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Sheykhmoradi S, Ghaffari A, Mirkhan A, Ji G, Tan S, Peymanfar R. Dendrimer-assisted defect and morphology regulation for improving optical, hyperthermia, and microwave-absorbing features. Dalton Trans 2024; 53:4222-4236. [PMID: 38332744 DOI: 10.1039/d3dt04228f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Electromagnetic pollution and cancer are phenomena that essentially endanger the future of humanity. Herein, multiple approaches are being proposed to solve the aforementioned issues. Recent studies have demonstrated that by regulating the morphology, defect, and phase of materials, their microwave absorbing, optical, and hyperthermia properties are tunable. Calcium ferrite with proper dielectric, magnetic, and biocompatible characteristics was chosen as a substantial candidate to promote its microwave-absorbing properties by regulating its structure. Spinel CaFe2O4 was synthesized through sol-gel and solvothermal routes and its phase, defect, and morphology were manipulated using innovative procedures. Glucose was applied as conventional defecting and templating agent; interestingly, a dendrimer was designed to bear and form nanoparticles. More importantly, a novel reductive process was designed to fabricate one-put Ca/Fe3O4 using a solvothermal method. Particularly, polypropylene (PP) was employed as a practical polymeric matrix to fabricate the eventual product. Structures were molded at a low filling ratio to evaluate their optical and microwave-absorbing performance. As expected, defects, morphology, and phase play a pivotal role in tuning the optical and microwave-absorbing properties of calcium ferrite derivates. Interestingly, the dendrimer-assisted (D-A) formation of CaFe2O4 demonstrated a fascinating reflection loss (RL) of 70.11 dB and an efficient bandwidth (RL ≤ -20 dB) of 7.03 GHz with ultralow thickness (0.65 mm) and filling ratio (10 wt%), attaining proper shielding efficiency (SE) and hyperthermia desirable for its practical application as a material for shielding buildings and cancer therapy. The presented perspective develops new inspirations for architecting microwave absorbing/shielding materials with advanced applications in therapeutic issues.
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Affiliation(s)
- Somayeh Sheykhmoradi
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
| | - Arezoo Ghaffari
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh, Iran
| | - Ali Mirkhan
- Iranian Society of Philosophers, Department of Science, Tehran, Iran
- Peykareh Enterprise Development CO., Tehran, Iran
| | - Guangbin Ji
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, P. R. China
| | - Shujuan Tan
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, P. R. China
| | - Reza Peymanfar
- Department of Pharmaceutical Chemistry, Energy Institute of Higher Education, Saveh, Iran.
- Department of Chemical Engineering, Energy Institute of Higher Education, Saveh, Iran
- Iranian Society of Philosophers, Department of Science, Tehran, Iran
- Peykareh Enterprise Development CO., Tehran, Iran
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Ahmed S, Li B, Luo S, Liao K. Heterogeneous Ti 3C 2T x MXene-MWCNT@MoS 2 Film for Enhanced Long-Term Electromagnetic Interference Shielding in the Moisture Environment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49458-49467. [PMID: 37844286 PMCID: PMC10614194 DOI: 10.1021/acsami.3c08279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 10/01/2023] [Indexed: 10/18/2023]
Abstract
MXene, as a novel two-dimensional (2D) material, has unique inherent features such as lightweight, flexibility, high electrical conductivity, customizable surface chemistry, and facile solution processability. However, utilizing MXene (Ti3C2Tx) films for long-term electromagnetic interference (EMI) shielding poses challenges, as they are susceptible to chemical deterioration through oxidation into TiO2. In this work, an ultrathin heterogeneous film of Ti3C2Tx MXene integrated with multiwalled carbon nanotubes supporting MoS2 clusters (MXene/MWCNT@MoS2) was developed. The heterogeneous film with 15 wt % of MWCNT@MoS2 clusters exhibited improved EMI shielding performance such as the highest EMI shielding effectiveness of 50 dB and the specific shielding effectiveness of 20,355 dB cm2 g -1, mainly attributed to the excellent electrical conductivity, distinctive porous structure, and multiple interfacial interactions. The heterogeneous films underwent extended exposure to a moisture environment (35 days), and their structural stability and EMI shielding performance were enhanced by the integration of MWCNT@MoS2 clusters. As a result, the engineered heterostructure of multilayered hybrid films holds promise as a viable option for improving the EMI shielding effectiveness and stability of Ti3C2Tx MXene.
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Affiliation(s)
- Sarab Ahmed
- Department
of Aerospace Engineering, Khalifa University
of Science and Technology, 127788 Abu Dhabi, UAE
| | - Baosong Li
- Department
of Aerospace Engineering, Khalifa University
of Science and Technology, 127788 Abu Dhabi, UAE
| | - Shaohong Luo
- Department
of Biomedical Engineering, Khalifa University
of Science and Technology, 127788 Abu Dhabi, UAE
| | - Kin Liao
- Department
of Aerospace Engineering, Khalifa University
of Science and Technology, 127788 Abu Dhabi, UAE
- Department
of Mechanical Engineering, Khalifa University
of Science and Technology, 127788 Abu Dhabi, UAE
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