| Microwave absorption and photocatalytic activity of MgxZn1−x ferrite/diatomite composites |
| Wanmi Guo1, Sulei Wang1, Qifang Ren1, Zhen Jin1, Yi Ding1,2,3, Chunyu Xiong2, Jinpeng Li2, Jing Chen2, Yuelei Zhu2, Won-Chun Oh4 |
1Anhui Advanced Building Materials Engineering Laboratory, Anhui Jianzhu University, Hefei 230601, Anhui, China
2Key Laboratory of Huizhou Architecture in Anhui Province , Anhui Jianzhu University , Hefei 230022 , Anhui , China
3Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse , Anhui Jianzhu University , Hefei 230022 , Anhui , China
4Department of Advanced Materials Science and Engineering , Hanseo University , Seosan 31962 , Republic of Korea |
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Received: August 7, 2021; Revised: October 21, 2021 Accepted: October 26, 2021. Published online: March 31, 2022. |
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| ABSTRACT |
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MgxZn1−x ferrite/diatomite composites were synthesized by a two-step combination process (hydrothermal method and mechanical mixing method). The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), UV–visible absorption spectrum (UV–Vis), X-ray photoelectron spectroscope (XPS), and microwave vector network analyzer. The photocatalytic results showed that the degradation rate of Rhodamine B (RhB) was 50–90% after 90 min of visible light. At 2–18 GHz frequency, when the Mg–Zn ratio increases to 0.8, the reflection loss of a single MgxZn1−x ferrite reaches − 7.23 dB at 8.75 GHz frequency in 3.5 mm thickness while the ratio is 0.2, the reflection loss at 10.23 GHz reaches − 4.07 dB. The photocatalytic performance of MgxZn1−x ferrite /diatomite composite for the degradation of RhB and its microwave absorption performance as absorbent are studied. The importance of developing new functional coatings to improve human environment is discussed. |
| Key words:
MgxZn1−x · Ferrite/diatomite · Microwave absorption · Dielectric loss · Photocatalytic |
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