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Two-Dimensional Titanium Carbides (Ti 3 C 2 T x ) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium

Author

Listed:
  • Linfeng Jin

    (School of Metallurgy and Environment, Central South University, Changsha 410083, China)

  • Liyuan Chai

    (School of Metallurgy and Environment, Central South University, Changsha 410083, China
    Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
    Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China)

  • Weichun Yang

    (School of Metallurgy and Environment, Central South University, Changsha 410083, China
    Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
    Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China)

  • Haiying Wang

    (School of Metallurgy and Environment, Central South University, Changsha 410083, China
    Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
    Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410004, China)

  • Liyuan Zhang

    (Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany)

Abstract

Titanium carbides (MXenes) are promising multifunctional materials. However, the negative surface charge and layer-by-layer restacking of MXenes severely restrict their application in the field of anionic pollutants, including in hexavalent chromium (Cr(VI)). Herein, Ti 3 C 2 T x MXenes was functionalized through in situ polymerization and intercalation of poly(m-phenylenediamine) (PmPD), then Ti 3 C 2 T x /PmPD composites were obtained. Delightedly, Ti 3 C 2 T x /PmPD composites exhibited positive surface charge, expanded interlayer spacing, and enhanced hydrophobicity. Furthermore, the specific surface area of Ti 3 C 2 T x /PmPD composite was five and 23 times that of Ti 3 C 2 T x and PmPD, respectively. These advantages endowed Ti 3 C 2 T x /PmPD composite with an excellent adsorption capacity of Cr(VI) (540.47 mg g −1 ), which was superior to PmPD (384.73 mg g −1 ), Ti 3 C 2 T x MXene (137.45 mg g −1 ), and the reported MXene-based adsorbents. The Cr(VI) removal mechanism mainly involved electrostatic adsorption, reduction, and chelation interaction. This study developed a simple functionalization strategy, which would greatly explore the potential of MXenes in the field of anionic pollutants.

Suggested Citation

  • Linfeng Jin & Liyuan Chai & Weichun Yang & Haiying Wang & Liyuan Zhang, 2019. "Two-Dimensional Titanium Carbides (Ti 3 C 2 T x ) Functionalized by Poly(m-phenylenediamine) for Efficient Adsorption and Reduction of Hexavalent Chromium," IJERPH, MDPI, vol. 17(1), pages 1-13, December.
    • Handle: RePEc:gam:jijerp:v:17:y:2019:i:1:p:167-:d:301899
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    References listed on IDEAS

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    1. Bin Zhou & Daoyou Huang & Jinshui Wu & Qihong Zhu & Hanhua Zhu, 2018. "Horizontal and Vertical Distributions of Chromium in a Chromate Production District of South Central China," IJERPH, MDPI, vol. 15(4), pages 1-15, March.
    2. Adriana Estokova & Lenka Palascakova & Maria Kanuchova, 2018. "Study on Cr(VI) Leaching from Cement and Cement Composites," IJERPH, MDPI, vol. 15(4), pages 1-13, April.
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    Cited by:

    1. Ming-hao Li & Xue-yan Gao & Can Li & Chun-long Yang & Chang-ai Fu & Jie Liu & Rui Wang & Lin-xu Chen & Jian-qiang Lin & Xiang-mei Liu & Jian-qun Lin & Xin Pang, 2020. "Isolation and Identification of Chromium Reducing Bacillus Cereus Species from Chromium-Contaminated Soil for the Biological Detoxification of Chromium," IJERPH, MDPI, vol. 17(6), pages 1-13, March.

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