Morphology engineering of YNi-MOFs derivatives for broadband electromagnetic wave absorption

Morphology control strategy is a critical factor in optimizing permittivity and impedance matching. Nevertheless, developing materials with tunable morphology enabling broadband electromagnetic wave (EMW) absorption is a challenging task. In this work, Y2O3/Ni@N-doped carbon (YNC) composites were prepared by solvothermal method and high-temperature carbonization using metal-organic frameworks (MOFs) as raw materials. By regulating the molar ratio of Y3+/Ni2+, the morphology evolved from microsphere to spiky microspheres, and eventually formed dumbbell-like structures. This controllable morphological transformation provides an effective approach for modulating the permittivity. Especially, the spiky…

• NN
  National Natural Science Foundation of China

  Awards: 21667019, 52173267, 22066017
• GO
  Government of Jiangsu Province