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Paul B, Manwar N, Bhanja P, Sellaiyan S, Sharma SK, Khatun R, Jain S, Bal R. Morphology controlled synthesis of 2D heterostructure Ag/WO3 nanocomposites for enhanced photoelectrochemical CO2 reduction performance. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101284] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang HJ, Sellaiyan S, Sako K, Uedono A, Taniguchi Y, Hayashi K. Effect of Free-Volume Hole Fraction on Dynamic Mechanical Properties of Epoxy Resins Investigated by Pressure–Volume–Temperature Technique. J Phys Chem B 2020; 124:1824-1832. [DOI: 10.1021/acs.jpcb.9b10978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. J. Zhang
- Division of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - S. Sellaiyan
- Division of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - K. Sako
- Division of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - A. Uedono
- Division of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - Y. Taniguchi
- NIPPON STEEL Chemical & Material Co., Ltd., Kitasode 11-5, Sodegaura, Chiba 299-0266, Japan
| | - K. Hayashi
- NIPPON STEEL Chemical & Material Co., Ltd., Kitasode 11-5, Sodegaura, Chiba 299-0266, Japan
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Rajesh P, Sellaiyan S, Uedono A, Arun T, Joseyphus RJ. Positron Annihilation Studies on Chemically Synthesized FeCo Alloy. Sci Rep 2018; 8:9764. [PMID: 29950606 PMCID: PMC6021385 DOI: 10.1038/s41598-018-27949-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 06/04/2018] [Indexed: 11/09/2022] Open
Abstract
Equiatomic flower-like FeCo magnetic nanoparticles are synthesized through a modified one-pot polyol technique. The as-prepared samples are annealed at 700 and 800 °C under reducing atmosphere. The saturation magnetization and coercivity of the flower-like FeCo are found to be 198 (1) emu/g and 243 (10) Oe respectively. The magnetic properties of FeCo approach the bulk behavior with annealing. Positron lifetime studies on the chemically synthesized equiatomic FeCo magnetic nanoparticles with flower-like morphology are reported and compared with Fe, Co and FeCo annealed at various temperatures. The FeCo is characterized by different lifetime components corresponding to positron annihilation events in vacancies and various open volume defects due to their unique morphology. The studies suggest defects arising out of cluster vacancies and interpetal gap that reduce on annealing. The average pore size obtained from positron annihilation studies closely matches with the interpetal distance obtained from the electron microscopic analysis for the flower-like FeCo.
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Affiliation(s)
- P Rajesh
- Magnetic Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, 620015, India
| | - S Sellaiyan
- Division of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan.
| | - A Uedono
- Division of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan
| | - T Arun
- Advanced Materials Laboratory, Department of Mechanical Engineering, University of Chile, Santiago, Chile
| | - R Justin Joseyphus
- Magnetic Materials Laboratory, Department of Physics, National Institute of Technology, Tiruchirappalli, 620015, India.
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Zhang HJ, Sellaiyan S, Kakizaki T, Uedono A, Taniguchi Y, Hayashi K. Effect of Free-Volume Holes on Dynamic Mechanical Properties of Epoxy Resins for Carbon-Fiber-Reinforced Polymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00472] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- H. J. Zhang
- Division
of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - S. Sellaiyan
- Division
of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - T. Kakizaki
- Division
of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - A. Uedono
- Division
of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
| | - Y. Taniguchi
- Epoxy Resin Materials Center, Nippon Steel & Sumikin Chemical Co. Ltd., 11-5 Kitasode, Sodegaura, Chiba 299-0266, Japan
| | - K. Hayashi
- Epoxy Resin Materials Center, Nippon Steel & Sumikin Chemical Co. Ltd., 11-5 Kitasode, Sodegaura, Chiba 299-0266, Japan
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Hughes A, Trinchi A, Chen F, Yang YS, Sellaiyan S, Carr J, Lee P, Thompson G, Xiao T. Structure and Transport in Coatings from Multiscale Computed Tomography of Coatings—New Perspectives for Eelectrochemical Impedance Spectroscopy Modeling? Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.10.183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hughes AE, Trinchi A, Chen FF, Yang YS, Cole IS, Sellaiyan S, Carr J, Lee PD, Thompson GE, Xiao TQ. Revelation of intertwining organic and inorganic fractal structures in polymer coatings. Adv Mater 2014; 26:4504-4508. [PMID: 24789506 DOI: 10.1002/adma.201400561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/27/2014] [Indexed: 06/03/2023]
Abstract
X-ray microtomography and serial block face scanning electron microscopy are used to reveal independent clusters of inorganic particles embedded within a polymer. These clusters are interpenetrating, of varying size, and have fractal dimensions that strongly influence transport and structure-property relations. This interpretation forms a baseline for designing hybrid materials for applications in self-healing, drug delivery, and membranes.
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Affiliation(s)
- A E Hughes
- CSIRO Materials Science and Engineering, Private Bag 33, Clayton, 3169, Australia
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Sellaiyan S, Smith SV, Hughes AE, Miller A, Jenkins DR, Uedono A. Understanding the effect of nanoporosity on optimizing the performance of self-healing materials for anti-corrosion applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/262/1/012054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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