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首页> 外文期刊>Trends in Ecology & Evolution >MnxZn1-xFe2O4 coated with beta-Bi2O3 and beta-MnO2 as a highly efficient and magnetically recyclable photocatalyst for water treatment
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MnxZn1-xFe2O4 coated with beta-Bi2O3 and beta-MnO2 as a highly efficient and magnetically recyclable photocatalyst for water treatment

机译：MNXZN1-XFE2O4用β-BI2O3和β-MNO2涂覆，作为用于水处理的高效和磁性可回收的光催化剂

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摘要

Magnetic photocatalyst beta-Bi2O3/beta-MnO2/MnxZn1-xFe2O4 (BM/MZF) was successfully synthesised using dip-calcination method. The structure and properties of as-prepared samples were characterised by XRD, SEM, FT-IR, UV-DRS and VSM. The peaks of beta-Bi2O3 and beta-MnO2 without an obvious change in the XRD pattern of BM/MZF confirmed that their morphology and phase stayed stable during the process of preparation. BM/MZF with a structure of bulked MnxZn1-xFe2O4 coated with spherical and flaky beta-Bi2O3 and spherical beta-MnO2 possesses good optional and magnetic abilities. The band gap of BM/MZF (2.34 eV) was less than that of beta-Bi2O3 (2.48 eV) or beta-Bi2O3/MnxZn1-xFe2O4 (2.43 eV). Under visible light irradiation, the photodegradation rate of RhB using BM/MZF was 98.9% in 1.75 h, which was higher than that using beta-Bi2O3 (48%) or beta-Bi2O3/MnxZn1-xFe2O4 (65%), and the photodegradation rate was still 95.7% after five cycles. The saturation magnetisation (Ms) of BM/MZF was 6.95 emu/g, and the average recovery rate was 87%.
机译：使用浸渍煅烧方法成功地合成磁性光催化剂β-Bi2O3 /β-MnO 2 / MNXZN1-XFE2O4（BM / MZF）。由XRD，SEM，FT-IR，UV-DRS和VSM的特征在于制备样品的结构和性质。 Bβ-Bi2O3和Beta-MnO2的峰没有BM / MZF的XRD模式的明显变化证实了它们在制备过程中的形态和相位稳定。 BM / MZF具有涂有球形和片状BETA-BI2O3和球形β-MNO2的致球的MNXZN1-XFE2O4结构的BM / MZF具有良好的可选和磁性能力。 BM / MZF（2.34eV）的带隙小于β-Bi2O3（2.48eV）或β-Bi2O3 / MNXZN1-XFE2O4（2.43eV）。在可见光照射下，使用BM / MZF的rHB的光降解速率为1.75小时的98.9％，比使用β-Bi2O3（48％）或β-Bi2O3 / MNXZN1-XFE2O4（65％），以及光降解的98.9％在五个周期后，速度仍然是95.7％。 BM / MZF的饱和磁化（MS）为6.95 EMU / g，平均回收率为87％。

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