A mixture of 10 wt% CuO-10 wt% Fe2O3 supported on cordierite were prepared by wet impregnation. The as-prepared solids doped with Li2O (0.75-3 mol %) were calcined at 500-900 ºC. The crystalline phase, morphology, and surface area were investigated by XRD, HR-TEM and N2-adsoprtion-desorption. Moreover, their photocatalytic activities of samples calcined at 700°C on the degradation of phenol wer...

5G and forthcoming 6G communication systems require dielectric ceramics with low relative permittivity (εr) near-zero temperature coefficient of resonant frequency (τf) for the lower part microwave (MW) band at sub-Terahertz. Mg2Al4Si5O18 (MAS) are promising candidates due to their εr (~ 6) high-quality factor (Q×f > 40,000 GHz) but have a large τf. In this study, 5.5 wt% TiO2 (MAS-T5.5) was us...