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<p>Proper handling of radioactive strontium in waste is essential for minimizing its environmental and health risks. This study investigates the performance of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>, a typical MXene, in removing Sr<sup>2+</sup> from wastewater. The experimental results indicate that the adsorption confirms to the pseudo-first-order kinetic model and the Langmuir isotherm model. The <i>∆H</i><sup><i>θ</i></sup> of adsorption is −&#xa0;129.56&#xa0;kJ&#xa0;mol<sup>−1</sup>. Density Functional Theory (DFT) calculations were employed to examine the molecular-level interaction mechanism between Sr and Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>, which primarily involves chemical interactions between Sr<sup>2+</sup> and the terminal groups of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>. This study highlights the potential of MXene in the removal of radioactive contaminants.</p>

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Removal of strontium from wastewater by Ti3C2Tx MXene: insights from experimental and theoretical studies

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Xin Yang,
  • Kun-Ming Zhang,
  • Nan Li,
  • Yan Ma,
  • Zhen-Feng Tong,
  • Tao Chen

摘要

Proper handling of radioactive strontium in waste is essential for minimizing its environmental and health risks. This study investigates the performance of Ti3C2Tx, a typical MXene, in removing Sr2+ from wastewater. The experimental results indicate that the adsorption confirms to the pseudo-first-order kinetic model and the Langmuir isotherm model. The ∆Hθ of adsorption is − 129.56 kJ mol−1. Density Functional Theory (DFT) calculations were employed to examine the molecular-level interaction mechanism between Sr and Ti3C2Tx, which primarily involves chemical interactions between Sr2+ and the terminal groups of Ti3C2Tx. This study highlights the potential of MXene in the removal of radioactive contaminants.