Ruiz-Hitzky Eduardo, Ounis Mabrouka, Younes Mohamed Kadri, Pérez-Carvajal Javier
Materials Science Institute of Madrid (ICMM-CSIC), c/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
Laboratory of Materials Chemistry and Catalysis, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis 2092, Tunisia.
Materials (Basel). 2024 Aug 29;17(17):4273. doi: 10.3390/ma17174273.
Layered TiCT MXene has been successfully intercalated and exfoliated with the simultaneous generation of a 3D silica network by treating its cationic surfactant intercalation compound (MXene-CTAB) with an alkoxysilane (TMOS), resulting in a MXene-silica nanoarchitecture, which has high porosity and specific surface area, together with the intrinsic properties of MXene (e.g., photothermal response). The ability of these innovative MXene silica materials to induce thermal activation reactions of previously adsorbed compounds is demonstrated here using NIR laser irradiation. For this purpose, the pinacol rearrangement reaction has been selected as a first model example, testing the effectiveness of NIR laser-assisted photothermal irradiation in these processes. This work shows that TiCT-based nanoarchitectures open new avenues for applications that rely on the combined properties inherent to their integrated nanocomponents, which could be extended to the broader MXene family.
通过用烷氧基硅烷（TMOS）处理其阳离子表面活性剂插层化合物（MXene-CTAB），成功地将层状TiCT MXene进行了插层和剥离，同时生成了三维二氧化硅网络，从而得到了具有高孔隙率和比表面积以及MXene固有特性（如光热响应）的MXene-二氧化硅纳米结构。本文利用近红外激光照射展示了这些创新的MXene二氧化硅材料诱导先前吸附化合物的热活化反应的能力。为此，选择了频哪醇重排反应作为第一个模型示例，测试近红外激光辅助光热照射在这些过程中的有效性。这项工作表明，基于TiCT的纳米结构为依赖其集成纳米组件固有综合性能的应用开辟了新途径，这可能会扩展到更广泛的MXene家族。
