Minich Iana A, Silyukov Oleg I, Kurnosenko Sergei A, Gak Veronika V, Kalganov Vladimir D, Kolonitskiy Petr D, Zvereva Irina A
Department of Chemical Thermodynamics and Kinetics, Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia.
Interdisciplinary Resource Centre for Nanotechnology, Saint Petersburg State University, 199034 Saint Petersburg, Russia.
Nanomaterials (Basel). 2021 Oct 14;11(10):2708. doi: 10.3390/nano11102708.
In the present work, we report the results on exfoliation and coating formation of inorganic-organic hybrids based on the layered perovskite-like bismuth titanate HKBiTiO·HO that could be prepared by a simple ion exchange reaction from a Ruddlesden-Popper phase KBiTiO. The inorganic-organic hybrids were synthesized by intercalation reactions. Exfoliation into nanosheets was performed for the starting hydrated protonated titanate and for the derivatives intercalated by alkylamines to study the influence of preliminary intercalation on exfoliation efficiency. The selected precursors were exfoliated in aqueous solutions of tetrabutylammonium hydroxide using facile stirring and ultrasonication. The suspensions of nanosheets obtained were characterized using UV-vis spectrophotometry, dynamic light scattering, inductively coupled plasma spectroscopy, and gravimetry. Nanosheets were coated on preliminarily polyethyleneimine-covered Si substrates using a self-assembly procedure and studied using atomic force and scanning electron microscopy.
在本工作中，我们报告了基于层状钙钛矿型钛酸铋HKBiTiO·HO的无机-有机杂化物的剥离和涂层形成结果，该杂化物可通过简单的离子交换反应从Ruddlesden-Popper相KBiTiO制备。无机-有机杂化物通过插层反应合成。对起始的水合质子化钛酸盐以及通过烷基胺插层的衍生物进行剥离成纳米片的操作，以研究预插层对剥离效率的影响。所选的前驱体在氢氧化四丁铵水溶液中通过简便搅拌和超声处理进行剥离。使用紫外-可见分光光度法、动态光散射、电感耦合等离子体光谱法和重量分析法对所得纳米片悬浮液进行表征。使用自组装程序将纳米片涂覆在预先用聚乙烯亚胺覆盖的硅基板上，并使用原子力显微镜和扫描电子显微镜进行研究。
