1
|
Ramachandrappa UR, Shivanna VY, Shastry MHC, Lakshmaiah S, Nagarthnamma SK, Rajachari M, Mahadevappa RK, Shivanna M. Synthesis and characterisation of calcium-iron-aluminium nanocomposites for electromagnetic radiation shielding application. RADIATION PROTECTION DOSIMETRY 2024; 200:1143-1152. [PMID: 39016510 DOI: 10.1093/rpd/ncad292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 07/24/2023] [Accepted: 11/02/2023] [Indexed: 07/18/2024]
Abstract
Electromagnetic shielding parameters are crucial to investigate unexplored nanoparticles and their nanocomposites. Herein, calcium-iron-aluminium (Ca: Fe: Al) nanocomposites are synthesised using the simple solution combustion technique. The as-synthesised nanocomposites with various doping concentrations of Al nanoparticles are characterised to study the structural and surface parameters and to confirm the successful formation. Further, the procured Ca: Fe: Al nanocomposites along with various doping concentrations are utilised for electromagnetic shielding applications, and various shielding parameters are calculated. It was confirmed that Ca: Fe: Al nanocomposites are suitable for electromagnetic shielding applications.
Collapse
Affiliation(s)
- Umashankara Raja Ramachandrappa
- Department of Physics, St. Philomena's College, Attibele, Anekal Taluk, Bengaluru 562107, Karnataka, India
- Department of Physics, Government First Grade College, Devanahalli-562110 Karnataka, India
| | - Vidya Yakekadakalu Shivanna
- Department of Physics, Lal Bahadur Shastri Government First Grade College, RT Nagar, Bangalore 560032, Karnataka, India
| | | | - Seenappa Lakshmaiah
- Department of Physics, Government First Grade College, Mulabagilu-563131, Karnataka, India
- Department of Physics, Government College for Women, Kolar 563101, Karnataka, India
| | | | | | | | - Manjunath Shivanna
- Department of Chemistry, B.M.S. College of Engineering, Bengaluru 560019, Karnataka, India
| |
Collapse
|
2
|
Munirathnam R, Seenappa L, Manjunatha HCS, Vidya YS, Sridhar KN, Manjunath S, Veera Rethina Murugan S, Nagaiah N. Synthesis and characterization of Ag-doped cerium oxide nanoparticles for electromagnetic radiation shielding. RADIATION PROTECTION DOSIMETRY 2023; 199:2513-2519. [PMID: 38126859 DOI: 10.1093/rpd/ncad221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/10/2023] [Accepted: 06/15/2023] [Indexed: 12/23/2023]
Abstract
In the current study, CeO2: Ag (0 and 11 mol) nanoparticles (NPs) were synthesized by solution combustion method using Aloevera extract as reducing agent. As-obtained NPs were characterized by standard techniques. Bragg's reflections confirm the formation of a single-phase cubic structure of CeO2:Ag NPs. Crystalline size is calculated using both the W-H plot and Scherrer's equation. Crystallite size found to decrease with increase in the dopant concentration. EDAX pattern confirmed the presence of Ce, O and Ag. Direct energy band calculated using Wood and Tauc's was found to be in the range of 2.9-2.2 eV for 0 and 11 mol, respectively. Fourier transformation infrared spectroscopy (FTIR) analysis confirmed the presence of the functional groups. Total shielding efficiency (SET) will give the best representation of EMI shielding properties. SET values calculated for a wide range of wavelengths are found to be as follows: near infrared (1.65 × 102 dB), mid infrared (9.78 × 101 dB) and far infrared (6.32 × 101 dB), followed by microwave region (MW) (6.46 × 101 dB), ultra-high frequency (UHF) (7.31 × 101 dB), very high frequency (VHF) (8.27 × 101 dB), high frequency (HF) (9.26 × 101 dB), medium frequency (MF) (1.02 × 102 dB), low frequency (LW) (1.12 × 102 dB), very low frequency (VLF) (1.22 × 102 dB), ultra-low frequency (ULF) (1.42 × 102 dB) and extremely low frequency (ELF) (1.52 × 102 dB). SET values of CeO2:Ag NPs are compared with other traditional materials and nanocomposites and found to be potential use in EMI shielding applications.
Collapse
Affiliation(s)
- Rajachari Munirathnam
- Department of Physics, Rajah Serfoji Government College (Autonomous), Thanjavur, Tamil Nadu 613005, India
- Department of Physics, Government College for Women, Kolar, Karnataka 563101, India
| | - Lakshmaiah Seenappa
- Department of Physics, Government College for Women, Kolar, Karnataka 563101, India
| | | | - Yalekadakalu Shivanna Vidya
- Department of Physics, Lal Bahadur Shastri Government First Grade College, RT Nagar, Bengaluru, Karnataka 560032, India
| | | | - Shivanna Manjunath
- Department of Chemistry, B.M.S. College of Engineering, Bengaluru, Karnataka 560019, India
| | | | - Ningaiah Nagaiah
- Department of Physics, Bangalore University, Bengaluru, Karnataka 560056, India
| |
Collapse
|
3
|
Latif Z, Rehman AU, Amin N, Arshad MI, Marzouki R. Graphene nanoplatelets (GNPs): a source to bring change in the properties of Co-Ni-Gd-ferrite/GNP nanocomposites. RSC Adv 2023; 13:34308-34321. [PMID: 38024970 PMCID: PMC10664697 DOI: 10.1039/d3ra02080k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 11/07/2023] [Indexed: 12/01/2023] Open
Abstract
The nanocomposites of Co0.5Ni0.5Gd0.03Fe1.97O4/graphene nanoplatelets (CNGF/GNPs) were synthesized by a cost-effective sol-gel auto combustion (SGAC) route. The X-ray diffraction analysis confirmed the cubic structure of the as-prepared nanocomposites, and a crystallite size of 32.28 nm was observed for the 7.5 wt% GNPs. Irregular and unique nanoparticles consisting of short stacks of graphene sheets having a platelet shape were confirmed by the morphological analysis of the as-prepared nanocomposites. Raman analysis revealed a spinel crystal structure along with a new vibrational mode due to the GNPs. The energy bandgap was 3.98 eV for the composite with 7.5 wt% GNP concentration. It was observed that the percentage temperature coefficient of resistance (TCR%) rapidly decreased with an increase in temperature both in low- and high-temperature ranges. Dielectric studies carried out in the frequency range 104-107 Hz confirmed that the graphene-added composites had high values for both the real and imaginary parts of permittivity at low frequencies. A decrease in saturation magnetization with an increase in GNP concentration was observed compared with the pure CNGF samples. Hence, the as-prepared composites are useful for application in high-frequency devices as well as spintronics.
Collapse
Affiliation(s)
- Zartashia Latif
- Department of Physics, Government College University Faisalabad Pakistan
| | - Atta Ur Rehman
- Department of Physics, Government College University Faisalabad Pakistan
| | - Nasir Amin
- Department of Physics, Government College University Faisalabad Pakistan
| | - Muhammad Imran Arshad
- Department of Physics, Government College University Faisalabad Pakistan
- Biophysics Group, Department of Physics and Astronomy, University College London Gower Street London WC1E 6BT UK
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories 21 Albemarle Street London W1S 4BS UK
| | - Riadh Marzouki
- Department of Chemistry, College of Sciences, King khalid University Abha, 61413 Saudi Arabia
| |
Collapse
|
4
|
Mohan Arjun A, Shabana N, Ankitha M, Abdul Rasheed P. Electrochemical deposition of Prussian blue on Nb2CT MXene modified carbon cloth for the non-enzymatic electrochemical detection of hydrogen peroxide. Microchem J 2023. [DOI: 10.1016/j.microc.2022.108301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
5
|
Baburao B, Hari Kumar N, Edukondalu A, Venkata Narayana M, Ravinder D. Structural, Optical, DC electrical, Thermo-electric, Dielectric and magnetic properties of Mg0.8Zn0.2GdxFe2-xO4 nanoparticles synthesised by citrate-gel auto combustion method. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
6
|
Mirza FS, Aftab ZEH, Ali MD, Aftab A, Anjum T, Rafiq H, Li G. Green synthesis and application of GO nanoparticles to augment growth parameters and yield in mungbean ( Vigna radiata L.). FRONTIERS IN PLANT SCIENCE 2022; 13:1040037. [PMID: 36438114 PMCID: PMC9685626 DOI: 10.3389/fpls.2022.1040037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Plant growth promotion has long been a challenge for growers all over the world. In this work, we devised a green nanomaterial-assisted approach to boost plant growth. It has been reported that carbon nanomaterials are toxic to plants because they can inhibit the uptake of nutrients if employed in higher concentrations, however this study shows that graphene oxide (GO) can be used as a regulator tool to improve plant growth and stability. Graphene oxide in different concentrations was added to the soil of mungbean. It is proved that when a suitable amount of graphene oxide was applied, it had a good influence on plant growth by enhancing the length of roots and shoots, number of leaves, number of root nodules per plant, number of pods, and seeds per pod. We presume that the use of bio-fabricated graphene oxide as a strategy would make it possible to boost both plant growth and the significant increase in the number of seeds produced by each plant.
Collapse
Affiliation(s)
- Faisal Shafiq Mirza
- Guangdong Key Laboratory for New Technology Research of Vegetables/Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Zill-e-Huma Aftab
- Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | | | - Arusa Aftab
- Department of Botany, Lahore College for Women University, Lahore, Pakistan
| | - Tehmina Anjum
- Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Hamza Rafiq
- Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Guihua Li
- Guangdong Key Laboratory for New Technology Research of Vegetables/Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| |
Collapse
|
7
|
Sumalatha E, Hari kumar N, Edukondalu A, Ravinder D. Effect of La3+ ion doped Co-Zn Nano Ferrites: Structural, Optical, Electrical and Magnetic Properties. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
8
|
Bhagat A, Kokkiripati A, Bhaduri B. Synthesis of silver nanoparticles anchored on nickel ferrite/oxidized-graphite composite for the efficient reduction of aqueous P-nitrophenol. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109806] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
9
|
Electrical, dielectric, I-V and antimicrobial behavior of cobalt incapacitated Prussian blue graphene ferrites composite. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|