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Photocatalytic degradation of aniline by magnetic nanomaterials Fe3O4@SiO2@BiO1.8·0.04H2O/Ag3PO4
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.cplett.2020.137747
Ruihao Jin , Zhixuan Qiu , Wen Cheng , Xinglong Jin

Aniline is recalcitrant pollutant and its efficient and cost-effective removal is greatly needed. According to the existing methods in the laboratory, Fe3O4@SiO2@BiO1.8·0.04H2O/Ag3PO4 (FSBAP) magnetic nanocomposites were prepared and the photocatalytic properties were also evaluated with aniline as model pollutant. The experimental data suggested that the nanocomposites FSBAP could effectively degrade organic pollutants under visible light. The degradation rate of 250 mL aniline solution (10 mg/L) with 1.20 g/L FSBAP catalyst was 88.06% under visible light for 150 min. FSBAP nanocomposites showed good reusability and recyclability after five runs. In addition, scavengers trapping experiments proved that photogenerated holes (h+) played an important role in photocatalytic reaction. The possible mechanism was also proposed. The results revealed that FSBAP exhibited high reusability and stability in degrading aniline.



中文翻译:

磁性纳米材料Fe 3 O 4 @SiO 2 @BiO 1.8 ·0.04H 2 O / Ag 3 PO 4对苯胺的光催化降解

苯胺是难降解的污染物,因此迫切需要高效而经济的去除方法。根据实验室现有方法,Fe 3 O 4 @SiO 2 @BiO 1.8 ·0.04H 2 O / Ag 3 PO 4制备了(FSBAP)磁性纳米复合材料,并以苯胺为模型污染物评估了其光催化性能。实验数据表明,纳米复合材料FSBAP可以在可见光下有效降解有机污染物。250毫升苯胺溶液(10毫克/升)和1.20克/升FSBAP催化剂在可见光下持续150分钟的降解率为88.06%。FSBAP纳米复合材料经过五次运行后显示出良好的可重复使用性和可回收性。此外,清除剂捕集实验证明,光生空穴(h +)在光催化反应中起着重要作用。还提出了可能的机制。结果表明,FSBAP在降解苯胺方面显示出很高的可重用性和稳定性。

更新日期:2020-07-17
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