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da Rosa Salles T, Zancanaro LV, da Silva Bruckmann F, Garcia WJ, de Oliveira AH, Baumann L, Rhoden DSB, Muller EI, Martinez DST, Mortari SR, Rhoden CRB. Magnetic graphene derivates for efficient herbicide removal from aqueous solution through adsorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:25437-25453. [PMID: 38472573 DOI: 10.1007/s11356-024-32845-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/06/2024] [Indexed: 03/14/2024]
Abstract
2,4-Dichlorophenoxyacetic acid (2,4-D) is an herbicide and is among the most widely distributed pollutant in the environment and wastewater. Herein is presented a complete comparison of adsorption performance between two different magnetic carbon nanomaterials: graphene oxide (GO) and its reduced form (rGO). Magnetic functionalization was performed employing a coprecipitation method, using only one source of Fe2+, requiring low energy, and potentially allowing the control of the amount of incorporated magnetite. For the first time in literature, a green reduction approach for GO with and without Fe3O4, maintaining the magnetic behavior after the reaction, and an adsorption performance comparison between both carbon nanomaterials are demonstrated. The nanoadsorbents were characterized by FTIR, XRD, Raman, VSM, XPS, and SEM analyses, which demonstrates the successful synthesis of graphene derivate, with different amounts of incorporate magnetite, resulting in distinct magnetization values. The reduction was confirmed by XPS and FTIR techniques. The type of adsorbent reveals that the amount of magnetite on nanomaterial surfaces has significant influence on adsorption capacity and removal efficiency. The procedure demonstrated that the best performance, for magnetic nanocomposites, was obtained by GO∙Fe3O4 1:1 and rGO∙Fe3O4 1:1, presenting values of removal percentage of 70.49 and 91.19%, respectively. The highest adsorption capacity was reached at pH 2.0 for GO∙Fe3O4 1:1 (69.98 mg g-1) and rGO∙Fe3O4 1:1 (89.27 mg g-1), through different interactions: π-π, cation-π, and hydrogen bonds. The adsorption phenomenon exhibited a high dependence on pH, initial concentration of adsorbate, and coexisting ions. Sips and PSO models demonstrate the best adjustment for experimental data, suggesting a heterogeneous surface and different energy sites, respectively. The thermodynamic parameters showed that the process was spontaneous and exothermic. Finally, the nanoadsorbents demonstrated a high efficiency in 2,4-D adsorption even after five adsorption/desorption cycles.
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Affiliation(s)
- Theodoro da Rosa Salles
- Laboratory of Nanostructured Magnetic Materials, LaMMaN, Franciscan University (UFN), Santa Maria, RS, Brazil
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil
| | - Leonardo Vidal Zancanaro
- Laboratory of Nanostructured Magnetic Materials, LaMMaN, Franciscan University (UFN), Santa Maria, RS, Brazil
| | | | - Wagner Jesus Garcia
- Department of Industrial Design, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | | | - Luiza Baumann
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | | | - Edson Irineu Muller
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Diego Stefani Teodoro Martinez
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo, Brazil
| | - Sergio Roberto Mortari
- Postgraduate Program in Nanoscience, Franciscan University (UFN), Santa Maria, RS, Brazil
| | - Cristiano Rodrigo Bohn Rhoden
- Laboratory of Nanostructured Magnetic Materials, LaMMaN, Franciscan University (UFN), Santa Maria, RS, Brazil.
- Postgraduate Program in Nanoscience, Franciscan University (UFN), Santa Maria, RS, Brazil.
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2
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Kazmi SJ, Rehman SU, Nadeem M, Rehman UU, Hussain S, Manzoor S. Effect of carbon allotropes and thickness variation on the EMI shielding properties of PANI/NFO@CNTs and PANI/NFO@RGO ternary composite systems. Phys Chem Chem Phys 2024; 26:10168-10182. [PMID: 38495023 DOI: 10.1039/d4cp00028e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The innovative design of thin, multiphase flexible composite systems with good mechanical properties, low density and improved EMI shielding properties at low filler content has become a key area of research. In this work, we report the low temperature synthesis of three-dimensional ternary composites (PANI/NFO@CNTs and PANI/NFO@RGO) by oxidative chemical polymerization of aniline in the presence of two different binary composites, viz. NFO@CNTs and NFO@RGO. Enhanced impedance matching is achieved by varying the ratio of the carbon allotropes (CNTs and RGO) to the ferrite component. The synthesis of NFO, PANI/NFO@CNTs and PANI/NFO@RGO is validated by XRD and FTIR spectroscopy. Field emission scanning electron microscopy (FE-SEM) confirmed the synthesis of core-shell structures of PANI/NFO@CNTs and PANI/NFO@RGO, where the binary composites (NFO@CNTs and NFO@RGO) serve as a core onto which a tubular PANI layer was coated. Shielding effectiveness of 22.36 dB (99.41% attenuation) is exhibited by the ternary composite PANI/NFO@CNTs (8 : 1), while for PANI/NFO@RGO (20 : 1) a total shielding effectiveness of 31 dB equivalent to 99.92% attenuation was observed at a thickness of 2 mm. The ternary composite PANI/NFO@RGO (20 : 1) 4 mm showed a maximum SET of 43 dB corresponding to 99.996% attenuation of incident EM waves. The enhanced EMI shielding properties of the synthesized ternary composite systems are accredited to good impedance matching, effective dielectric and magnetic loss mechanisms and good conductivity, which facilitate multiple reflections and scattering of incident radiation.
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Affiliation(s)
- Syeda Javaria Kazmi
- Magnetism Laboratory, Department of Physics, COMSATS University, 45550 Islamabad, Pakistan.
| | - Saeed Ur Rehman
- Magnetism Laboratory, Department of Physics, COMSATS University, 45550 Islamabad, Pakistan.
| | - M Nadeem
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH, P.O. Nilore, Islamabad, Pakistan
| | - Ubaid Ur Rehman
- Polymer Composite Group, Physics Division, Directorate of Science, PINSTECH, P.O. Nilore, Islamabad, Pakistan
| | - Shahzad Hussain
- Magnetism Laboratory, Department of Physics, COMSATS University, 45550 Islamabad, Pakistan.
| | - Sadia Manzoor
- Magnetism Laboratory, Department of Physics, COMSATS University, 45550 Islamabad, Pakistan.
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Wang J, Li S, Yang L, Liu B, Xie S, Qi R, Zhan Y, Xia H. Graphene-Based Hybrid Fillers for Rubber Composites. Molecules 2024; 29:1009. [PMID: 38474521 DOI: 10.3390/molecules29051009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 02/09/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Graphene and its derivatives have been confirmed to be among the best fillers for rubber due to their excellent properties, such as high mechanical strength, improved interface interaction, and strain-induced crystallization capabilities. Graphene rubber materials can be widely used in tires, shoes, high-barrier conductive seals, electromagnetic shielding seals, shock absorbers, etc. In order to reduce the graphene loading and endow more desirable functions to rubber materials, graphene-based hybrid fillers are extensively employed, which can effectively enhance the performance of rubber composites. This review briefly summarizes the recent research on rubber composites with graphene-based hybrid fillers consisting of carbon black, silica, carbon nanotubes, metal oxide, and one-dimensional nanowires. The preparation methods, performance improvements, and applications of different graphene-based hybrid fillers/rubber composites have been investigated. This study also focuses on methods that can ensure the effectiveness of graphene hybrid fillers in reinforcing rubber composites. Furthermore, the enhanced mechanism of graphene- and graphene derivative-based hybrid fillers in rubber composites is investigated to provide a foundation for future studies.
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Affiliation(s)
- Jian Wang
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Shijiu Li
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Li Yang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Baohua Liu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Songzhi Xie
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Rui Qi
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yanhu Zhan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
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4
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Amini M, Hosseini H, Dutta S, Wuttke S, Kamkar M, Arjmand M. Surfactant-Mediated Highly Conductive Cellulosic Inks for High-Resolution 3D Printing of Robust and Structured Electromagnetic Interference Shielding Aerogels. ACS APPLIED MATERIALS & INTERFACES 2023; 15:54753-54765. [PMID: 37787508 DOI: 10.1021/acsami.3c10596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Technological fusion of emerging three-dimensional (3D) printing of aerogels with gel processing enables the fabrication of lightweight and functional materials for diverse applications. However, 3D-printed constructs via direct ink writing for fabricating electrically conductive structured biobased aerogels suffer several limitations, including poor electrical conductivity, inferior mechanical strength, and low printing resolution. This work addresses these limitations via molecular engineering of conductive hydrogels. The hydrogel inks, namely, CNC/PEDOT-DBSA, featured a unique formulation containing well-dispersed cellulose nanocrystal decorated by a poly(3,4-ethylene dioxythiophene) (PEDOT) domain combined with dodecylbenzene sulfonic acid (DBSA). The rheological properties were precisely engineered by manipulating the solid content and the intermolecular interactions among the constituents, resulting in 3D-printed structures with excellent resolution. More importantly, the resultant aerogels following freeze-drying exhibited a high electrical conductivity (110 ± 12 S m-1), outstanding mechanical properties (Young's modulus of 6.98 MPa), and fire-resistance properties. These robust aerogels were employed to address pressing global concerns about electromagnetic pollution with a specific shielding effectiveness of 4983.4 dB cm2 g-1. Importantly, it was shown that the shielding mechanism of the 3D printed aerogels could be manipulated by their geometrical features, unraveling the undeniable role of additive manufacturing in materials design.
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Affiliation(s)
- Majed Amini
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1 V 1 V7, Canada
| | - Hadi Hosseini
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1 V 1 V7, Canada
| | - Subhajit Dutta
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48950 Leioa, Spain
| | - Stefan Wuttke
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48950 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Milad Kamkar
- Multiscale Materials Design Center, Department of Chemical Engineering and Waterloo Institute for Nanotechnology, University of Waterloo, Toronto, Ontario N2L 3G1. Canada
| | - Mohammad Arjmand
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1 V 1 V7, Canada
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Sadek R, Sharawi MS, Dubois C, Tantawy H, Chaouki J. Reduced Graphene Oxide/Barium Ferrite Ceramic Nanocomposite Synergism for High EMI Wave Absorption. ACS OMEGA 2023; 8:15099-15113. [PMID: 37151556 PMCID: PMC10157665 DOI: 10.1021/acsomega.2c08168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 03/06/2023] [Indexed: 05/09/2023]
Abstract
The developed nanocomposite exhibits significantly enhanced shielding performance due to the synergistic effect of high dielectric and magnetic loss materials, which modifies the material's impedance and improves its absorption ability. Different weight percentages (0, 1, 5, 10, 15, 20, and 25 wt %) of thermally treated chemically reduced graphene oxide (TCRGO) were combined with two types of magnets, barium hexaferrite (BF) and magnetite (MAG), using a dry powder compaction technique to produce binary ceramic nanocomposite sheets. The shielding performance of a 1 mm thick compressed nanoceramic sheet over the X-band was evaluated using a vector network analyzer. The 25% TCRGO showed high shielding performance for both BF and MAG, while BF had a total shielding efficiency (SET) that exceeded MAG by 130%. The SET of 25 wt % TCRGO/BF was 52 dB, with a 41 dB absorption shielding efficiency (SEA). Additionally, the effect of different levels of incident electromagnetic wave power (0.001-1000 mW) at various thicknesses (1, 2, and 5 mm) was explored. At 1000 mW, the 5 mm TCRGO/BF had an SET of 99 dB, an SEA of 91 dB, and a reflection shielding efficiency (SER) of 8 dB. The use of BF as a hard magnet paired with TCRGO exhibited excellent and stable electromagnetic shielding performance.
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Affiliation(s)
- Ramy Sadek
- Chemical
Engineering Department, Polytechnique Montréal, Montréal, Quebec H3T 1J4, Canada
| | - Mohammad S. Sharawi
- Poly-Grames
Research Center, Electrical Engineering Department, Polytechnique Montréal, Montréal, Quebec H3T 1J4, Canada
| | - Charles Dubois
- Chemical
Engineering Department, Polytechnique Montréal, Montréal, Quebec H3T 1J4, Canada
| | - Hesham Tantawy
- Chemical
Engineering Department, Military Technical
College, Cairo 11766, Egypt
| | - Jamal Chaouki
- Chemical
Engineering Department, Polytechnique Montréal, Montréal, Quebec H3T 1J4, Canada
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6
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Gupta U, Kumar N, Lata A, Singh P, Arun RK. Bio-inspired self-pumping microfluidic device for cleaning of urea using reduced graphene oxide (rGO) modified polymeric nanohybrid membrane. Int J Biol Macromol 2023; 241:124614. [PMID: 37119905 DOI: 10.1016/j.ijbiomac.2023.124614] [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: 01/30/2023] [Revised: 04/17/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
In vitro technology facilitates the replication of in vivo tissues more accurately than conventional cell-based artificial organs, enabling researchers to mimic both the structural and functional characteristics of natural systems. Here, we demonstrate a novel spiral-shaped self-pumping microfluidic device for the cleaning of urea by incorporating reduced graphene oxide (rGO) modified a Polyethersulfone (PES) nanohybrid membrane for efficient filtration capacity. The spiral-shaped microfluidic chip is a two-layer configuration of polymethyl methacrylate (PMMA) integrated with the modified filtration membrane. In essence, the device replicates the main features of the kidney (Glomerulus), i.e., a nano-porous membrane modified with reduced graphene oxide to separate the sample fluid from the upper layer and collect the biomolecule-free fluid through the bottom of the device. We have achieved a cleaning efficiency of 97.94 ± 0.6 % using this spiral shaped microfluidic system. The spiral-shaped microfluidic device integrated with nanohybrid membrane has potential for organ-on-a-chips applications.
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Affiliation(s)
- Upasana Gupta
- Department of Chemical Engineering, Indian Institute of Technology Jammu, India
| | - Natish Kumar
- Department of Chemical Engineering, Indian Institute of Technology Jammu, India
| | - Akash Lata
- Department of Chemical Engineering, Indian Institute of Technology Jammu, India
| | - Preeti Singh
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Ravi Kumar Arun
- Department of Chemical Engineering, Indian Institute of Technology Jammu, India.
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7
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Multilayered Composites with Carbon Nanotubes for Electromagnetic Shielding Application. Polymers (Basel) 2023; 15:polym15041053. [PMID: 36850335 PMCID: PMC9963311 DOI: 10.3390/polym15041053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/20/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
Bulk polylactic acid (PLA)/multiwall carbon nanotube (MWCNT) composites were prepared and investigated in wide frequency ranges (20 Hz-1 MHz and 24-40 GHz). It was determined that the percolation threshold in bulk PLA/MWCNT composites is close to 0.2 vol.% MWCNT. However, the best microwave dielectric properties and absorption were observed in composites with 3.0-5.0 vol.% MWCNT. Therefore, for future investigations, we selected layered (laminate) polymeric structures with gradual changes in MWCNT concentration from 0.2 to 8.0 vol.% MWCNT. Two approaches to laminate structure designs were examined and compared: a five-layer composite and a nine-layer composite that included four pure PLA middle layers. The addition of MWCNT enhanced the elastic modulus by up to 1.4-fold and tensile strength by up to 1.2-fold, with the best performance achieved at 5.0 vol.% loading. High microwave shielding was observed for these layered PLA/MWCNT structures with a gradient change in MWCNT concentration (up to 26 dB in both transmission and absorption coefficients) in the broad frequency range (from 24 to 40 GHz). Obtained structures are highly anisotropic, and the absorption coefficient is 2-5 dB higher in the direction of MWCNT concentration increase; however, the transmission coefficient is the same in both directions. The properties of microwave absorption are mainly unaffected by the additional polymeric layers. The absorption of the layered structure is greater than the absorption of single-layer composites with an optimal MWCNT concentration of the same thickness. The proposed laminate structure design is promising in the field of efficient electromagnetic shielding.
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Selvaraj VK, Subramanian J, Jeyamani E, Azeez A, Keerthivasan R. A study to determine electromagnetic interference‐shielding effectiveness on bio‐based polyurethane foam reinforced with
PVDF
/
MgO
/Ni for emerging applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.53386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Vinoth Kumar Selvaraj
- School of Mechanical Engineering Vellore Institute of Technology Chennai Tamilnadu India
| | - Jeyanthi Subramanian
- School of Mechanical Engineering Vellore Institute of Technology Chennai Tamilnadu India
| | - Elamaran Jeyamani
- Department of Mechanical Engineering Swinburne University of Technology Sarawak Malaysia
| | - Aslam Azeez
- School of Mechanical Engineering Vellore Institute of Technology Chennai Tamilnadu India
| | - Ramesh Keerthivasan
- School of Mechanical Engineering Vellore Institute of Technology Chennai Tamilnadu India
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9
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Tercki D, Orlińska B, Słotwińska D, Sajdak M. Pickering emulsions as an alternative to traditional polymers: trends and applications. REV CHEM ENG 2022. [DOI: 10.1515/revce-2022-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Pickering emulsions have gained increasing interest because of their unique features, including easy preparation and stability. In contrast to classical emulsions, in Pickering emulsions, the stabilisers are solid micro/nanoparticles that accumulate on the surfaces of liquid phases. In addition to their stability, Pickering emulsions are less toxic and responsive to external stimuli, which make them versatile material that can be flexibly designed for specific applications, e.g., catalysis, pharmaceuticals and new materials. The potential toxicity and adverse impact on the environment of classic emulsions is related to the extractable nature of the water emulsifier. The impacts of some emulsifiers are related to not only their chemical natures but also their stabilities; after base or acid hydrolysis, some emulsifiers can be turned into sulphates and fatty alcohols, which are dangerous to aquatic life. In this paper, recent research on Pickering emulsion preparations is reviewed, with a focus on styrene as one of the main emulsion components. Moreover, the effects of the particle type and morphology and the critical parameters of the emulsion production process on emulsion properties and applications are discussed. Furthermore, the current and prospective applications of Pickering emulsion, such as in lithium-ion batteries and new vaccines, are presented.
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Affiliation(s)
- Dariusz Tercki
- Department of Organic Chemical Technology and Petrochemistry , PhD School, Silesian University of Technology , Akademicka 2a, 44-100 Gliwice , Poland
- Synthos S.A. , ul. Chemików 1, 32-600 Oświęcim , Poland
| | - Beata Orlińska
- Department of Organic Chemical Technology and Petrochemistry , Silesian University of Technology , B. Krzywoustego 4, 44-100 Gliwice , Poland
| | | | - Marcin Sajdak
- Department of Air Protection, Silesian University of Technology , S. Konarskiego 22B, 44-100 Gliwice , Poland
- School of Chemical Engineering, University of Birmingham , Edgbaston , Birmingham B15 2TT , UK
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10
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Guo B, Liang J, Chen J, Zhao Y. Highly flexible and ultrathin electromagnetic-interference-shielding film with a sandwich structure based on PTFE@Cu and Ni@PVDF nanocomposite materials. RSC Adv 2022; 12:29688-29696. [PMID: 36321092 PMCID: PMC9575156 DOI: 10.1039/d2ra05439f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022] Open
Abstract
Light and flexible electromagnetic-interference-shielding materials are of great significance to control electromagnetic pollution and protect the human body and other nearby equipment or systems. In this study, a film of polytetrafluoroethylene wrapped with copper (PTFE@Cu) was prepared by depositing Cu using electroless plating on the surface of a microporous PTFE film modified by dopamine. A Ni@PVDF membrane was fabricated by casting a suspension of Ni nanochains in PVDF. The two kinds of films were hot-pressed into an ultrathin and efficient electromagnetic-shielding film with a sandwich structure. PTFE and PVDF provided high flexibility to the composite film, while the metal-wrapped polymer fiber structure gave the film an excellent electromagnetic-shielding efficiency, and the Ni nanochains and laminated hot-pressing process further enhanced the shielding ability of the film. Through these combined effects, the conductivity of the composite film reached 1117.57 S cm−1 while the thickness was only about 80 μm, and the average shielding efficiency in the X-band range was as high as 57.16 dB with absorption accounting for about 67.2% of the total shielding. At the same time, the composite film had high strength and flexibility, and the tensile strength could reach 43.49 MPa. Even after bending 1000 times, the conductivity could still be maintained at 174.55 S cm−1, while the average shielding effectiveness in the X-band range was retained at 44.29 dB. The film has great latent applications in flexible devices and portable wearable intelligent devices. Light and flexible electromagnetic-interference-shielding materials are of great significance to control electromagnetic pollution and protect the human body and other nearby equipment or systems.![]()
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Affiliation(s)
- Bingzhi Guo
- Beijing Institute of TechnologyZhuhai 519088P. R. China
| | - Jianying Liang
- Beijing Institute of TechnologyZhuhai 519088P. R. China,Guangxi UniversityNanning 530004P. R. China
| | | | - Yun Zhao
- Beijing Institute of TechnologyZhuhai 519088P. R. China,School of Chemistry and Chemical Engineering, Beijing Institute of TechnologyBeijing 100081P. R. China
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11
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Bagheri HF, Arvand M, Habibi MF. An ultra-sensitive tailor-made sensor for specific adsorption and separation of rutin based on imprinted cavities on magnetic sensing platform. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Kumar A, Chowdhuri A, Tomar M, Singh M. Boost in the Electromagnetic Shielding Effectiveness of Polystyrene–Polyaniline Composites by Addition of Carbon Nanofibers. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07289-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Oraby H, Tantawy HR, Correa-Duarte MA, Darwish M, Elsaidy A, Naeem I, Senna MH. Tuning Electro-Magnetic Interference Shielding Efficiency of Customized Polyurethane Composite Foams Taking Advantage of rGO/Fe 3O 4 Hybrid Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2805. [PMID: 36014670 PMCID: PMC9415845 DOI: 10.3390/nano12162805] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/30/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Electromagnetic interference (EMI) has been recognized as a new sort of pollution and can be considered as the direct interference of electromagnetic waves among electronic equipment that frequently affects their typical efficiency. As a result, shielding the electronics from this interfering radiation has been addressed as critical issue of great interest. In this study, different hybrid nanocomposites consisting of magnetite nanoparticles (Fe3O4) and reduced graphene oxide (rGO) as (conductive/magnetic) fillers, taking into account different rGO mass ratios, were synthesized and characterized by XRD, Raman spectroscopy, TEM and their magnetic properties were assessed via VSM. The acquired fillers were encapsulated in the polyurethane foam matrix with different loading percentages (wt%) to evaluate their role in EMI shielding. Moreover, their structure, morphology, and thermal stability were investigated by SEM, FTIR, and TGA, respectively. In addition, the impact of filler loading on their final mechanical properties was determined. The obtained results revealed that the Fe3O4@rGO composites displayed superparamagnetic behavior and acceptable electrical conductivity value. The performance assessment of the conducting Fe3O4@rGO/PU composite foams in EMI shielding efficiency (SE) was investigated at the X-band (8-12) GHz, and interestingly, an optimized value of SE -33 dBw was achieved with Fe3O4@rGO at a 80:20 wt% ratio and 35 wt% filler loading in the final effective PU matrix. Thus, this study sheds light on a novel optimization strategy for electromagnetic shielding, taking into account conducting new materials with variable filler loading, composition ratio, and mechanical properties in such a way as to open the door for achieving a remarkable SE.
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Affiliation(s)
- Hussein Oraby
- Department of Chemical Engineering, Military Technical College, Cairo 1111, Egypt
| | - Hesham Ramzy Tantawy
- Department of Chemical Engineering, Military Technical College, Cairo 1111, Egypt
| | | | - Mohammad Darwish
- Department of Radar, Military Technical College, Cairo 4393010, Egypt
| | - Amir Elsaidy
- Department of Chemical Engineering, Military Technical College, Cairo 1111, Egypt
| | - Ibrahim Naeem
- Department of Chemical Engineering, Military Technical College, Cairo 1111, Egypt
| | - Magdy H. Senna
- Radiation Chemistry Department, National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo 11762, Egypt
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14
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Thadathil A, Kavil J, Kovummal GR, Jijil CP, Periyat P. Facile Synthesis of Polyindole/Ni 1-x Zn x Fe 2O 4 ( x = 0, 0.5, 1) Nanocomposites and Their Enhanced Microwave Absorption and Shielding Properties. ACS OMEGA 2022; 7:11473-11490. [PMID: 35415333 PMCID: PMC8992279 DOI: 10.1021/acsomega.2c00824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
The present work reports the fabrication of polyindole (PIN)/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites as efficient electromagnetic wave absorbers by a facile in situ emulsion polymerization method for the first time. The samples were characterized through Fourier transform infrared spectroscopy, UV-vis spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, high-resolution transmission electron microscopy, and vibrating sample magnetometry. The resulting polyindole/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites offer better synergism among the Ni1-x Zn x Fe2O4 nanoparticles and PIN matrix, which significantly improved impedance matching. The best impedance matching of Ni1-x Zn x Fe2O4/polyindole (x = 0, 0.5, 1) nanocomposites was sought out, and the minimum reflection loss of the composites can reach up to -33 dB. The magnetic behavior, complex permittivity, permeability, and microwave absorption properties of polyindole/Ni1-x Zn x Fe2O4 (x = 0, 0.5, 1) nanocomposites have also been studied. The microwave absorbing characteristics of these composites were investigated in the 8-12 GHz range (X band) and explained based on eddy current, natural and exchange resonance, and dielectric relaxation processes. These results provided a new idea to upgrade the performance of conventional microwave-absorbing materials based on polyindole in the future.
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Affiliation(s)
- Anjitha Thadathil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Jithesh Kavil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Govind Raj Kovummal
- Department
of Chemistry, Malabar Christian College, Calicut, Kerala 673001, India
| | - Chamundi P. Jijil
- Department
of Chemistry, University of Calicut, Thenhipalam, Kerala 673635, India
| | - Pradeepan Periyat
- Department
of Environmental Studies, Kannur University, Kannur, Kerala 670567, India
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15
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Dielectric Properties of Hybrid Polyethylene Composites Containing Cobalt Nanoparticles and Carbon Nanotubes. MATERIALS 2022; 15:ma15051876. [PMID: 35269106 PMCID: PMC8912063 DOI: 10.3390/ma15051876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 11/30/2022]
Abstract
Polymer composites with electrically conductive inclusions are intensively developed for microwave shielding applications, where lightweight and elastic coatings are necessary. In this paper, dielectric properties of hybrid polyethylene composites containing cobalt nanoparticles and multi-wall carbon nanotubes (MWCNT) were investigated in the wide frequency range of 20–40 GHz for electromagnetic shielding applications. The percolation threshold in the hybrid system is close to 6.95 wt% MWCNT and 0.56 Co wt%. Cobalt nanoparticles (up to highest investigated concentration 4.8 wt%) had no impact on the percolation threshold, and for the fixed total concentration of fillers, the complex dielectric permittivity is higher for composites with bigger MWCNT concentrations. Moreover, the microwave complex dielectric permittivity of composites with high concentration of fillers is quite high (for composites with 13.4 wt% MWCNT and 1.1 wt% Co ε′ ≈ ε″ ≈ 20 at 30 GHz, it corresponds to microwave absorption 50% of 1 mm thickness plate); therefore, these composites are suitable for electromagnetic shielding applications.
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16
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Iqbal K, Ishaq MA, Ahmad A, Ali MD, Zeeshan T, Tahir W, Aslam A, Amami M, Farhat IB, Ahmed SB, Abdelhak J. Fabrication and characterizations of hybrid materials based on polyaniline, metal oxide, and graphene nano-platelets for supercapacitor electrodes. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109201] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Ali MD, Aslam A, Zeeshan T, Mubaraka R, Bukhari SA, Shoaib M, Amami M, Farhat IB, Ahmed SB, Abdelhak J, Waseem S. Robust effectiveness behavior of synthesized cobalt doped Prussian blue graphene oxide ferrite against EMI shielding. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Wu B, Zhu K, Wen X, Li M, Yang Y, Yang J. Fe
3
O
4
@
PA6
/
MWCNT
composites with multiple gradient segregated structures for electromagnetic shielding with low reflection. J Appl Polym Sci 2022. [DOI: 10.1002/app.52085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Bozhen Wu
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Kaiqi Zhu
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Xinghan Wen
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Minpei Li
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Yuhao Yang
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
| | - Jintao Yang
- College of Materials Science and Engineering Zhejiang University of Technology Hangzhou China
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19
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Li R, Li T, Wan Y, Zhang X, Liu X, Li R, Pu H, Gao T, Wang X, Zhou Q. Efficient decolorization of azo dye wastewater with polyaniline/graphene modified anode in microbial electrochemical systems. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126740. [PMID: 34333409 DOI: 10.1016/j.jhazmat.2021.126740] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/07/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Azo dye pollution has become a worldwide issue, and the current treatment methods can hardly meet the expected emission standards. Microbial electrochemical systems (MESs) show promising applications for decolorization, but their performance critically depends on the microorganisms. Electrode modification is an interesting method of improving decolorization performance. However, the mechanisms of how the modification can affect microbial communities and the decolorization process remain unclear. Here, a modified anode with polyaniline (PANI) and graphene was fabricated via electro-deposition. Consequently, the highest decolorization efficiency was obtained. The Congo red (CR) decolorization rate of the MESs with the PANI/graphene-modified electrode (PG) reached 90% at 54 h. By contrast, the CR decolorization rates of the MESs with the PANI-modified electrode (P) and those of the MESs with the unmodified electrode (C) only reached 68% and 79%, respectively. Results of the microbial community analysis showed abundant Methanobrevibacter arboriphilus in PG (11%), which was 5.5 times that in C (2%) at 18 h. This phenomenon may be related to the rapid decolorization. The upregulated metabolism pathways, including arginine and proline metabolism, purine metabolism, arginine biosynthesis, and riboflavin metabolism, provided more electron shuttles and redox mediators that facilitated the extracellular electron transfer. Therefore, the PG-modified electrode facilitated the decolorization by altering certain metabolic pathways. This study can help to improve the guideline on the potential application of MESs for wastewater treatment.
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Affiliation(s)
- Ruixiang Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Tian Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China.
| | - Yuxuan Wan
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Xiaolin Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Xueyi Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Runtong Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Hangming Pu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Tong Gao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Xin Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Qixing Zhou
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control/College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China.
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20
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Simple and green route for fabrication of a nanostructured of the graphene‐Fe3O4@PANI for the photovoltaic activity. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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21
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Han Y, Yuan J, Zhu Y, Wang Q, Li L, Cao M. Implantation of WSe 2 nanosheets into multi-walled carbon nanotubes for enhanced microwave absorption. J Colloid Interface Sci 2021; 609:746-754. [PMID: 34839924 DOI: 10.1016/j.jcis.2021.11.079] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/13/2021] [Accepted: 11/15/2021] [Indexed: 12/19/2022]
Abstract
Microwave absorption materials can protect humanity from harmful electromagnetic radiation, but it is still a challenge to absorb electromagnetic radiation with different bands simultaneously. Herein, an effective strategy for obtaining WSe2@CNTs nanohybrids is reported. The conductive network and polarization of WSe2@CNTs nanohybrids can be tailored by confinedly implanting WSe2 nanosheets on multi-walled carbon nanotubes. The electromagnetic properties and microwave absorption performance of the nanohybrids are effectively adjusted via changing the hybrid ratio of WSe2 and CNTs. Multi-band microwave absorption is achieved with up to three bands. The reflection loss (RL) of the sample can reach -60.1 dB, and the bandwidth can reach 4.24 GHz (RL ≤ -10 dB). The excellent microwave absorption performance is attributed to the conductance and multiple relaxations, as well as the synergistic effect of the two. This result confirms that WSe2@CNTs nanohybrids are potential candidates for high-efficiency microwave absorbers and provide a valuable pathway for designing high-performance microwave absorption materials in the future.
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Affiliation(s)
- Yuhang Han
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics & Electronic Engineering, Harbin Normal University, Harbin 150025, China
| | - Jie Yuan
- School of Information Engineering, Minzu University of China, Beijing 100081, China
| | - Yuhang Zhu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Qiangqiang Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Lin Li
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics & Electronic Engineering, Harbin Normal University, Harbin 150025, China.
| | - Maosheng Cao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
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22
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Conjugated Polymer/Graphene Oxide Nanocomposites—State-of-the-Art. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5110292] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Graphene oxide is an imperative modified form of graphene. Similar to graphene, graphene oxide has gained vast interest for the myriad of industrial applications. Conjugated polymers or conducting polymers are well known organic materials having conducting backbone. These polymers have semiconducting nature due to π-conjugation along the main chain. Doping and modification have been used to enhance the electrical conductivity of the conjugated polymers. The nanocomposites of the conjugated polymers have been reported with the nanocarbon nanofillers including graphene oxide. This review essentially presents the structure, properties, and advancements in the field of conducting polymer/graphene oxide nanocomposites. The facile synthesis, processability, and physical properties of the polymer/graphene oxide nanocomposites have been discussed. The conjugated polymer/graphene oxide nanocomposites have essential significance for the supercapacitors, solar cells, and anti-corrosion materials. Nevertheless, the further advanced properties and technical applications of the conjugated polymer/graphene oxide nanocomposites need to be explored to overcome the challenges related to the high performance.
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23
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Thadathil A, Ismail YA, Periyat P. Ternary 3D reduced graphene oxide/Ni 0.5Zn 0.5Fe 2O 4/polyindole nanocomposite for supercapacitor electrode application. RSC Adv 2021; 11:35828-35841. [PMID: 35492780 PMCID: PMC9043229 DOI: 10.1039/d1ra04946a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/21/2021] [Indexed: 12/12/2022] Open
Abstract
A facile two-step strategy has been reported for the preparation of a ternary 3D reduced graphene oxide/Ni0.5Zn0.5Fe2O4/polyindole nanocomposite (GNP) and this composite is applied as an electrode material for supercapacitor applications. Remarkably, Ni0.5Zn0.5Fe2O4 nanoparticles (NZF) decorated on reduced graphene oxide (GN2) are achieved by a facile hydrothermal method followed by coating with polyindole (PIN) through an in situ emulsion polymerization process. The structure, porosity, morphology, and thermal stability of the resulting ternary GNP hybrid material were characterized via X-ray diffraction (XRD), Raman spectroscopy, Brunauer–Emmett–Teller (BET) surface area measurements, transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). This combination of hybrid material has a favorable mesoporous structure that enables high exposure of active sites for fast electron transport for supercapacitor applications. We demonstrate here that the ternary GNP hybrid electrode material is capable of delivering a favorable specific capacitance of ∼320 F g−1 at 0.3 A g−1 within the potential range from −0.1 to 1 V, with desirable rate stability and excellent cycling stability in the three-electrode system. Furthermore, an asymmetric supercapacitor (ASC) of a two-electrode configuration was fabricated using 3D RGO and GNP as the negative and positive electrodes, respectively. Such a device manifests a favourable Csp of 48.9 F g−1 at 0.5 A g−1 and retains stability of 84% even after 2000 cycles. This ASC device exhibits a significant energy density of 16.38 W h kg−1 at a power density of 1784 W kg−1. The synergistic effects of pseudo and double layer capacitive contributions from PIN and GN2 make this ternary GNP hybrid electrode material of great promise in supercapacitor applications. A facile two-step strategy has been reported for the preparation of a ternary 3D reduced graphene oxide/Ni0.5Zn0.5Fe2O4/polyindole nanocomposite (GNP) and this composite is applied as an electrode material for supercapacitor applications.![]()
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Affiliation(s)
| | - Yahya A Ismail
- Department of Chemistry, University of Calicut Kerala India 673635
| | - Pradeepan Periyat
- Department of Chemistry, University of Calicut Kerala India 673635 .,Department of Environmental Studies, Kannur University Kerala India 670567
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24
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Constructing a Segregated Magnetic Graphene Network in Rubber Composites for Integrating Electromagnetic Interference Shielding Stability and Multi-Sensing Performance. Polymers (Basel) 2021; 13:polym13193277. [PMID: 34641094 PMCID: PMC8512318 DOI: 10.3390/polym13193277] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 02/06/2023] Open
Abstract
A flexible, wearable electronic device composed of magnetic iron oxide (Fe3O4)/reduced graphene oxide/natural rubber (MGNR) composites with a segregated network was prepared by electrostatic self-assembly, latex mixing, and in situ reduction. The segregated network offers the composites higher electrical conductivity and more reliable sensing properties. Moreover, the addi-tion of Fe3O4 provides the composites with better electromagnetic interference shielding effectiveness (EMI SE). The EMI shielding property of MGNR composites is more stable under tensile deformation and long-term cycling conditions and has a higher sensitivity to stretch strain compared with the same structure made from reduced graphene oxide/natural rubber (GNR) composites. The EMI SE value of MGNR composites reduces by no more than 2.9% under different tensile permanent deformation, cyclic stretching, and cyclic bending conditions, while that of GNR composites reduces by approximately 16% in the worst case. Additionally, the MGNR composites have a better sensing performance and can maintain stable signals, even in the case of cyclic stretching with a very small strain (0.05%). Furthermore, they can steadily monitor the changes in resistance signals in various human motions such as finger bending, wrist bending, speaking, smiling, and blinking, indicating that the MGNR composites can be used in future wearable electronic flexibility devices.
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25
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Anand S, Pauline S. Effective lightweight, flexible and ultrathin PVDF/rGO/Ba 2Co 2Fe 12O 22composite films for electromagnetic interference shielding applications. NANOTECHNOLOGY 2021; 32:475707. [PMID: 33691294 DOI: 10.1088/1361-6528/abed75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
In this study, we developed a simple and cost-effective solvent film casting method to fabricate ultrathin, flexible and lightweight polyvinylidenefluoride (PVDF)-based composites that provide high electromagnetic interference (EMI) shielding performance. Y-type barium hexaferrite with general formula Ba2Co2Fe12O22was first synthesized by the sol-gel autocombustion method and then reduced graphene oxide (rGO) was prepared by modified Hummer's method. The crystal structure, morphology, elemental surface analysis and magnetic properties of the samples were systematically investigated using x-ray diffraction spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, high-resolution scanning electron microscopy, energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy and vibrating sample magnetometry. Then, the complex permittivity, complex permeability and EMI shielding properties of the flexible PVDF/rGO/Ba2Co2Fe12O22composite films with two different amounts of Ba2Co2Fe12O22NP content and a fixed amount of rGO content were investigated using a vector network analyzer. The structural characterizations of the resultant composite films showed the formation of an electroactiveβ-phase of PVDF with addition of Ba2Co2Fe12O22nanoparticles and rGO content. The enhancement of theβ-phase in the PVDF/rGO/Ba2Co2Fe12O22nanocomposites was explained from a physicochemical viewpoint. Furthermore, the electrically conductive and magnetic properties of PVDF composite films incorporating rGO and Ba2Co2Fe12O22NPs exhibited a high EMI shielding effectiveness of 25.63 dB, with an absorption-dominated shielding feature in the 8-12 GHz region. The enhanced absorption was attributed to the electrostatic interaction induced by theβ-phase fraction in the PVDF matrix, and subsequently from multiple reflections and magnetic loss originating from the synergetic effect of rGO and Ba2Co2Fe12O22NPs. This study introduces a low-cost and scalable method for the design of novel, lightweight, flexible and efficient EMI shielding composite films with promising prospects for application in the construction, electronics and aerospace fields.
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Affiliation(s)
- S Anand
- Department of Physics, Loyola College (Autonomous), University of Madras, Chennai-600034, India
| | - S Pauline
- Department of Physics, Loyola College (Autonomous), University of Madras, Chennai-600034, India
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26
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Rezaei A, Rezaei MR, Sayadi MH. Enhanced 3,5-dimethylphenol photodegradation via adsorption-photocatalysis synergy using FSTRG nanohybrid catalyst. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116546] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Wang S, Ren H, Lian W, Zhang X, Liu Z, Liu Y, Zhang T, Kong LB, Bai H. Dispersed spherical shell-shaped palygorskite/carbon/polyaniline composites with advanced microwave absorption performances. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.04.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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28
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Manna R, Ghosh K, Srivastava SK. Functionalized Graphene/Nickel/Polyaniline Ternary Nanocomposites: Fabrication and Application as Electromagnetic Wave Absorbers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7430-7441. [PMID: 34115512 DOI: 10.1021/acs.langmuir.1c00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The evolution of high electromagnetic absorption materials is essential in the fast growing electronic industry in overcoming electromagnetic pollution. In view of this, a series of Ni nanoparticle-decorated functionalized graphene sheets (FG/Ni) are synthesized by a solvothermal method using different ratios of FG/Ni precursors. Subsequently, FG/Ni is subjected to in situ polymerization of aniline to form FG/Ni/PANI ternary composites and characterized. The total electromagnetic interference shielding efficiency (SET) measurements on FG/Ni/PANI with an optimized FG/Ni ratio (50 mg:600 mg NiCl2·6H2O) exhibit enhanced performance, i.e., ∼47-65 dB (2-3.8 GHz) and ∼65-45 dB (3.8-8 GHz), following absorption as the dominant mechanism due to the matching of dielectric loss and magnetic loss. It is anticipated that such excellent performance of robust FG/Ni/PANI ternary composites at a very low thickness (0.5 mm) has great potential in the application of microwave-absorbing materials.
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Affiliation(s)
- Rakesh Manna
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Kalyan Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
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29
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Manna R, Srivastava SK. Reduced Graphene Oxide/Fe 3O 4/Polyaniline Ternary Composites as a Superior Microwave Absorber in the Shielding of Electromagnetic Pollution. ACS OMEGA 2021; 6:9164-9175. [PMID: 33842785 PMCID: PMC8028133 DOI: 10.1021/acsomega.1c00382] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/08/2021] [Indexed: 05/11/2023]
Abstract
The present work is focused on fabrication of reduced graphene oxide/iron(II/III) oxide/polyaniline (RGO/Fe3O4/PANI) ternary composite by a hydrothermal method, its characterization, and application in the development of a high microwave absorbing shielding material. The RGO/Fe3O4/PANI composite showed dramatic enhancement of dielectric loss and magnetic loss compared to Fe3O4/PANI and RGO/Fe3O4 binary composites. This is ascribed to the embedment of more heterostructure phases. As a result, RGO/Fe3O4/PANI showed remarkably high SET (∼28 dB) through the absorption dominant mechanism. Our findings also showed maximum R L of Fe3O4/PANI, RGO/Fe3O4, and RGO/Fe3O4/PANI in the range of 2-8 GHz corresponding to -25 to -35, -40 to -46, and approximately -64 dB, respectively. This is in all probability due to the good impedance matching between permittivity/permeability and dielectric/magnetic losses.
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30
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Guan QF, Han ZM, Yang KP, Yang HB, Ling ZC, Yin CH, Yu SH. Sustainable Double-Network Structural Materials for Electromagnetic Shielding. NANO LETTERS 2021; 21:2532-2537. [PMID: 33683886 DOI: 10.1021/acs.nanolett.0c05081] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Electromagnetic interference (EMI) shielding materials with excellent EMI shielding efficiency (SE), lightweight property, and superb mechanical performance are vitally important for modern society, but it is still a challenge to realize these performances simultaneously on one material. Here, we report a sustainable bioinspired double-network structural material with excellent specific strength (146 MPa g-1 cm3) and remarkable EMI SE (100 dB) from cellulose nanofiber (CNF) and carbon nanotubes (CNTs), which demonstrates remarkable and outstanding performance to both typical metal materials and reported polymer composites. In particular, the bioinspired double-network structure design simultaneously achieves an extremely high electrical conductivity and mechanical strength, which makes it a lightweight, high shielding efficiency, and sustainable structural material for real-life electromagnetic wave shielding applications.
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Affiliation(s)
- Qing-Fang Guan
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Zi-Meng Han
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Kun-Peng Yang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Huai-Bin Yang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Zhang-Chi Ling
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Chong-Han Yin
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, CAS Center for Excellence in Nanoscience, Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, University of Science and Technology of China, Hefei 230026, China
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31
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Macherla N, Singh K, Santosh M, Kumari K, Lekkala RGR. Heat assisted facile synthesis of nanostructured polyaniline/reduced crumbled graphene oxide as a high-performance flexible electrode material for supercapacitors. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125982] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Liu B, Zhang X, Tian D, Li Q, Zhong M, Chen S, Hu C, Ji H. In Situ Growth of Oriented Polyaniline Nanorod Arrays on the Graphite Flake for High-Performance Supercapacitors. ACS OMEGA 2020; 5:32395-32402. [PMID: 33376876 PMCID: PMC7758985 DOI: 10.1021/acsomega.0c04212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/02/2020] [Indexed: 06/12/2023]
Abstract
Polyaniline with oriented nanorod arrays could provide high surface area and relaxed nanostructure to optimize ion diffusion paths, thus enhancing the performance of the device. In this paper, we designed an all-solid symmetrical supercapacitor with good performance based on polyaniline nanorod arrays in situ-grown on a graphite flake free-standing substrate. The specific capacitance, cycle stability, and energy density of the prepared supercapacitor device were 135 F/g, 75.4% retention after 1500 cycles, and the energy density is 18.75 W h/kg at a power density of 500 W/kg. The good performance of the supercapacitor device was obviously related to the oriented nanorod arrays of polyaniline/graphite flakes. In order to find the application of the prepared supercapacitor device, the tandem device consisting of three single supercapacitor devices connected in series had been used to drive small electronic equipment. The red light-emitting diode and chronograph could be easily driven by the 3-series supercapacitor devices. These results indicated that the prepared supercapacitor device based on the polyaniline/graphite flake electrode had potential applications in energy storage devices.
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Affiliation(s)
- Ben Liu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Xingying Zhang
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Du Tian
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Qi Li
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Min Zhong
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Shaoyun Chen
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Chenglong Hu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Hongbing Ji
- Fine
Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China
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33
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Shayesteh Zeraati A, Mende Anjaneyalu A, Pawar SP, Abouelmagd A, Sundararaj U. Effect of secondary filler properties and geometry on the electrical, dielectric, and electromagnetic interference shielding properties of carbon nanotubes/polyvinylidene fluoride nanocomposites. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25591] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ali Shayesteh Zeraati
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Canada
| | | | | | - Ahmed Abouelmagd
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Canada
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34
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Ray B, Parmar S, Date K, Datar S. Optically transparent polymer composites: A study on the influence of filler/dopant on electromagnetic interference shielding mechanism. J Appl Polym Sci 2020. [DOI: 10.1002/app.50255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bishakha Ray
- Department of Applied Physics Defence Institute of Advanced Technology (Deemed University) Pune India
| | - Saurabh Parmar
- Department of Applied Physics Defence Institute of Advanced Technology (Deemed University) Pune India
| | - Kalyani Date
- Department of Applied Physics Defence Institute of Advanced Technology (Deemed University) Pune India
| | - Suwarna Datar
- Department of Applied Physics Defence Institute of Advanced Technology (Deemed University) Pune India
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35
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Bakeshlou Z, Nikfarjam N. Thermoregulating Papers Containing Fabricated Microencapsulated Phase Change Materials through Pickering Emulsion Templating. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03194] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zeynab Bakeshlou
- Polymer Division, Department of Chemistry, Institute for Advanced Studies in Basic Sciences, Zanjan 4513766731, Iran
| | - Nasser Nikfarjam
- Polymer Division, Department of Chemistry, Institute for Advanced Studies in Basic Sciences, Zanjan 4513766731, Iran
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36
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Chen X, Zhang X, Zhuang L, Zhang W, Zhang N, Liu H, Zhan T, Zhang X, She X, Yang D. Multiple Vacancies on (111) Facets of Single-Crystal NiFe 2 O 4 Spinel Boost Electrocatalytic Oxygen Evolution Reaction. Chem Asian J 2020; 15:3995-3999. [PMID: 32497378 DOI: 10.1002/asia.202000468] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/01/2020] [Indexed: 12/31/2022]
Abstract
Oxygen evolution reaction (OER) as the rate-determining reaction of water splitting has been attracting enormous attention. At present, only some noble-metal oxide materials (IrO2 and RuO2 ) have been reported as efficient OER electrocatalysts for OER. However, the high cost and scarcity of these noble-metal oxide materials greatly hamper their large-scale practical application. Herein, we synthesize 100% (111) faceted NiFe2 O4 single crystals with multiple vacancies (cation vacancies and O vacancies). The (111) facets can supply enough platform to break chemical bonds and enhance electrocatalytic activity, due to its high density of atomic steps and kink atoms. Compared to NiFe2 O4 (without vacancies), the as-synthesized NiFe2 O4 -Ar (with vacancies) exhibits a dramatically improved OER activity. The NiFe2 O4 -Ar-30 shows the lowest onset potential (1.45 V vs RHE) and the best electrocatalytic OER activity with the lowest overpotential of 234 mV at 50 mA cm-2 . Furthermore, based on the theoretical calculations that the introduction of multiple vacancies can effectively modulate the electronic structure of active centers to accelerate charge transfer and reaction intermediates adsorption, which can reduce the reaction energy barrier and enhance the activity of electrochemical OER.
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Affiliation(s)
- Xiaokang Chen
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaohui Zhang
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
| | - Linzhou Zhuang
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Wei Zhang
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
| | - Naichi Zhang
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
| | - Hongwei Liu
- Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Tianrong Zhan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science (Ministry of Education), Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Xiaoli Zhang
- State Centre for International Cooperation on Designer Low-Carbon & Environmental Materials, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xilin She
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
| | - Dongjiang Yang
- School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Materials, Qingdao University, Qingdao, 266071, P. R. China
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37
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Superior Microwave Absorption Properties Derived from the Unique 3D Porous Heterogeneous Structure of a CoS@Fe 3O 4@rGO Aerogel. MATERIALS 2020; 13:ma13204527. [PMID: 33065999 PMCID: PMC7601796 DOI: 10.3390/ma13204527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/05/2020] [Accepted: 10/07/2020] [Indexed: 12/15/2022]
Abstract
A novel CoS@Fe3O4@rGO aerogel with a unique 3D porous heterostructure was prepared via the solvothermal method, in which cobalt sulfide (CoS) microspheres embedded with Fe3O4 nanoparticles were randomly scattered on reduced graphene oxide (rGO) flakes. The introduction of magnetic Fe3O4 nanoparticles and rGO regulated the impedance matching, and the excellent electromagnetic wave (EMW) absorption capability of the CoS@Fe3O4@rGO aerogel could be attributed to optimal dielectric loss and abundant conductive networks. The results demonstrated that the minimum reflection loss (RL) value of CoS@Fe3O4@rGO aerogel was -60.65 dB at a 2.5 mm coating thickness with an ultra-wide bandwidth of 6.36 GHz (10.24-16.6 GHz), as the filler loading was only 6 wt%. Such a lightweight CoS@Fe3O4@rGO aerogel with an outstanding absorbing intensity and an ultra-wide effective absorption bandwidth could become a potential EMW absorber.
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38
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Bao S, Tang W, Song Z, Jiang Q, Jiang Z, Xie Z. Synthesis of sandwich-like Co 15Fe 85@C/RGO multicomponent composites with tunable electromagnetic parameters and microwave absorption performance. NANOSCALE 2020; 12:18790-18799. [PMID: 32970071 DOI: 10.1039/d0nr04615a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Magnetic particle/carbon hybrid structures are promising candidates for high performance microwave absorbing materials with light weight and strong absorption. However, it remains a great challenge to balance the permittivity and permeability to realize impedance matching and further improve their absorption bandwidth. Herein, an effective strategy is designed to fabricate sandwich-like Co15Fe85@C/RGO composites. By introducing RGO sheets in the hybrid structures, the electromagnetic parameters, impedance matching and microwave absorption properties of the final materials can be well controlled. The optimized Co15Fe85@C/RGO composite shows an excellent microwave absorption performance, the strongest reflection loss (RL) of the sample is up to -33.38 dB at 10.72 GHz with a matching thickness of 2.5 mm, and the effective bandwidth (RL < -10 dB) can reach 9.2 GHz (8.64-17.84 GHz). With a single thickness, such a wide absorption band is rarely reported. Their excellent performance can be ascribed to the synergetic effect of the chemical composition and unique sandwich-like structures, which will improve impendence matching and strong microwave attenuation constants of the composites. Our results provide a facile strategy for tuning the electromagnetic parameters and microwave absorption properties of magnetic metal/carbon hybrid structures.
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Affiliation(s)
- Susu Bao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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39
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Prasad J, Singh AK, Yadav AN, Kumar A, Tomar M, Srivastava A, Kumar P, Gupta V, Singh K. Molybdenum Disulfide-Wrapped Carbon Nanotube-Reduced Graphene Oxide (CNT/MoS 2-rGO) Nanohybrids for Excellent and Fast Removal of Electromagnetic Interference Pollution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40828-40837. [PMID: 32786247 DOI: 10.1021/acsami.0c06219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electromagnetic interference (EMI) pollution has now become a subject of great concern with the rapid development of delicate electronic equipment in commercial, civil, and military operations. There has been a surge in pursuit of light-weight, adaptable, effective, and efficient EMI screening materials in recent years. The present article addresses a simple and sensitive approach to synthesize a core/shell carbon nanotube/MoS2 heterostructure supported on reduced graphene oxide (CNT/MoS2-rGO nanohybrid) as an efficient electromagnetic shielding material. The structural and morphological characteristics were accessed through X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy, augmenting successful formation of the CNT/MoS2-rGO nanohybrid. The shielding performance of the as-synthesized samples has been accessed in a wide frequency range of 8-12 GHz. A CNT/MoS2-rGO nanohybrid demonstrates a better EMI shielding performance in comparison to MoS2 nanosheets and MoS2-rGO nanohybrid individually. The CNT/MoS2-rGO nanohybrid having a thickness ∼1 mm shows excellent total shielding effectiveness (SET) as high as 40 dB, whereas MoS2 and MoS2-rGO hybrid lags far, with the average value of SET as 7 and 28 dB, respectively. It also demonstrates that the nanohybrid CNT/MoS2-rGO shields the EM radiation by means of absorption through several functional defects and multiple interfaces present in the heterostructure. Herein, we envision that our results provide a simple and innovative approach to synthesize the light-weight CNT/MoS2-rGO nanohybrid having flexibility and high shielding efficiency and widen its practical applications in stealth technology.
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Affiliation(s)
- Jagdees Prasad
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ashwani Kumar Singh
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Amar Nath Yadav
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ajit Kumar
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Monika Tomar
- Department of Physics and Astrophysics, University of Delhi, New Delhi 110007, India
| | - Amit Srivastava
- Department of Physics, T.D.P.G. College, V.B.S. Purvanchal University, Uttar Pradesh 222002, India
| | - Pramod Kumar
- Sri Aurobindo College, University of Delhi, New Delhi 110017, India
| | - Vinay Gupta
- Department of Physics and Astrophysics, University of Delhi, New Delhi 110007, India
| | - Kedar Singh
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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40
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Iqbal A, Shahzad F, Hantanasirisakul K, Kim MK, Kwon J, Hong J, Kim H, Kim D, Gogotsi Y, Koo CM. Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti 3CNT x (MXene). Science 2020; 369:446-450. [PMID: 32703878 DOI: 10.1126/science.aba7977] [Citation(s) in RCA: 286] [Impact Index Per Article: 71.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 06/05/2020] [Indexed: 01/06/2023]
Abstract
Lightweight, ultrathin, and flexible electromagnetic interference (EMI) shielding materials are needed to protect electronic circuits and portable telecommunication devices and to eliminate cross-talk between devices and device components. Here, we show that a two-dimensional (2D) transition metal carbonitride, Ti3CNT x MXene, with a moderate electrical conductivity, provides a higher shielding effectiveness compared with more conductive Ti3C2T x or metal foils of the same thickness. This exceptional shielding performance of Ti3CNT x was achieved by thermal annealing and is attributed to an anomalously high absorption of electromagnetic waves in its layered, metamaterial-like structure. These results provide guidance for designing advanced EMI shielding materials but also highlight the need for exploring fundamental mechanisms behind interaction of electromagnetic waves with 2D materials.
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Affiliation(s)
- Aamir Iqbal
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Division of Nano & Information Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea.,Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA
| | - Faisal Shahzad
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Kanit Hantanasirisakul
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA
| | - Myung-Ki Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Jisung Kwon
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Junpyo Hong
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Hyerim Kim
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Daesin Kim
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Yury Gogotsi
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA.
| | - Chong Min Koo
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea. .,Division of Nano & Information Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
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41
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Taghizadeh A, Taghizadeh M, Jouyandeh M, Yazdi MK, Zarrintaj P, Saeb MR, Lima EC, Gupta VK. Conductive polymers in water treatment: A review. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113447] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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42
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Jaiswal R, Agarwal K, Kumar R, Kumar R, Mukhopadhyay K, Prasad NE. EMI and microwave absorbing efficiency of polyaniline-functionalized reduced graphene oxide/γ-Fe 2O 3/epoxy nanocomposite. SOFT MATTER 2020; 16:6643-6653. [PMID: 32618326 DOI: 10.1039/d0sm00266f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polyaniline-decorated reduced graphene oxide/ferrite nanofiller (RGPF) prepared by the solution mixing method in three different ratios (1 : 3, 1 : 1 and 3 : 1) of polyaniline-decorated reduced graphene oxide and ferrite have been studied for microwave absorption properties in defence application. The polyaniline-decorated reduced graphene oxide/ferrite and neat ferrite nano-fillers have been used for the preparation of an epoxy nanocomposite (RGPFE) of 60 wt%. The distribution of the RGPF nanofiller in the epoxy matrix was analyzed by field emission scanning electron microscopy. Further, thermal gravimetric analyses revealed the excellent thermal stability of the nanocomposites. A vibrating sample magnetometer was employed to find out the magnetic behavior of the prepared nanocomposites. The complex permittivity and permeability were investigated to evaluate the principal properties in the frequency range from 2 to 18 GHz. These results show that an epoxy nanocomposite with 60 wt% RGPF filler in the ratio of 3 : 1 has maximum dielectric loss. Finally, these electromagnetic data were used to calculate the reflection loss of the epoxy nanocomposites, and showed good agreement between the calculated and measured data of these nanocomposites. The minimum reflection loss was observed as -10.26 dB in the X band with a thickness of 3.0 mm, and the bandwidth was 8.47 GHz for RL ≤-10 dB. On the basis of the above observations, these nanocomposites could be a good candidate for electromagnetic interference shielding (EMI) and microwave absorption applications.
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Affiliation(s)
- Rimpa Jaiswal
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
| | - Kavita Agarwal
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
| | - Rakesh Kumar
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
| | - Ritush Kumar
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
| | - Kingsuk Mukhopadhyay
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
| | - N Eswara Prasad
- Defence Materials and Stores Research and Development Establishment, Kanpur 208 013, India.
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43
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Yoo J, Kim HS, Park SY, Kwon S, Lee J, Koo J, Seo YS. Instantaneous integration of magnetite nanoparticles on graphene oxide assisted by ultrasound for efficient heavy metal ion retrieval. ULTRASONICS SONOCHEMISTRY 2020; 64:104962. [PMID: 32006933 DOI: 10.1016/j.ultsonch.2020.104962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 11/12/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
We fabricated a magnetite nanoparticle-graphene oxide (GO) hybrid via a non-chemical and one-step process assisted by ultrasound in an aqueous solution where the nanoparticle attached to the hydrophobic region on graphite oxide (multi-layered GO) which, at the same time, was exfoliated. Unlike chemical methods such as precipitation, oxygen-containing functional groups on GO have not been consumed or reduced during the hybridization, leading that this hybrid exhibited good water solubility and high adsorption capacity for heavy metal ions such as Pb(II) and Au(III). After the adsorption, the hybrid was instantly collected using a magnet. This method can be useful for hybridizing various nanoparticles with GO.
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Affiliation(s)
- Jeseung Yoo
- Department of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University, Seoul 05006, Republic of Korea
| | - Hyo-Sun Kim
- Department of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University, Seoul 05006, Republic of Korea
| | - Sang-Yul Park
- Department of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University, Seoul 05006, Republic of Korea
| | - Suyong Kwon
- Division of Physical Metrology, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Joohyun Lee
- Division of Physical Metrology, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Jaseung Koo
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Young-Soo Seo
- Department of Nanotechnology and Advanced Materials Engineering, Sejong Polymer Research Center, Sejong University, Seoul 05006, Republic of Korea.
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44
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Hong SY, Kim YC, Wang M, Nam JD, Suhr J. Anisotropic electromagnetic interference shielding properties of polymer-based composites with magnetically-responsive aligned Fe3O4 decorated reduced graphene oxide. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109595] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Shayesteh Zeraati A, Sundararaj U. Carbon nanotube/ZnO nanowire/polyvinylidene fluoride hybrid nanocomposites for enhanced electromagnetic interference shielding. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23717] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ali Shayesteh Zeraati
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Alberta Canada
| | - Uttandaraman Sundararaj
- Department of Chemical and Petroleum Engineering University of Calgary Calgary Alberta Canada
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46
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Zhang Y, Cheng W, Tian W, Lu J, Song L, Liew KM, Wang B, Hu Y. Nacre-Inspired Tunable Electromagnetic Interference Shielding Sandwich Films with Superior Mechanical and Fire-Resistant Protective Performance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6371-6382. [PMID: 31927938 DOI: 10.1021/acsami.9b18750] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
With the rapidly increasing development of portable device hardware and flexible electronics, ultrathin electromagnetic interference (EMI) shielding films with a combination of high flexibility and excellent mechanical properties are noticeably required. In addition to minimizing the electromagnetic wave pollution problem, the fire hazards caused by accidental electrical leakage or aging are also a cause of extensive concern. Inspired by nacre and sandwich structure, herein, we fabricated for the first time an electrical insulating sandwich-structured film based on Ca ion cross-linked sodium alginate (SA)-montmorillonite (MMT) and Ti3C2Tx MXene through a step-by-step vacuum-assisted filtration process. This novel design strategy not only maintains the inner EMI shielding network but also can act as an excellent fire-resistant barrier to protect the electronic device in case of accidental fire. Compared with the pure Ti3C2Tx layer, such kind of sandwich film can effectively maintain the EMI shielding performance (50.01 dB), dramatically enhance the mechanical properties (84.4 MPa), and exhibit excellent fire-resistant performance. Especially, compared with the film composed of mixture, the EMI shielding effectiveness value is only 55% that of sandwich films. Besides, it functions well under long-term heat aging test at 80 °C. Therefore, this unique design provides a novel EMI material strategy to facilitate its future applications in flexible electronics.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
- Department of Architecture and Civil Engineering , City University of Hong Kong , Tat Chee Avenue , Kowloon 999077 , Hong Kong
| | - Wenhua Cheng
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
| | - Wenxiang Tian
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
| | - Jingyi Lu
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
| | - Lei Song
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
| | - Kim Meow Liew
- Department of Architecture and Civil Engineering , City University of Hong Kong , Tat Chee Avenue , Kowloon 999077 , Hong Kong
| | - Bibo Wang
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
| | - Yuan Hu
- State Key Laboratory of Fire Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , People's Republic of China
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47
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Study on Direct Synthesis of Energy Efficient Multifunctional Polyaniline-Graphene Oxide Nanocomposite and Its Application in Aqueous Symmetric Supercapacitor Devices. NANOMATERIALS 2020; 10:nano10010118. [PMID: 31936220 PMCID: PMC7022722 DOI: 10.3390/nano10010118] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 12/22/2022]
Abstract
The synthesis of promising nanocomposite materials can always be tricky and depends a lot on the method of synthesis itself. Developing such synthesis routes, which are not only simple but also can effectively catch up the synergy of the compositing material, is definitely a worthy contribution towards nanomaterial science. Carbon-based materials, such as graphene oxide, and conjugative polymers, such as conductive polyaniline, are considered materials of the 21st century. This study involves a simple one pot synthesis route for obtaining a nanocomposite of polyaniline and graphene oxide with synergistic effects. The study was carried out in a systematic way by gradually changing the composition of the ingredients in the reaction bath until the formation of nanocomposite took place at some particular reaction parameters. These nanocomposites were then utilized for the fabrication of electrodes for aqueous symmetric supercapacitor devices utilizing gold or copper as current collectors. The device manifested a good capacitance value of 264 F/g at 1 A/g, magnificent rate performance, and capacitance retention of 84.09% at a high current density (10 A/g) when gold sheet electrodes were used as the current collectors. It also showed a capacitance retention of 79.83% and columbic efficiency of 99.83% after 2000 cycles.
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48
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Facile fabrication of self-assembled lamellar PANI-GO-Fe3O4 hybrid nanocomposites with enhanced adsorption capacities and easy recyclicity towards ionic dyes. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124147] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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49
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Feng Z, Lian D, Wu X, Liu Y, Jia W, Yuan X. The synergy of N-doped and SPR-promoted photocatalytic removal of NO with graphene/Bi nanocomposites. RSC Adv 2020; 10:2734-2739. [PMID: 35496079 PMCID: PMC9048486 DOI: 10.1039/c9ra10001f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 01/08/2020] [Indexed: 11/21/2022] Open
Abstract
Nitrogen-doped graphene/bismuth (NG/Bi) nanocomposites with different graphene contents were successfully assembled using a one-pot method. Detailed characterization of the as-synthesized samples, including powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS), photoluminescence spectra (PL) and photoelectrochemical measurements was conducted. The results showed that nitrogen elements were introduced into the skeleton of graphene and Bi nanoparticles were irregularly distributed on the N-doped graphene nanosheets. The NG/Bi composites performed better photocatalytic NO removal activity than their counterparts under UV light illumination. The removal ratio of NO over 2%-NG/Bi was 49.5%, and the recycling activity after 5 runs was not significantly weakened. The enhanced photocatalytic performance was due to the synergistic effect of N-graphene, which not only elevated the absorption of light, but also accelerated the transfer of hot electrons generated by the SPR effect of Bi. Nitrogen-doped graphene/bismuth (NG/Bi) nanocomposites with different graphene contents were successfully assembled using a one-pot method.![]()
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Affiliation(s)
- Zijuan Feng
- China-Spain Collaborative Research Center for Advanced Materials
- Chongqing Jiaotong University
- Chongqing 400074
- China
- College of Materials Science and Engineering
| | - Deru Lian
- College of Materials Science and Engineering
- Chongqing Jiaotong University
- Chongqing 400074
- China
| | - Xue Wu
- China-Spain Collaborative Research Center for Advanced Materials
- Chongqing Jiaotong University
- Chongqing 400074
- China
- College of Materials Science and Engineering
| | - Yi Liu
- College of Materials Science and Engineering
- Chongqing Jiaotong University
- Chongqing 400074
- China
| | - Wen Jia
- China-Spain Collaborative Research Center for Advanced Materials
- Chongqing Jiaotong University
- Chongqing 400074
- China
- College of Materials Science and Engineering
| | - Xiaoya Yuan
- China-Spain Collaborative Research Center for Advanced Materials
- Chongqing Jiaotong University
- Chongqing 400074
- China
- College of Materials Science and Engineering
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50
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Hu J, Shen Y, Xu L, Liu Y. Facile preparation of flower-like MnO2/reduced graphene oxide (RGO) nanocomposite and investigation of its microwave absorption performance. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136953] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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