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无机材料学报

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2023 , Vol. 38 >Issue 5: 521 - 528

DOI: https://doi.org/10.15541/jim20220627

研究论文

Fe3O4负载Ti3C2Tx对Pb(II)的吸附性能研究

  • 王世怡 ,
  • 冯爱虎 ,
  • 李晓燕 ,
  • 于云
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  • 1.上海理工大学 材料与化学学院, 上海200093
    2.中国科学院 上海硅酸盐研究所, 中国科学院特种无机涂层重点实验室, 上海 201899
王世怡(1996-), 女, 硕士研究生. E-mail: wsysues051115114@163.com
李晓燕, 副教授. E-mail: lixiaoyan@usst.edu.cn;
于 云, 研究员. E-mail: yunyush@mail.sic.ac.cn

收稿日期: 2022-10-25

  修回日期: 2022-12-02

  网络出版日期: 2023-01-11

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Pb (II) Adsorption Process of Fe3O4 Supported Ti3C2Tx

  • WANG Shiyi ,
  • FENG Aihu ,
  • LI Xiaoyan ,
  • YU Yun
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  • 1. School of Material and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
    2. Key Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
WANG Shiyi (1996-), female, Master candidate. E-mail: wsysues051115114@163.com
LI Xiaoyan, associate professor. E-mail: lixiaoyan@usst.edu.cn;
YU Yun, professor. E-mail: yunyush@mail.sic.ac.cn

Received date: 2022-10-25

  Revised date: 2022-12-02

  Online published: 2023-01-11

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摘要

Ti3C2Tx MXene材料具有二维层状结构及丰富的表面官能团, 是一种非常有潜力的重金属离子吸附材料, 但其层间距较小, 且在水溶液中的稳定性较差。本工作探索了Ti3C2Tx的改性策略, 提高其化学稳定性与离子吸附容量, 利用一步水热方法制备出不同Fe3O4掺杂量的Fe3O4-Ti3C2Tx(FeMX)复合吸附剂材料。研究结果表明：FeMX吸附剂对Pb(II)的理论饱和吸附量可达到210.54 mg/g。研究进一步揭示了FeMX材料对Pb(II)离子的吸附机理, Fe3O4纳米颗粒均匀分散、插层在Ti3C2Tx纳米片层间, 有效增加了Ti3C2Tx纳米片的比表面积与层间距, 提高了对Pb(II)的去除能力。本研究可为发展优异重金属离子吸附特性的MXene基复合材料提供基础数据。

关键词： Mxene; Fe3O4纳米颗粒; 重金属离子吸附; 稳定性

本文引用格式

王世怡 , 冯爱虎 , 李晓燕 , 于云 . Fe3O4负载Ti3C2Tx对Pb(II)的吸附性能研究[J]. 无机材料学报, 2023 , 38(5) : 521 -528 . DOI: 10.15541/jim20220627

Abstract

Ti3C2Tx MXene is a potential adsorbent of heavy metal ions due to its two-dimensional layered structure and abundant surface functional groups. However, it has disadvantages of limited layer spacing and poor stability in aqueous solution. Here, the modification strategy of Ti3C2Tx was explored to improve its chemical stability and ion adsorption capacity among which Fe3O4-Ti3C2Tx(FeMX) adsorbent with different doping amounts of Fe3O4 were prepared by one-step hydrothermal method. The results showed that the maximum theoretical Pb(II) adsorption capacity of FeMX adsorbent could reach 210.54 mg/g. Its adsorption mechanism was further revealed that Fe3O4 nanoparticles were evenly dispersed and intercalated between Ti3C2Tx nanosheets, which effectively increased specific surface area and layer spacing of Ti3C2Tx nanosheets, leading to improving Pb(II) removal ability. Therefore, this study provides a promising route for developing MXene matrix composites with excellent heavy metal ion adsorption properties.

Key words： MXene; Fe3O4 nanoparticle; heavy metal ion adsorption; stability

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