Bushuev Yuriy G
Institute of Chemistry, University of Silesia in Katowice, 40-006 Katowice, Poland.
Nano Lett. 2025 Feb 26;25(8):3351-3356. doi: 10.1021/acs.nanolett.5c00058. Epub 2025 Feb 17.
Hierarchical nanoporous particles combine properties of microporous and mesoporous materials that are widely exploited for energy storage and conversion, separation of gases and liquids, water purification and desalination, fabrication of nanodevices, etc. Hierarchical meso/microporous level-2 and level-3 Menger sponge particles immersed in water were investigated using computer simulation methods to demonstrate a synergetic effect of additional porosity on the wettability of materials. The Menger sponge is an object with a fractal dimension. At each level, the particles are composed of the same structural blocks. The hydrophobicity of the blocks was shown to depend on their size and position in the nanoparticles. The additional porosity decreases the hydrophobicity of the particles due to the partial breaking of hydrogen bonds between water molecules in the pores. This effect can be used to tune and modify the hydrophobicity and wettability of bulky porous materials, nanoparticles, and nanostructured surfaces.
分级纳米多孔颗粒结合了微孔和介孔材料的特性，这些特性在能量存储与转换、气体和液体分离、水净化与脱盐、纳米器件制造等方面得到了广泛应用。使用计算机模拟方法研究了浸入水中的分级介孔/微孔二级和三级门格尔海绵颗粒，以证明额外孔隙率对材料润湿性的协同效应。门格尔海绵是一种具有分形维数的物体。在每个级别，颗粒都由相同的结构块组成。已表明这些块的疏水性取决于它们在纳米颗粒中的大小和位置。由于孔隙中水分子之间氢键的部分断裂，额外的孔隙率降低了颗粒的疏水性。这种效应可用于调节和改变块状多孔材料、纳米颗粒和纳米结构表面的疏水性和润湿性。
