De León-Ramírez Jesús Isaías, Reyes Villegas Víctor Alfredo, Pérez-Sicairos Sergio, Chávez Méndez José Román, Chávez-Rivas Fernando, Yocupicio-Gaxiola Rosario Isidro, Petranovskii Vitalii
Centro de Nanociencias y Nanotecnología (CNyN) - Universidad Nacional Autónoma de México (UNAM), Ensenada, Baja California, México.
Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, México.
PLoS One. 2025 Jun 20;20(6):e0324997. doi: 10.1371/journal.pone.0324997. eCollection 2025.
LTA zeolite is known for its straightforward synthesis and well-defined structure, composed of α and β cages. This structure offers a versatile platform for hosting molecules of varying sizes. In the sodic form (NaA), the Na⁺ ions are located within these cages' cation exchange sites. When substituted with zinc species, a precise tuning of pore size and properties can emerge. In this study, we employed an eco-friendly post-synthesis modification of a NaA zeolite with zinc species: ZnO, ZnO₂, and Zn(OH)₂ by a sono-assisted deposition method. This approach allowed a short deposition time (30 min), providing control over the desired Zn species incorporated into NaA zeolite. Equally, the facile selective integration of zinc species in the form of supported nanoparticles and Zn2+ in cation exchange sites modified the physicochemical properties of the material, including unique surface charge redistribution and pore architectures. These results highlight the potential of sono-assisted deposition as an alternative strategy for engineering advanced zeolitic materials, opening new avenues for innovative applications in catalysis, adsorption, and beyond.
LTA 沸石以其简单的合成方法和明确的结构而闻名，它由α和β笼组成。这种结构为容纳不同大小的分子提供了一个多功能平台。在钠型（NaA）中，Na⁺离子位于这些笼的阳离子交换位点内。当用锌物种取代时，可以实现孔径和性能的精确调节。在本研究中，我们采用了一种环保的后合成方法，通过声辅助沉积法用锌物种（ZnO、ZnO₂和Zn(OH)₂）对NaA沸石进行改性。这种方法沉积时间短（30分钟），能够控制掺入NaA沸石中的所需锌物种。同样，以负载型纳米颗粒形式的锌物种和阳离子交换位点中的Zn²⁺的简便选择性整合改变了材料的物理化学性质，包括独特的表面电荷重新分布和孔结构。这些结果突出了声辅助沉积作为一种工程先进沸石材料的替代策略的潜力，为催化、吸附等创新应用开辟了新途径。
