The application of two-dimensional metal carbides (MXenes) in heavy metal processing has attracted more and more attention. In this experiment, using titanium carbide as a 2D platform, an atomic-scale 2D/2D adsorbent alk-MXene/LDH was constructed by in situ mechanical self-assembly and alkali-level intercalation to remove Ni²⁺. Due to its unique layered structure, the oxidized functional groups and available active binding sites of MXene nanoplatelets constitute a unique adsorbent for removing heavy metals in water. The adsorption capacity of alk-MXene/LDH adsorbent for Ni²⁺ was 222.717 mg/g. The efficiency of Ni²⁺ was 97.35%, and the synthesized material could efficiently remove Ni²⁺ under a wide range of pH conditions (pH = 5–13). The adsorption behavior was studied using Redlich-Peterson adsorption isotherms, pseudo-second-order kinetics and thermodynamic models. In this study, the adsorbent exhibited excellent reproducibility after 8 adsorption-desorption cycles. According to the experimental results and various characterizations, the mechanism of the adsorbent was revealed. This study indicates that the atomic scale 2D/2D large basal plane has great potential in adsorbents.

二维金属碳化物（MXenes）在重金属加工中的应用已引起越来越多的关注。在该实验中，使用碳化钛作为2D平台，通过原位机械自组装和碱级插层去除Ni ²⁺，构建了原子级2D / 2D吸附剂alk-MXene / LDH 。由于其独特的分层结构，MXene纳米片的氧化官能团和可用的活性结合位点构成了用于去除水中重金属的独特吸附剂。alk-MXene / LDH吸附剂对Ni ²⁺的吸附容量为222.717 mg / g。Ni ²⁺的效率为97.35％，合成材料可以有效去除Ni ²⁺在各种pH条件下（pH = 5–13）。使用Redlich-Peterson吸附等温线，伪二级动力学和热力学模型研究了吸附行为。在这项研究中，吸附剂在8个吸附-解吸循环后表现出优异的重现性。根据实验结果和各种表征，揭示了吸附剂的机理。这项研究表明，原子尺度的2D / 2D大基面在吸附剂中具有很大的潜力。