“Matryoshka Doll” Heterostructures Induce Electromagnetic Parameters Fluctuation to Tailor Electromagnetic Wave Absorption

Components manipulation and structure engineering have shown powerful approaches for tailoring electromagnetic (EM) parameters. However, the integration of controllable architectural compositional complexity into one multiple-layer heterostructure seems significantly effective but remains a considerable challenge, correlative quantized modulation EM parameters is scarce. Herein, three types metal–organic frameworks (MOFs) hybrids derived sulfides are ingeniously fabricated by MOF architecture solvothermal sulfuration. Compared to random assembly MOFs in “Chaotic” (Structure 1), regular arrangement MOF-on-MOF heterostructures “Matryoshka doll” 2) guarantees improved lattice strain defect arising from abundant heterointerfaces core–shell heterostructure. Impressively, such aforementioned advantages together with sufficiently exposed sites conductivity display an interesting “quantized state” between “0 “1 subsequent ion exchange process structured Zn–Co sulfides, benefiting “quantization” boost wave (EMW) absorption. Further, introducing metal ions cation-doped 3) subtly optimizes composition defect, leading enhanced impedance matching absorption bandwidth 7.8 GHz at 2.6 mm. This study highlights significant e?ect on fluctuation, which synergy sulfur vacancy, tailor desirable EMW capacity.