Galaburda Mariia, Chrzanowska Agnieszka, Sternik Dariusz, Zienkiewicz-Strzalka Malgorzata, Derylo-Marczewska Anna
Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Sklodowska Sq.3, 20-031 Lublin, Poland.
Chuiko Institute of Surface Chemistry, 17 General Naumov Str., 03164 Kyiv, Ukraine.
Int J Mol Sci. 2025 May 16;26(10):4770. doi: 10.3390/ijms26104770.
The role of metal additives in the synthesis of composite materials based on the silicon and carbon-containing materials to create the desired structural and adsorption properties is analyzed. A two-step procedure was applied to obtain a series of nanocomposites doped with metal oxides. Various techniques were used to characterize the phase composition and the textural, structural, morphological, and thermal properties of the synthesized materials: X-ray diffraction, scanning electron microscopy, Raman spectroscopy, nitrogen adsorption-desorption, and thermal analysis. The adsorption processes on the obtained nanocomposites were studied for aqueous solutions of aniline, benzoic acid, and phenol. The influence of the metal additives on the formation of carbonaceous structures, the adsorption efficiency, and the adsorption mechanism was determined. The synthesized composites show mesoporous and microporous structures, with varied proportions of both pore types. They are differentiated, taking into account the quality of the carbon material (defect density and degree of graphitization), which decreases in the Co > Ni > Cu > Zn > SiO line. The complex effect of the factors determining the adsorption mechanism and efficiency was investigated: textural, structural, and morphological characteristics and the role of the active metal centers. Generally, the results provide valuable insights into the adaptation of hybrid materials for various industrial applications and underline their versatility.
分析了金属添加剂在基于含硅和碳材料合成复合材料以创造所需结构和吸附性能方面的作用。采用两步法获得了一系列掺杂金属氧化物的纳米复合材料。使用了各种技术来表征合成材料的相组成、织构、结构、形态和热性能：X射线衍射、扫描电子显微镜、拉曼光谱、氮吸附-脱附以及热分析。研究了所得纳米复合材料对苯胺、苯甲酸和苯酚水溶液的吸附过程。确定了金属添加剂对碳质结构形成、吸附效率和吸附机制的影响。合成的复合材料呈现出介孔和微孔结构，两种孔类型的比例各不相同。考虑到碳材料的质量（缺陷密度和石墨化程度）对其进行区分，在Co > Ni > Cu > Zn > SiO序列中，碳材料质量呈下降趋势。研究了决定吸附机制和效率的因素的综合影响：织构、结构和形态特征以及活性金属中心的作用。总体而言，这些结果为混合材料在各种工业应用中的适应性提供了有价值的见解，并突出了它们的多功能性。
