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Magnetization of Bi2WO6 composite by using natural maghemite and its application in photocatalytic degradation of isobutyl xanthate
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Bo LIU1, Qian-qian NIE2, *, Shuang-shuang ZUO1, Yun-pei CUI1, Guang-yuan XIE1, Jia-you LIU3, He-sheng YU1, **
China Environmental Science | 2025, 45(10) : 5459 - 5470
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China Environmental Science | 2025, 45(10): 5459-5470
• Water Pollution Control •
Magnetization of Bi2WO6 composite by using natural maghemite and its application in photocatalytic degradation of isobutyl xanthate
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Bo LIU1, Qian-qian NIE2, *, Shuang-shuang ZUO1, Yun-pei CUI1, Guang-yuan XIE1, Jia-you LIU3, He-sheng YU1, **
Affiliations
  • 1.School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
  • 2.School of Physics and New Energy, Xuzhou University of Technology, Xuzhou 221018, China
  • 3.Institute for Advanced Study, Eastern Institute of Technology, Ningbo 315200, China
Published: 2025-10-20
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Natural maghemite (γ-Fe2O3) particles were coated with SiO2 and combined with Bi2WO6 to prepare a magnetic photocatalyst γ-Fe2O3@SiO2/Bi2WO6. The samples were characterized by multiple means of XRD, FESEM, XPS and VSM. The VSM tests indicated that γ-Fe2O3@SiO2/Bi2WO6 possesses magnetic properties, allowing for magnetic recovery and reuse. Compared with Bi2WO6, the catalytic performance of γ-Fe2O3@SiO2/Bi2WO6 for degrading isobutyl xanthate slightly decreases, but the 5%γ-Fe2O3@SiO2/Bi2WO6 can almost completely degrade isobutyl xanthate (60mg/L) within 60min, and the TOC test results showed that the mineralization degree of isobutyl xanthate wastewater was as high as 76.86%. The results of cyclic experiments showed that catalytic activity of γ-Fe2O3@SiO2/Bi2WO6 hardly decreased after 5cycles. The degradation efficiency of isobutyl xanthate stabilized over 99% and the recovery rate of 5%γ-Fe2O3@SiO2/Bi2WO6 was as high as 82.00%. It proved the stability and recyclability of the prepared γ-Fe2O3@SiO2/Bi2WO6 composites. Sacrificial agent experiments and ESR tests indicated that ·O2- was the predominant species in the photo-degradation process of isobutyl xanthate. Finally, DFT calculations confirmed that the active sites on the catalyst surface and xanthate were W atom and S atom, respectively.

photocatalytic degradation  /  xanthate  /  magnetic  /  maghemite  /  bismuth tungstate
刘波, 聂倩倩, 左霜霜, 崔云佩, 谢广元, 刘嘉友, 俞和胜. 天然磁赤铁矿赋磁的Bi2WO6材料制备及其光催化降解异丁基黄药的研究. 中国环境科学, 2025 , 45 (10) : 5459 -5470 .
Bo LIU, Qian-qian NIE, Shuang-shuang ZUO, Yun-pei CUI, Guang-yuan XIE, Jia-you LIU, He-sheng YU. Magnetization of Bi2WO6 composite by using natural maghemite and its application in photocatalytic degradation of isobutyl xanthate[J]. China Environmental Science, 2025 , 45 (10) : 5459 -5470 .
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Year 2025 volume 45 Issue 10
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  • Receive Date：2025-02-24
  • Online Date：2026-10-08
  • Published：2025-10-20
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  • Received：2025-02-24
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Affiliations
    1.School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
    2.School of Physics and New Energy, Xuzhou University of Technology, Xuzhou 221018, China
    3.Institute for Advanced Study, Eastern Institute of Technology, Ningbo 315200, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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