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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. [ABSTRACT FROM AUTHOR]

Global concerns have been excited by burgeoning electromagnetic pollution and climate change. Paying attention to building materials is one of the best ways to refine electromagnetic pollution and save energy. Herein, a practical nanocomposite has been introduced that not only absorbs microwaves, but also plays a significant role in energy‐saving. Interestingly, the approach related to the selection of a simple experimental procedure, cost‐effective substrates, and building matrix develops the practical applications of the eventual product. Initially, graphite‐like carbon nitride (g‐C3N4) nanosheets are tailored using a conventional sintering route, and then the prepared nanosheets are ornamented by zinc sulfide (ZnS) nanoparticles through a facile hydrothermal scenario. Remarkably, the microwave and optical features of the tailored ZnS/g‐C3N4 nanocomposite are modulated by regulating the mass fraction of ZnS into 2D structures. Interestingly, a novel defecting agent is used to boost the dielectric characteristics of g‐C3N4 through an innovative complementary hydrothermal and combustion scenario. Eventually, the architected structures are blended with gypsum plaster to evaluate energy‐saving and microwave‐absorbing performance. The nanocomposites fabricated by ZnS/defected g‐C3N4/gypsum plaster as building materials have significant microwave‐absorbing and infrared reflection capacity. The presented research opens a new vista for simultaneous development of advanced functional materials for energy‐saving and microwave absorption. [ABSTRACT FROM AUTHOR]

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 CaFe 2 O 4 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/Fe 3 O 4 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 CaFe 2 O 4 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.