Schematic illustration of electromagnetic wave absorption and antibacterial mechanisms (IMAGE)

Tsinghua University Press

Schematic illustration of electromagnetic wave absorption and antibacterial mechanisms

Caption

First, the high specific surface area SiOC/Ag composite increases the times of reflection and prolongs the propagation path of the electromagnetic wave, which enhances the consumption of electromagnetic wave energy.   Second, the interconnected conductive carbon network of the SiOC/Ag composite facilitates the transport of free electrons, leading to conductive loss to attenuate electromagnetic wave energy under an alternating electromagnetic field.   Last but not least, the numerous heterointerfaces between SiOC, carbon, and Ag nanoparticles result in electron accumulation owing to the difference in conductivity, causing interfacial polarization loss. Therefore, the superior electromagnetic wave absorption performance of the SiOC/Ag composite can be achieved by the synergistic effects of multiple reflections, conductive loss and interfacial polarization.

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Journal of Advanced Ceramics, Tsinghua University Press

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