Reduced graphene oxide/MnFe2O4 nanocomposite papers for fast electrical heating and microwave absorption

In Situ Forming MnFe2O4/D201 Magnetic Composite Adsorbents for High Selectivity Adsorption and Deep Treatment of As(V) from Wastewater

“…The Fe2p peaks exhibited major peaks before adsorption at 711.13, 715.07, 724.66, and 731.55 eV. The binding energies of Mn2p and Fe2p shifted after As(V) adsorption, indicating that Mn and Fe species reacted with As(V) [55, 56]. After adsorption, a raw peak at 45.25 eV is observed in Figure 8(i), attributed to the As V -O.…”

Optimization of CoFe2O4 nanoparticles and graphite fillers to endow thermoplastic polyurethane nanocomposites with superior electromagnetic interference shielding performance

“…4 An effective EM wave absorber should have a high dielectric and magnetic loss. 5 By achieving balanced impedance matching and EM wave attenuation, combining magnetic and electrically conducting materials effectively improves EM wave absorption. 5 The main contributors to EM wave absorption are the interactions of complex dielectric permittivity, complex magnetic permeability, and conductivity.…”

“… 5 By achieving balanced impedance matching and EM wave attenuation, combining magnetic and electrically conducting materials effectively improves EM wave absorption. 5 The main contributors to EM wave absorption are the interactions of complex dielectric permittivity, complex magnetic permeability, and conductivity. 6 As a result, researchers have made several efforts to combine the advantages of dielectric and magnetic materials with those of polymers in order to take advantage of their synergistic properties.…”

Superior Instant Heating and Electrothermal Performances of Interconnected Graphene-Expanded Graphite-Based Electric Heating Composite

“…25−27 Among them, graphene not only has the highest theoretical conductivity (10 6 S•m −1 ) but also has the highest thermal conductivity (5300 W•m −1 •K −1 ), which allows the electric heating composites using graphene as conductive fillers to exhibit not only superior heating performance but also short temperature response time. 31 Therefore, graphene shows great potential in terms of electrical and thermal conductivities as well as electrothermal performances for the carbon-based electric heating composites in the electric heating tube. Electrochemical exfoliation is a burgeoning method for graphene production by inserting electrolyte anions or cations into graphite layers driven by an electric field to overcome the van der Waals forces between the graphite layers.…”

“…On the contrary, carbon-based conductive fillers show great advantages in this regard, which are mainly represented by graphite, graphene, carbon nanotubes (CNTs), conductive carbon black (CB), and carbon fiber (CF). − Among them, graphene not only has the highest theoretical conductivity (10 6 S·m –1 ) but also has the highest thermal conductivity (5300 W·m –1 ·K –1 ), which allows the electric heating composites using graphene as conductive fillers to exhibit not only superior heating performance but also short temperature response time. , Li et al prepared transparent electrothermal film defoggers and anti-icing coatings using wrinkled graphene, where the demister could completely eliminate fog within 5 s with a safe voltage of 28 V and the anti-icing coatings could delay freezing for 1.25 h at −15 °C . Peng et al prepared a multifunctional graphene oxide-MnFe 2 O 4 paper by simple solution pouring and thermal reduction methods, which achieved rapid electric heating and provided a saturation temperature of 100.2 °C within 15 s at a constant current of 0.35 A . Therefore, graphene shows great potential in terms of electrical and thermal conductivities as well as electrothermal performances for the carbon-based electric heating composites in the electric heating tube.…”