TY - JOUR

T1 - Synthesis of Organic-Inorganic Hybrids Based on Perovskite-like Bismuth Titanate H2K0.5Bi2.5Ti4O13·H2O and n-Alkylamines

AU - Minich, Iana A.

AU - Silyukov, Oleg I.

AU - Gak, Veronika V.

AU - Borisov, Evgeny V.

AU - Zvereva, Irina A.

N1 - Funding Information: This study was supported by the Russian Foundation for Basic Research (grant no. 18-03-00915). I.A.M. also thank the Russian Foundation for Basic Research for its financial support (grant no. 19-33-90050). The authors are also grateful to Saint Petersburg State University Research Park: Center for X-ray Diffraction Studies, Center for Optical and Laser Materials Research, Center for Chemical Analysis and Materials Research, Center for Thermal Analysis and Calorimetry, Magnetic Resonance Research Centre, Interdisciplinary Center for Nanotechnology, and SDBSWeb: https://sdbs.db.aist.go.jp (National Institute of Advanced Industrial Science and Technology). Publisher Copyright: Copyright © 2020 American Chemical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/4/14

Y1 - 2020/4/14

N2 - New organic-inorganic hybrids have been synthesized by the intercalation of n-alkylamines (methylamine, ethylamine, n-propylamine, n-butylamine, n-hexylamine, and n-octylamine) into the structure of the protonated and hydrated form of the perovskite-like layered titanate H2K0.5Bi2.5Ti4O13·H2O (HKBT4·H2O). The possibility of the synthesis of the hybrid materials was studied in a wide range of conditions. It was found that interlayer water plays a crucial role in the formation of intercalated hybrids. The obtained compounds were characterized with powder X-ray diffraction analysis; Raman, IR, and NMR spectroscopies; thermogravimetry (TG), TG coupled with mass spectrometry, and CHN analyses; and scanning electron microscopy. It was suggested that the intercalated n-alkylamines exist in the form of alkylammonium ions forming a paraffin-like bilayer with an average tilting angle of ∼77.5°. The obtained HKBT4×RNH2 compounds contain 0.4-0.7 n-alkylamine molecules per formula unit as well as the varied amount of intercalated water. By gentle heating, they can be obtained as dehydrated forms, which are thermally stable up to 250 °C.

AB - New organic-inorganic hybrids have been synthesized by the intercalation of n-alkylamines (methylamine, ethylamine, n-propylamine, n-butylamine, n-hexylamine, and n-octylamine) into the structure of the protonated and hydrated form of the perovskite-like layered titanate H2K0.5Bi2.5Ti4O13·H2O (HKBT4·H2O). The possibility of the synthesis of the hybrid materials was studied in a wide range of conditions. It was found that interlayer water plays a crucial role in the formation of intercalated hybrids. The obtained compounds were characterized with powder X-ray diffraction analysis; Raman, IR, and NMR spectroscopies; thermogravimetry (TG), TG coupled with mass spectrometry, and CHN analyses; and scanning electron microscopy. It was suggested that the intercalated n-alkylamines exist in the form of alkylammonium ions forming a paraffin-like bilayer with an average tilting angle of ∼77.5°. The obtained HKBT4×RNH2 compounds contain 0.4-0.7 n-alkylamine molecules per formula unit as well as the varied amount of intercalated water. By gentle heating, they can be obtained as dehydrated forms, which are thermally stable up to 250 °C.

KW - LAYERED PEROVSKITE

KW - INTERLAYER SURFACE

KW - PHOTOCATALYTIC ACTIVITY

KW - INTERCALATION BEHAVIOR

KW - OXIDES

KW - EXFOLIATION

KW - DERIVATIVES

KW - NANOSHEETS

KW - ALCOHOLS

KW - CS

UR - http://www.scopus.com/inward/record.url?scp=85082877567&partnerID=8YFLogxK

U2 - 10.1021/acsomega.0c00424

DO - 10.1021/acsomega.0c00424

M3 - Article

AN - SCOPUS:85082877567

VL - 5

SP - 8158

EP - 8168

JO - ACS Omega

JF - ACS Omega

SN - 2470-1343

IS - 14

ER -