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<p>Unlocking the full potential of MXenes for practical applications requires delamination methods that are scalable, robust, and both cost- and time-efficient for large-scale production. Equally important is ensuring that the delaminated MXene is compatible with surface functionalization strategies that enhance oxidation stability, enable tunable dispersion in diverse solvents, and allow precise control over physicochemical properties. Here we demonstrate high-pressure homogenization (HPH) as an effective, rapid, scalable method to delaminate multilayer Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> (T<sub><i>x</i></sub> = -OH, -O, -F, etc.) MXene into few-layer nanosheets. Exfoliation efficiency is tuned via the number of HPH passes, leveraging combined shear, cavitation, and impact forces—eliminating chemical intercalants, washing steps, and reducing material waste. The delaminated MXenes are functionalized using two catechol-based ligands: polycatechol and catechol-grafted polyvinylpyrrolidone. Enhanced delamination improves functionalization efficiency by increasing surface accessibility. Notably, HPH-delaminated MXene shows no oxidation post-exfoliation but exhibits slight oxidation during functionalization. This work lays the foundation for optimizing scalable delamination and functionalization processes, critical for advancing MXene applications.</p><p></p>

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Scalable delamination of multilayer MXene via high-pressure homogenization and subsequent surface functionalization

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月12日

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  • Young Ho Park,
  • Seonjae Kim,
  • Jiseok Ha,
  • Hyuk Choi,
  • Ijin Yun,
  • Chaelin Shin,
  • B. Yamunasree,
  • Daehwan Cho,
  • Jeevan Kumar Reddy Modigunta,
  • Taewoong Lee,
  • Ju Hyun Oh,
  • Soorathep Kheawhom,
  • G. Murali,
  • Seung Jun Lee,
  • Insik In

摘要

Unlocking the full potential of MXenes for practical applications requires delamination methods that are scalable, robust, and both cost- and time-efficient for large-scale production. Equally important is ensuring that the delaminated MXene is compatible with surface functionalization strategies that enhance oxidation stability, enable tunable dispersion in diverse solvents, and allow precise control over physicochemical properties. Here we demonstrate high-pressure homogenization (HPH) as an effective, rapid, scalable method to delaminate multilayer Ti3C2Tx (Tx = -OH, -O, -F, etc.) MXene into few-layer nanosheets. Exfoliation efficiency is tuned via the number of HPH passes, leveraging combined shear, cavitation, and impact forces—eliminating chemical intercalants, washing steps, and reducing material waste. The delaminated MXenes are functionalized using two catechol-based ligands: polycatechol and catechol-grafted polyvinylpyrrolidone. Enhanced delamination improves functionalization efficiency by increasing surface accessibility. Notably, HPH-delaminated MXene shows no oxidation post-exfoliation but exhibits slight oxidation during functionalization. This work lays the foundation for optimizing scalable delamination and functionalization processes, critical for advancing MXene applications.