]
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31
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XUE Q, KATO D, KAMATA T, GUO Q, YOU T, NIWA O. Improved Direct Electrochemistry for Proteins Adsorbed on a UV/Ozone-Treated Carbon Nanofiber Electrode. ANAL SCI 2013; 29:611-8. [DOI: 10.2116/analsci.29.611] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Qiang XUE
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Dai KATO
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Tomoyuki KAMATA
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Qiaohui GUO
- The State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
| | - Tianyan YOU
- The State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
| | - Osamu NIWA
- National Institute of Advanced Industrial Science and Technology (AIST)
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32
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Kharissova OV, Kharisov BI, de Casas Ortiz EG. Dispersion of carbon nanotubes in water and non-aqueous solvents. RSC Adv 2013. [DOI: 10.1039/c3ra43852j] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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33
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Bo X, Guo L. Ordered mesoporous boron-doped carbons as metal-free electrocatalysts for the oxygen reduction reaction in alkaline solution. Phys Chem Chem Phys 2013; 15:2459-65. [DOI: 10.1039/c2cp43541a] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Jeon IY, Choi HJ, Jung SM, Seo JM, Kim MJ, Dai L, Baek JB. Large-scale production of edge-selectively functionalized graphene nanoplatelets via ball milling and their use as metal-free electrocatalysts for oxygen reduction reaction. J Am Chem Soc 2012; 135:1386-93. [PMID: 23110522 DOI: 10.1021/ja3091643] [Citation(s) in RCA: 283] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Edge-selectively functionalized graphene nanoplatelets (EFGnPs) with different functional groups were efficiently prepared simply by dry ball milling graphite in the presence of hydrogen, carbon dioxide, sulfur trioxide, or carbon dioxide/sulfur trioxide mixture. Upon exposure to air moisture, the resultant hydrogen- (HGnP), carboxylic acid- (CGnP), sulfonic acid- (SGnP), and carboxylic acid/sulfonic acid- (CSGnP) functionalized GnPs readily dispersed into various polar solvents, including neutral water. The resultant EFGnPs were then used as electrocatalysts for oxygen reduction reaction (ORR) in an alkaline electrolyte. It was found that the edge polar nature of the newly prepared EFGnPs without heteroatom doping into their basal plane played an important role in regulating the ORR efficiency with the electrocatalytic activity in the order of SGnP > CSGnP > CGnP > HGnP > pristine graphite. More importantly, the sulfur-containing SGnP and CSGnP were found to have a superior ORR performance to commercially available platinum-based electrocatalyst.
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Affiliation(s)
- In-Yup Jeon
- Ulsan National Institute of Science and Technology (UNIST), Interdisciplinary School of Green Energy/Low-Dimensional Carbon Materials Center, 100 Banyeon, Ulsan 689-897, South Korea
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