Green synthesize of fly ash-based zeolite X: a potential microwave absorbent

Zeolite X is a potential electromagnetic wave (EMW) absorption material owning to its advantages of good dielectric properties, light weight and large specific surface area. Herein, high-purity zeolite was prepared from fly ash using green synthesis approach, in which only trace water used achieved zero discharge waste water. Physiochemical properties fabricated were comprehensively evaluated through XRD, PSD, SEM, TG-DSC BET test. XRD pattern shows the successful preparation with crystallinity high purity, average particle size ~ 2.45 μm, conforms Gaussian distributions. The exhibits typical octahedral structure thermal stability. It noteworthy that area up 473.56 m2/g, representing porous structure, beneficial EMW attenuation. What’s more, abundant crystal adsorbed existing sample conductive dipole polarization, further consume energy. effective bandwidth (EAB) synthesized 2.08 GHz (13.36–15.44 GHz) at thickness 2.5 mm. This study provides an eco-friendly approach change into valuables, moreover absorbing material.