Journal of Inorganic Materials ›› 2023, Vol. 38 ›› Issue (5): 521-528.DOI: 10.15541/jim20220627

Special Issue: 【能源环境】水体污染物去除(202309) 【信息功能】Max层状材料、MXene及其他二维材料(202309)

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Pb (II) Adsorption Process of Fe3O4 Supported Ti3C2Tx

WANG Shiyi1,2(), FENG Aihu2, LI Xiaoyan1(), YU Yun2()   

  1. 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

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

CLC Number: