Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution
Electromagnetic interference (EMI) is a major issue due to the increased use of electronic devices operating in the gigahertz frequency range. Consequently, to reduce electromagnetic pollution, materials with considerable magnetic and dielectric loss can be used for the attenuation of electromagneti...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523923001794 |
| _version_ | 1797296216863670272 |
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| author | Ritu Chahal Yamini Dalal Sajjan Dahiya Rajesh Punia A.S. Maan Kuldeep Singh Anil Ohlan |
| author_facet | Ritu Chahal Yamini Dalal Sajjan Dahiya Rajesh Punia A.S. Maan Kuldeep Singh Anil Ohlan |
| author_sort | Ritu Chahal |
| collection | DOAJ |
| description | Electromagnetic interference (EMI) is a major issue due to the increased use of electronic devices operating in the gigahertz frequency range. Consequently, to reduce electromagnetic pollution, materials with considerable magnetic and dielectric loss can be used for the attenuation of electromagnetic waves. In this paper, Fe3O4 FeNi3 spherical mesoporous nanoparticles embedded on reduced graphene oxide (RGO) layers have been synthesized using the hydrothermal reduction method. The specific surface area of Fe3O4@FeNi3/RGO nanocomposite was 67.4 m2/g with a pore size diameter of 3.4 nm (i.e., mesoporous range). Fe3O4@FeNi3/RGO nanocomposites show an enhanced absorption dominant shielding effectiveness (SE) value of 46.49 dB as compared to its binary counterpart Fe3O4@FeNi3, having SE value of 25.21 dB. The synthesized Fe3O4@FeNi3/RGO nanocomposite of thickness 1.42 mm has SER of ∼10.32 dB and SEA of ∼36.15 dB at 15 GHz. Furthermore, it is observed that shielding efficiency increases with increasing reduced graphene oxide (RGO) content in Fe3O4@FeNi3, which is owing to an excellent interconnected network between RGO and Fe3O4@FeNi3. The RGO sheets can create a comprehensive conductive network for the distribution of charges and can enhance dielectric loss because of the layered structure, greater specific surface area and large aspect ratio. Additionally, the mesoporous Fe3O4@FeNi3 hybrid embellished on the surface of RGO may be employed as a multi-pole polarisation centre, enhancing the electronic and space charge polarization of the composites, which is helpful for strong EM wave absorption. It was believed that these nanocomposites would pave the way for the development of RGO-based mesoporous nanocomposites as broadband, lightweight and effective shielding material for practical applications. |
| first_indexed | 2024-03-07T22:00:11Z |
| format | Article |
| id | doaj.art-87f1037c7271408e918a93d5d8315d8a |
| institution | Directory Open Access Journal |
| issn | 2666-5239 |
| language | English |
| last_indexed | 2024-03-07T22:00:11Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj.art-87f1037c7271408e918a93d5d8315d8a2024-02-24T04:55:28ZengElsevierApplied Surface Science Advances2666-52392024-02-0119100545Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollutionRitu Chahal0Yamini Dalal1Sajjan Dahiya2Rajesh Punia3A.S. Maan4Kuldeep Singh5Anil Ohlan6Department of Physics, Maharshi Dayanand University, Rohtak 124001, IndiaDepartment of Physics, Maharshi Dayanand University, Rohtak 124001, IndiaDepartment of Physics, Maharshi Dayanand University, Rohtak 124001, IndiaDepartment of Physics, Maharshi Dayanand University, Rohtak 124001, IndiaDepartment of Physics, Maharshi Dayanand University, Rohtak 124001, India; Corresponding authors.CSIR-Central Electrochemical Research Institute (CECRI) Chennai Unit, CSIR Madras Complex, Taramani, Chennai 600113, IndiaDepartment of Physics, Maharshi Dayanand University, Rohtak 124001, India; Corresponding authors.Electromagnetic interference (EMI) is a major issue due to the increased use of electronic devices operating in the gigahertz frequency range. Consequently, to reduce electromagnetic pollution, materials with considerable magnetic and dielectric loss can be used for the attenuation of electromagnetic waves. In this paper, Fe3O4 FeNi3 spherical mesoporous nanoparticles embedded on reduced graphene oxide (RGO) layers have been synthesized using the hydrothermal reduction method. The specific surface area of Fe3O4@FeNi3/RGO nanocomposite was 67.4 m2/g with a pore size diameter of 3.4 nm (i.e., mesoporous range). Fe3O4@FeNi3/RGO nanocomposites show an enhanced absorption dominant shielding effectiveness (SE) value of 46.49 dB as compared to its binary counterpart Fe3O4@FeNi3, having SE value of 25.21 dB. The synthesized Fe3O4@FeNi3/RGO nanocomposite of thickness 1.42 mm has SER of ∼10.32 dB and SEA of ∼36.15 dB at 15 GHz. Furthermore, it is observed that shielding efficiency increases with increasing reduced graphene oxide (RGO) content in Fe3O4@FeNi3, which is owing to an excellent interconnected network between RGO and Fe3O4@FeNi3. The RGO sheets can create a comprehensive conductive network for the distribution of charges and can enhance dielectric loss because of the layered structure, greater specific surface area and large aspect ratio. Additionally, the mesoporous Fe3O4@FeNi3 hybrid embellished on the surface of RGO may be employed as a multi-pole polarisation centre, enhancing the electronic and space charge polarization of the composites, which is helpful for strong EM wave absorption. It was believed that these nanocomposites would pave the way for the development of RGO-based mesoporous nanocomposites as broadband, lightweight and effective shielding material for practical applications.http://www.sciencedirect.com/science/article/pii/S2666523923001794Shielding effectivenessHydrothermal methodReduced graphene oxideMesoporousNanocomposite |
| spellingShingle | Ritu Chahal Yamini Dalal Sajjan Dahiya Rajesh Punia A.S. Maan Kuldeep Singh Anil Ohlan Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution Applied Surface Science Advances Shielding effectiveness Hydrothermal method Reduced graphene oxide Mesoporous Nanocomposite |
| title | Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution |
| title_full | Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution |
| title_fullStr | Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution |
| title_full_unstemmed | Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution |
| title_short | Insitu assembly of Fe3O4@FeNi3 spherical mesoporous nanoparticles embedded on 2D reduced graphene oxide (RGO) layers as protective barrier for EMI pollution |
| title_sort | insitu assembly of fe3o4 feni3 spherical mesoporous nanoparticles embedded on 2d reduced graphene oxide rgo layers as protective barrier for emi pollution |
| topic | Shielding effectiveness Hydrothermal method Reduced graphene oxide Mesoporous Nanocomposite |
| url | http://www.sciencedirect.com/science/article/pii/S2666523923001794 |
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