Regulating Oxygen Vacancies to Enhance Dipole and Interface Polarization for Highly Efficient Electromagnetic Wave Absorption in SiC@MnO 2 Nanocomposites

Abstract At present, atomic‐scale defect engineering has become a primary strategy for precisely regulating the inherent properties associated with the electronic structure of semiconductors. However, concurrent phenomena and factors during the introduction of defects constrain researchers’ understanding of the correlation between desired defects in various transition metal oxides, electromagnetic parameters, and electromagnetic wave absorption. In this study, MnO 2 nanoneedle arrays are pre‐prepared on the surface of SiC nanowire‐based carriers via a hydrothermal method, subsequently, oxygen vacancy is successfully introduced into the as‐fabricated sample by a simple calcination process. By precisely…

• NN
  National Natural Science Foundation of China

  Awards: 22379080, 52072196, 52202262, 52102106, 52002200, 22379081
• CP
  China Postdoctoral Science Foundation

  Awards: 2023M741871, 2024M761875
• NS
  Natural Science Foundation of Shandong Province

  Award: ZR2023QE059
• KT
  Key Technology Research and Development Program of Shandong

  Award: 2024TSGC0631