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Phase-controlled surface engineering of MoS₂/MXene heterostructures for enhanced capacitive deionization performance.

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Title: Phase-controlled surface engineering of MoS₂/MXene heterostructures for enhanced capacitive deionization performance.
Authors: Ho, Ying-Rong1 (AUTHOR), Hsieh, Cheng-En2 (AUTHOR), Huang, Jung-Jie1 (AUTHOR) jjhuang@asia.edu.tw
Source: Surface & Coatings Technology. Jul2026, Vol. 532, pN.PAG-N.PAG. 1p.
Subjects: Molybdenum disulfide, MXenes, Hydrothermal synthesis, Nanocomposite materials, Phase transitions, Saline water conversion, Electrode performance, Adsorption capacity
Abstract: This study reports the strategic development of MoS 2 /MXene nanocomposites as high-efficiency electrodes for capacitive deionization (CDI) applications. The MXene synthesized via selective etching of MAX, provides a conductive, layered framework that facilitates rapid ion transport and expansive adsorption interfaces. To optimize electrochemical activity and structural integrity, layered MoS 2 was integrated into the MXene substrate through a high-pressure hydrothermal route. The influence of MoS 2 loading was systematically investigated by modulating the precursor molar ratios. Furthermore, nitrogen annealing at varying temperatures was employed to control the crystalline phase of MoS 2 , driving the transition from a metastable 1 T/2H mixed phase to a stable 2H phase, thereby enhancing both charge storage capacity and material durability. Experimental results demonstrate that optimized thermal treatment significantly improved the specific capacitance from 13.42 to 20.06 F/g, while the desalination efficiency increased from 4.63% to 10.86%. Notably, the composite electrode exhibited a robust salt adsorption capacity of 39.38 mg/g and maintained a high retention rate of 96.62% over 50 consecutive cycles. These findings highlight the potential of MoS 2 /MXene heterostructures as a superior material platform for next-generation, high-stability desalination technologies. • MoS 2 /MXene heterostructures synthesized by hydrothermal method. • MoS 2 phase transition from 1 T/2H to 2H after N 2 annealing at 850 °C. • High salt adsorption capacity (SAC) of 39.38 mg/g is achieved. • Excellent stability with 96.62% retention over 50 cycles. [ABSTRACT FROM AUTHOR]
Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 194252947
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  Label: Title
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  Data: Phase-controlled surface engineering of MoS₂/MXene heterostructures for enhanced capacitive deionization performance.
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  Data: <searchLink fieldCode="AR" term="%22Ho%2C+Ying-Rong%22">Ho, Ying-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hsieh%2C+Cheng-En%22">Hsieh, Cheng-En</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Jung-Jie%22">Huang, Jung-Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jjhuang@asia.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22Surface+%26+Coatings+Technology%22">Surface & Coatings Technology</searchLink>. Jul2026, Vol. 532, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Molybdenum+disulfide%22">Molybdenum disulfide</searchLink><br /><searchLink fieldCode="DE" term="%22MXenes%22">MXenes</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrothermal+synthesis%22">Hydrothermal synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Nanocomposite+materials%22">Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Saline+water+conversion%22">Saline water conversion</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+performance%22">Electrode performance</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+capacity%22">Adsorption capacity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study reports the strategic development of MoS 2 /MXene nanocomposites as high-efficiency electrodes for capacitive deionization (CDI) applications. The MXene synthesized via selective etching of MAX, provides a conductive, layered framework that facilitates rapid ion transport and expansive adsorption interfaces. To optimize electrochemical activity and structural integrity, layered MoS 2 was integrated into the MXene substrate through a high-pressure hydrothermal route. The influence of MoS 2 loading was systematically investigated by modulating the precursor molar ratios. Furthermore, nitrogen annealing at varying temperatures was employed to control the crystalline phase of MoS 2 , driving the transition from a metastable 1 T/2H mixed phase to a stable 2H phase, thereby enhancing both charge storage capacity and material durability. Experimental results demonstrate that optimized thermal treatment significantly improved the specific capacitance from 13.42 to 20.06 F/g, while the desalination efficiency increased from 4.63% to 10.86%. Notably, the composite electrode exhibited a robust salt adsorption capacity of 39.38 mg/g and maintained a high retention rate of 96.62% over 50 consecutive cycles. These findings highlight the potential of MoS 2 /MXene heterostructures as a superior material platform for next-generation, high-stability desalination technologies. • MoS 2 /MXene heterostructures synthesized by hydrothermal method. • MoS 2 phase transition from 1 T/2H to 2H after N 2 annealing at 850 °C. • High salt adsorption capacity (SAC) of 39.38 mg/g is achieved. • Excellent stability with 96.62% retention over 50 cycles. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.surfcoat.2026.133616
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Molybdenum disulfide
        Type: general
      – SubjectFull: MXenes
        Type: general
      – SubjectFull: Hydrothermal synthesis
        Type: general
      – SubjectFull: Nanocomposite materials
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Saline water conversion
        Type: general
      – SubjectFull: Electrode performance
        Type: general
      – SubjectFull: Adsorption capacity
        Type: general
    Titles:
      – TitleFull: Phase-controlled surface engineering of MoS₂/MXene heterostructures for enhanced capacitive deionization performance.
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            NameFull: Ho, Ying-Rong
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            NameFull: Hsieh, Cheng-En
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            NameFull: Huang, Jung-Jie
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            – D: 15
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 532
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            – TitleFull: Surface & Coatings Technology
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