de Mello Jonatan Rafael, Machado Thaís Strieder, Crestani Larissa, Alessandretti Ingridy, Marchezi Giovana, Melara Flávia, Mignoni Marcelo Luis, Piccin Jeferson Steffanello
Postgraduate in Food Science and Technology, Faculty of Agronomy and Veterinary Medicine, University of Passo Fundo, BR 285, km 171, Passo Fundo, RS, Brazil.
Postgraduate in Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, km 171, Passo Fundo, RS, Brazil.
Heliyon. 2022 May 17;8(5):e09444. doi: 10.1016/j.heliyon.2022.e09444. eCollection 2022 May.
In this work, new adsorbent composites from the silica precursor tetraethyl orthosilicate (TEOS) and chitosan have been successfully synthesized, denominated 20%Chi, 30%Chi and 40%Chi. The composites presented enhanced chemical and physical characteristics, with emphasis on the high surface areas between 374.94 m/g to 886.31 m/g. The application of the composites in the model system (TY - Tartrazine yellow dye), presented adsorption capacities dependent on the amount of chitosan in the composite (40%Chi > 30%Chi > 20%Chi). However, from the experimental data of the constituent materials, 30%Chi provided the greatest increase in the adsorption capacity in the monolayer, with values of 36%. This demonstrates that the amount of chitosan in the compound alters the arrangement of adsorption sites. The 30%Chi composite presented life cycle superior to 10 reuse cycles.
在本研究中，成功合成了由二氧化硅前驱体正硅酸四乙酯（TEOS）和壳聚糖组成的新型吸附剂复合材料，分别命名为20%Chi、30%Chi和40%Chi。这些复合材料具有增强的化学和物理特性，尤其是具有374.94 m²/g至886.31 m²/g之间的高比表面积。该复合材料在模型体系（TY - 酒石黄染料）中的应用表明，其吸附容量取决于复合材料中壳聚糖的含量（40%Chi > 30%Chi > 20%Chi）。然而，从组成材料的实验数据来看，30%Chi在单层吸附容量方面的增加最大，增幅为36%。这表明化合物中壳聚糖的含量会改变吸附位点的排列。30%Chi复合材料的生命周期优于10次重复使用循环。
