Exfoliation of Methylamine and n-Butylamine Derivatives of Layered Perovskite-Like Oxides HLnTiO4 and H2Ln2Ti3O10 (Ln = La, Nd) into Nanolayers

The ability of layered perovskite-like titanates HLnTiO 4 and H 2 Ln 2 Ti 3 O 10 (Ln = La, Nd) to exfoliate into nanosheets in aqueous media under various conditions has been studied. Along with protonated titanates, their inorganic-organic hybrids with methylamine and n -butylamine were used as precursors for lamination. Exfoliation was carried out according to chemical and physical-chemical strategies, including stirring of initial compounds in diluted aqueous tetrabutylammonium hydroxide solution and sonication of the same mixtures, respectively. It was demonstrated that among the compounds under consideration, the methylamine derivative exfoliation degree is the highest. Successful obtainment of nanolayers with linear sizes of 30–100 nm for all the titanates considered was confirmed.