Enhanced microwave absorption properties of reduced graphene oxide/TiO₂ nanowire composites synthesized via simultaneous carbonation and hydrogenation

Abstract

High-performance microwave absorbing materials of reduced graphene oxide (RGO) combined with hydrogenated TiO2 nanowires (h-TiO2nw) were prepared via a solvothermal and annealing method, in which the carbonation and hydrogenation process...

Recent progress in TiO2-based microwave absorption materials

“…Some researchers have considered singlecomponent TiO 2 as a suitable microwave absorber (MA) after hydrogenation. 16,[43][44][45] If TiO 2 grains are heated at high temperatures in a hydrogen atmosphere, they will partially recrystallize from the original crystal phase to the nano-disorder hydrogenated phase, and finally black TiO 2 is obtained. In addition, the disordering process of crystallization affects the chemical properties of TiO 2 , generating a material with MA function.…”

Microstructure regulation and microwave absorption properties of ZnO/RGO composites

“…However, pure RGO has a high dielectric loss, easy impedance mismatch, high reflectivity of electromagnetic wave and poor wave-absorbing performance. [13][14][15] By combining with other substances, for example, dielectric metal oxides (ZnO, 16,17 TiO 2 , 18,19 MnO 20,21 ), magnetic metals and alloys (Fe, Co, Ni) [22][23][24] and their magnetic metal oxides, 25 ferrites, 26 conductive polymers 27 and non-metallic materials 28 are combined with one or multiple components to improve dielectric loss or magnetic loss.…”

Fast, facile and thermal damage free nanowelding of Ag nanowire for flexible transparent conductive film by pressure-assisted microwave irradiation

“…This process involves the fast and selective absorption of microwaves only by materials like metallic wires and thin films, rather than affecting the polymer substrates based on their electromagnetic characteristics 21 , 22 . Microwave processes that operate within specific frequency ranges of the electromagnetic spectrum offer several advantages, including shorter process times, lower power consumption, and higher efficiency compared to other conventional methods 23 , 24 . For instance, Chen et al 25 have explored the application of the microwave process in selective absorption through ZnO nanowire (NW)/epoxy composites.…”