工业水处理 ›› 2024, Vol. 44 ›› Issue (12): 109-117. doi: 10.19965/j.cnki.iwt.2023-1173

• 试验研究 • 上一篇    下一篇

磁性多孔氧化石墨烯的制备及其对典型磺胺类药物的吸附去除

同凡珂1,2(), 关通1,2, 周双喜1, 王维1()   

  1. 1. 青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海 西宁 810016
    2. 青海大学生态环境工程学院,青海 西宁 810016
  • 收稿日期:2024-10-24 出版日期:2024-12-20 发布日期:2024-12-24
  • 作者简介:

    同凡珂(2003— ),本科。E-mail:

    王维,博士,副研究员。E-mail:

  • 基金资助:
    青海省基础研究计划项目(2023-ZJ-988Q)

Preparation of magnetic porous graphene for the adsorption of typical sulfonamides

Fanke TONG1,2(), Tong GUAN1,2, Shuangxi ZHOU1, Wei WANG1()   

  1. 1. State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
    2. College of Eco-environmental Engineering, Qinghai University, Xining 810016, China
  • Received:2024-10-24 Online:2024-12-20 Published:2024-12-24

摘要:

以四氟对苯二腈(TF)为刚性分子支柱,通过化学插层法制备了多孔氧化石墨烯(GO-TF),并通过机械球磨法将纳米Fe3O4负载到GO-TF上,制备了新型磁性多孔氧化石墨烯(GO-TF/Fe3O4)复合材料。研究了磁性GO-TF/Fe3O4对磺胺嘧啶(SD)的吸附性能,采用吸附动力学模型和等温吸附模型研究了GO-TF/Fe3O4对SD的吸附速率和吸附量。与GO去除SD相比,GO-TF/Fe3O4的吸附去除性能显著提高,饱和吸附量达到106.57 mg/g,表明TF支撑GO纳米片形成了新的吸附孔道,并且球磨后纳米Fe3O4成功嵌入GO-TF上形成了新的吸附位点。研究了溶液pH对材料吸附性能的影响,发现低pH有利于SD的吸附。SD在GO-TF/Fe3O4上的吸附主要涉及π-π作用、氢键作用和静电作用。在5个再生循环内表现出对SD较好的重复吸附性能。

关键词: 刚性分子, 氧化石墨烯, 吸附, 磁性, 磺胺嘧啶

Abstract:

Novel magnetic porous graphene oxide(GO-TF/Fe3O4) composites were prepared by chemically intercalating porous graphene oxide(GO-TF) with tetrafluoroterephthalonitrile(TF) as a rigid molecular backbone and loading nano-Fe3O4 onto GO-TF by mechanical ball milling. The adsorption performance of magnetic GO-TF/Fe3O4 for sulfadiazine(SD) was investigated by using adsorption kinetic models and isothermal models to study the adsorption rate and adsorption capacity of sulfadiazine(SD) on GO-TF/Fe3O4. Compared to the removal of SD by GO,the adsorption removal performance of GO-TF/Fe3O4 was significantly improved, and the saturation adsorption capacity reached 106.57 mg/g, which indicated that new adsorption pores were formed by the TF-supported GO nanosheets and new adsorption sites were formed by the successful embedding of nano Fe3O4 onto GO-TF after ball milling. The effect of solution pH on the adsorption properties of GO-TF/Fe3O4 was also investigated,and it was found that low pH was favorable for SD adsorption. The adsorption of SD on GO-TF/Fe3O4 mainly involved π-π interactions,hydrogen bonding,and electrostatic interactions. Additionally,GO-TF/Fe3O4 showed good reuse performance for SD within 5 cycles.

Key words: rigid molecular, graphene oxide, adsorption, magnetism, sulfadiazine

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