In modern methods of synthesis of nanostructured materials based on mesoporous silica matrices (MCM-41, SBA-15), it is not possible to simultaneously fine adjust both the pore diameter and the thickness of the separating walls. This article presents the results of work on the creation of composites based on mesoporous silica matrices MCM-41 and SBA-15, reinforced with metallic Fe nanoparticles (Fe NPs). The article considers a new way of ultrafine regulation of the pore radius and separating wall thickness mesoporous silica SBA-15. In this work, we studied the changes in their structural and magnetic characteristics by directionally adjusting the geometric parameters of the porous structure of the initial matrices. The following methods are applied to adjust the silica pore parameters: hydrothermal treatment and templating using a micellar expander. The technique is based on building up aluminum-oxygen nanolayers on the pore walls using gas-phase atomic layer deposition technique (ALD). Studying room-temperature magnetization of Fe NPs obtained during the synthesis in a matrix of mesoporous silica MCM-41 (pore size of 3–5 nm) allowed us to establish superparamagnetic properties of such magnetic materials, which allows to use them in medicine for targeted drug delivery. Fe NPs in the mesoporous silica SBA-15 matrix with a pore size of 3–6 nm also exhibit superparamagnetic properties, and these composites showed a coercive force increase with an increase in the original matrix pore size.

在基于中孔二氧化硅基质的现代合成纳米结构材料的方法（MCM-41，SBA-15）中，不可能同时细调孔径和分隔壁的厚度。本文介绍了基于介孔二氧化硅基质MCM-41和SBA-15并用金属纳米铁颗粒（Fe NPs）增强的复合材料的制备结果。本文考虑了一种超细调节孔半径和分离壁厚的中孔二氧化硅SBA-15的新方法。在这项工作中，我们通过定向调整初始矩阵的多孔结构的几何参数，研究了它们的结构和磁特性的变化。采用以下方法来调整二氧化硅孔隙参数：水热处理和使用胶束膨胀剂的模板。该技术基于使用气相原子层沉积技术（ALD）在孔壁上建立铝氧纳米层的技术。对在介孔二氧化硅MCM-41（孔径为3-5 nm）基质中合成过程中获得的Fe NP的室温磁化进行研究，使我们能够建立此类磁性材料的超顺磁性能，从而可以将其用于靶向药物药物输送。孔径为3–6 nm的中孔二氧化硅SBA-15基质中的Fe NPs也表现出超顺磁性，这些复合材料的矫顽力随原始基质孔径的增加而增加。对在介孔二氧化硅MCM-41（孔径为3-5 nm）基质中合成过程中获得的Fe NP的室温磁化强度进行研究，使我们能够建立此类磁性材料的超顺磁性能，从而可以将其用于靶向药物药物输送。孔径为3–6 nm的中孔二氧化硅SBA-15基质中的Fe NPs也表现出超顺磁性，这些复合材料显示出矫顽力随原始基质孔径的增加而增加。对在介孔二氧化硅MCM-41（孔径为3-5 nm）基质中合成过程中获得的Fe NP的室温磁化强度进行研究，使我们能够建立此类磁性材料的超顺磁性能，从而可以将其用于靶向药物药物输送。孔径为3–6 nm的中孔二氧化硅SBA-15基质中的Fe NPs也表现出超顺磁性，这些复合材料的矫顽力随原始基质孔径的增加而增加。