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J. Korean Ceram. Soc. > Volume 59(2); 2022 > Article
Journal of the Korean Ceramic Society 2022;59(2): 252-262.
doi: https://doi.org/10.1007/s43207-021-00159-9
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
Correspondence  Yi Ding ,Email: dyrqf@ahjzu.edu.cn
Won-Chun Oh ,Email: wc_oh@hanseo.ac.kr
Received: August 7, 2021; Revised: October 21, 2021   Accepted: October 26, 2021.  Published online: March 31, 2022.
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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