化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (4) : 190-196. DOI: 10.19817/j.cnki.issn1006-3536.2024.04.036

科学研究

Fe₃O₄/MoS₂活化过硫酸氢盐降解水中双酚A研究

^1,2,3

作者信息 +

Degradation of bisphenol A in water by Fe₃O₄/MoS₂ activated PMS

Li Zhangliang^1,2,3, Han Tingting¹, Cai Yiting¹

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Received		Published
2023-10-12		2024-04-20
Issue Date	Revised Date
2024-05-07	2023-10-12

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摘要

以MoS₂为载体,通过共沉淀法合成了一种新型的Fe₃O₄/MoS₂催化剂,并将其用于活化过硫酸氢盐(PMS)降解双酚A(BPA)。利用X射线衍射仪(XRD)、场发射扫描电子显微镜(SEM)、比表面积分析仪(BET)、傅里叶变换红外光谱(FT-IR)等手段对催化剂的形貌、微观结构进行了表征。研究了不同反应体系对BPA降解效果的影响,探讨了不同影响因素对BPA降解效果的影响。结果表明:Fe₃O₄/MoS₂/PMS反应体系可提高对BPA降解率;当BPA浓度为20mg/L、Fe₃O₄/MoS₂催化剂投加量为1.0g/L、PMS浓度为1mmol/L、pH为6.8、温度为60℃条件下,反应120min时Fe₃O₄/MoS₂对BPA降解率达78.20%。Cl^-、HCO^-₃、H₂PO^-₄对反应体系降解BPA有一定影响,NO^-₃对BPA的降解影响较小。自由基淬灭实验表明,·OH、¹O₂、和·O^-₂均发挥了作用,其中 ¹O₂和·O^-₂起主要作用。

Abstract

A novel Fe₃O₄/MoS₂ catalyst was successfully synthesized by coprecipitation method using MoS₂ as a carrier,and was used for the degradation of bisphenol A (BPA) by activated persulfate (PMS).The morphology and microstructure of the catalyst were characterized by X-ray diffraction instrument (XRD),field emission scanning electron microscope (SEM),specific surface area analyzer (BET) and Fourier transform infrared spectroscopy (FT-IR).The effects of different reaction systems on the effect of BPA degradation were investigated,and the influence of different factors on the degradation effect of BPA was explored.The results showed that the Fe₃O₄/MoS₂/PMS reaction system could improve the degradation rate of BPA.When the concentration of BPA was 20mg/L,the catalyst Fe₃O₄/MoS₂ dosage was 1.0g/L,the PMS concentration was 1.0mmol/L,the pH was 6.8,and the temperature was 60℃,the degradation rate of BPA by Fe₃O₄/MoS₂ could reach up to 78.20% after 120min.The presence of Cl^-,HCO^-₃ and H₂PO^-₄ had certain effects on the degradation of BPA in the reaction system,while NO^-₃ had less effect on the degradation of BPA.Free radical quenching experiments indicated that ·OH,¹O₂,and ·O^-₂ all played roles,of which ¹O₂ and ·O^-₂ played major roles.

关键词

四氧化三铁 / 二硫化钼 / 过硫酸氢盐 / 双酚A / 降解

Key words

Fe₃O₄ / molybdenum disulfide / PMS / bisphenol A / degradation

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Fe₃O₄/MoS₂活化过硫酸氢盐降解水中双酚A研究[J]. 化工新型材料, 2024, 52(4): 190-196 DOI:10.19817/j.cnki.issn1006-3536.2024.04.036

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