Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics
Abstract Biomass-derived materials have recently received considerable attention as lightweight, low-cost, and green microwave absorbers. On the other hand, sulfide nanostructures due to their narrow band gaps have demonstrated significant microwave characteristics. In this research, carbon microtub...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-91370-5 |
| _version_ | 1819129328211853312 |
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| author | Reza Peymanfar Elnaz Selseleh-Zakerin Ali Ahmadi Seyed Hassan Tavassoli |
| author_facet | Reza Peymanfar Elnaz Selseleh-Zakerin Ali Ahmadi Seyed Hassan Tavassoli |
| author_sort | Reza Peymanfar |
| collection | DOAJ |
| description | Abstract Biomass-derived materials have recently received considerable attention as lightweight, low-cost, and green microwave absorbers. On the other hand, sulfide nanostructures due to their narrow band gaps have demonstrated significant microwave characteristics. In this research, carbon microtubes were fabricated using a biowaste and then functionalized by a novel complementary solvothermal and sonochemistry method. The functionalized carbon microtubes (FCMT) were ornamented by CuCo2S4 nanoparticles as a novel spinel sulfide microwave absorber. The prepared structures illustrated narrow energy band gap and deposition of the sulfide structures augmented the polarizability, desirable for dielectric loss and microwave attenuation. Eventually, the architected structures were blended by polyacrylonitrile (PAN) to estimate their microwave absorbing and antibacterial characteristics. The antibacterial properties against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) were scrupulously assessed. Noteworthy, the maximum reflection loss (RL) of the CuCo2S4/PAN with a thickness of 1.75 mm was 61.88 dB at 11.60 GHz, while the architected FCMT/PAN composite gained a broadband efficient bandwidth as wide as 7.91 GHz (RL > 10 dB) and 3.25 GHz (RL > 20 dB) with a thickness of 2.00 mm. More significantly, FCMT/CuCo2S4/PAN demonstrated an efficient bandwidth of 2.04 GHz (RL > 20 dB) with only 1.75 mm in thickness. Interestingly, FCMT/CuCo2S4/PAN and CuCo2S4/PAN composites demonstrated an electromagnetic interference shielding efficiency of more than 90 and 97% at the entire x and ku-band frequencies, respectively. |
| first_indexed | 2024-12-22T08:41:58Z |
| format | Article |
| id | doaj.art-38c5cd606f064a48acdd2f814a240db1 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-22T08:41:58Z |
| publishDate | 2021-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-38c5cd606f064a48acdd2f814a240db12022-12-21T18:32:12ZengNature PortfolioScientific Reports2045-23222021-06-0111111510.1038/s41598-021-91370-5Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristicsReza Peymanfar0Elnaz Selseleh-Zakerin1Ali Ahmadi2Seyed Hassan Tavassoli3Laser and Plasma Research Institute, Shahid Beheshti UniversityDepartment of Chemical Engineering, Energy Institute of Higher EducationDepartment of Chemical Engineering, Energy Institute of Higher EducationLaser and Plasma Research Institute, Shahid Beheshti UniversityAbstract Biomass-derived materials have recently received considerable attention as lightweight, low-cost, and green microwave absorbers. On the other hand, sulfide nanostructures due to their narrow band gaps have demonstrated significant microwave characteristics. In this research, carbon microtubes were fabricated using a biowaste and then functionalized by a novel complementary solvothermal and sonochemistry method. The functionalized carbon microtubes (FCMT) were ornamented by CuCo2S4 nanoparticles as a novel spinel sulfide microwave absorber. The prepared structures illustrated narrow energy band gap and deposition of the sulfide structures augmented the polarizability, desirable for dielectric loss and microwave attenuation. Eventually, the architected structures were blended by polyacrylonitrile (PAN) to estimate their microwave absorbing and antibacterial characteristics. The antibacterial properties against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) were scrupulously assessed. Noteworthy, the maximum reflection loss (RL) of the CuCo2S4/PAN with a thickness of 1.75 mm was 61.88 dB at 11.60 GHz, while the architected FCMT/PAN composite gained a broadband efficient bandwidth as wide as 7.91 GHz (RL > 10 dB) and 3.25 GHz (RL > 20 dB) with a thickness of 2.00 mm. More significantly, FCMT/CuCo2S4/PAN demonstrated an efficient bandwidth of 2.04 GHz (RL > 20 dB) with only 1.75 mm in thickness. Interestingly, FCMT/CuCo2S4/PAN and CuCo2S4/PAN composites demonstrated an electromagnetic interference shielding efficiency of more than 90 and 97% at the entire x and ku-band frequencies, respectively.https://doi.org/10.1038/s41598-021-91370-5 |
| spellingShingle | Reza Peymanfar Elnaz Selseleh-Zakerin Ali Ahmadi Seyed Hassan Tavassoli Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics Scientific Reports |
| title | Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics |
| title_full | Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics |
| title_fullStr | Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics |
| title_full_unstemmed | Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics |
| title_short | Architecting functionalized carbon microtube/carrollite nanocomposite demonstrating significant microwave characteristics |
| title_sort | architecting functionalized carbon microtube carrollite nanocomposite demonstrating significant microwave characteristics |
| url | https://doi.org/10.1038/s41598-021-91370-5 |
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