Abstract
Nowadays, electromagnetic radiation has become one of the environmental pollution problems faced by human beings. The CoxZn1-xFe2O4/diatomite (xCZD) composites were successfully synthesized by sol-gel autocombustion method. The structure and morphology of the CoxZn1-xFe2O4/diatomite was characterized by XRD, FTIR and SEM. The specific surface area of 0.5CZD measured by BET was 72.201 m2/g. The appropriate doping of magnetic Co2+ changes the electromagnetic parameters and band structure of the composites, thus improving its antibacterial and microwave absorption properties. When the matching thickness is 4.5 mm, the minimum reflection loss of Co0.5Zn0.5Fe2O4/diatomite is 1.5 dB lower than that of ZnFe2O4/diatomite. In addition, the antibacterial results showed that the Co0.5Zn0.5Fe2O4/diatomite sample had the best antibacterial effect on E. coli, and the disinfection rate reached 99.57% in 30 min. This fully proves the good performance of CoxZn1-xFe2O4/diatomite in absorbing wave and antibacterial, and is expected to become a good interior wall decoration material.
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