AI Article Synopsis
- The study investigates the challenges of electromagnetic wave absorption in sulfides due to their changing crystal structures and focuses on enhancing this property using nanosheet-assembled CuS/CN composites with sulfur vacancies.
- It employs self-assembly synthesis and high-temperature treatment to reveal factors like phase transitions, charge density variations, and defect polarizations that affect conductivity and dielectric properties.
- The findings offer valuable insights and guidelines for designing crystal structures to create more effective sulfide-based materials for electromagnetic wave absorption.
Article Abstract
Scrutinizing the electromagnetic wave absorption mechanism of sulfides remains a challenge due to the variability of the modulation of the crystal structure of the sulfides. To take advantage of this variability, nanosheet-assembled CuS/CN composites with sulfur vacancies were prepared in this study by self-assembly synthesis and subsequent high-temperature heat treatment. Systematic studies show the phase transition-dependent induced decrease in the conductivity, the defect site-induced difference in the charge density, the weakened vacancy formation of defect polarization loss, and the influence of valence state on electric dipole polarization loss and interfacial polarization loss, making the optimization of the dielectric constant a significant positive effect on the improvement of impedance matching. This work provides a reliable example and theoretical guidance for the crystal structure design for the preparation of a new generation of efficient sulfide-based wave-absorbing materials.
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| http://dx.doi.org/10.1021/acs.inorgchem.4c03019 | DOI Listing |
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