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世界地质 2023, 42(2) 377-389 DOI: ISSN: 1004-5589 CN: 22-1111/P

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	抗生素
	重金属
	磁性生物炭
	光催化
	钨酸铋
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	杨婧婕
	尚永正
	杨健
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	李晨阳
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	PubMed
	Article by YJ
	Article by Shang Y
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	Article by Shi C
	Article by Li C
	Article by Zhong S

磁性生物炭基Bi2 WO6光催化去除水中四环素和Cr(VI)的性能与机制

杨婧婕1 , 尚永正1 , 杨健1 , 张凤君2 , 施春雨3 , 李晨阳1,2 , 钟爽1,2

1. 吉林建筑大学松辽流域水环境教育部重点实验室, 长春 130118;

2. 吉林大学新能源与环境学院, 长春 130021;

3. 吉林省环境科学研究院, 长春 130012

摘要：为实现水环境中抗生素和重金属的高效去除, 采用水热法构筑了一种集高效吸附性? 可见光催化性以及磁回收性于一体的磁性生物炭基钨酸铋光催化剂 (BC@ ZFO/ BWO)? 实验结果表明, 磁性生物炭 (BC@ ZFO) 掺杂量的质量分数为 25% 时, BC@ ZFO/ BWO 的吸附性能和光催化活性最佳, 在 120 min 内, 对 20. 00 mg / L 四环素 (TC) 吸附率为 58. 38% ; 在光反应 60 min 内, 对 20?? 00 mg / L TC 和 Cr (Ⅵ) 去除率分别为 95. 36 % 和 98. 04% ? ESR 测试结果表明, 在光催化反应过程中·O - 2 和 ·OH发挥了主要作用? 重复利用实验表明, 质量分数为 25% 的 (BC@ ZFO) / BWO 具有良好的稳定性与磁回收性? 可见, 相比于传统的钨酸铋光催化剂, BC@ ZFO/ BWO 光催化复合材料的构建, 提升了光催化剂对水中有机污染物和重金属的氧化还原能力, 为水污染修复和粉末催化剂的回收提供了新思路?

关键词：抗生素重金属磁性生物炭光催化钨酸铋

Performance and mechanism of magnetic biochar?based Bi 2 WO6 photocatalytic removal of tetracycline and Cr (Ⅵ) from water

YANG Jingjie 1 , SHANG Yongzheng 1 , YANG Jian 1 , ZHANG Fengjun 2 , SHI Chunyu 3 , LI Chenyang 1,2 , ZHONG Shuang 1,2

1. Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University , Changchun 130118, China;

2.College of New Energy and Environment, Jilin University, Changchun 130021, China;

3. Jilin Institute of Environmental Science, Changchun 130012, China

Abstract: To achieve efficient removal of antibiotics and heavy metals in aquatic environments, a magnetic biochar?based bismuth tungstate photocatalyst (BC@ ZFO/ BWO) integrating efficient adsorption, visible?light pho? tocatalytic activity, and magnetic recyclability has been prepared by using a hydrothermal method in this study. The experimental results showed that when the mass fraction of magnetic biochar (BC@ ZFO) doping was 25% , the ad? sorption performance and photocatalytic activity of BC@ ZFO/ BWO were optimal. Within 120 minutes, the adsorp? tion rate of 20?? 00 mg / L tetracycline (TC) was 58.38% . Within 60 minutes of light reaction, the removal rates of 20?? 00 mg / L TC and Cr (Ⅵ) were 95.36% and 98.04% , respectively. ESR test results indicated that ·O - 2 and ·OH played a dominant role in the photocatalytic degradation process. Repeated usage experiments demonstrated that 25% mass fraction (BC@ ZFO) / BWO possessed good stability and magnetic recyclability. It can be seen that compared with the traditional bismuth tungstate photocatalysts, the construction of BC@ ZFO/ BWO photocatalytic composite material enhanced the redox capability of photocatalysts for organic pollutants and heavy metals in water, providing new insights for water pollution remediation and the recovery of powder catalysts.

Keywords: antibiotics heavy metals magnetic biochar photocatalysis bismuth tungstate

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