Isolation and characterization of nanosheets containing few layers of the Aurivillius family of oxides and metal-organic compounds

Journal Article · Wed Apr 15 00:00:00 EDT 2015 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2014.02.020· OSTI ID:22475553

Sreedhara, M. B.; Prasad, B. E.; Moirangthem, Monali ^[1]; Murugavel, R. ^[2]; Rao, C. N.R., ^[1]

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1. Chemistry and Physics of Materials Unit, New Chemistry Unit, International Centre for Materials Science and Sheik Saqr Laboratory, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064 (India)
2. Department of Chemistry, Indian Institute of Technology–Bombay, Powai, Mumbai 400076 (India)

Nanosheets containing few-layers of ferroelectric Aurivillius family of oxides, Bi{sub 2}A{sub n−1}B{sub n}O{sub 3n+3} (where A=Bi{sup 3+}, Ba{sup 2+} etc. and B=Ti{sup 4+}, Fe{sup 3+} etc.) with n=3, 4, 5, 6 and 7 have been prepared by reaction with n-butyllithium, followed by exfoliation in water. The few-layer samples have been characterized by Tyndall cones, atomic force microscopy, optical spectroscopy and other techniques. The few-layer species have a thickness corresponding to a fraction of the c-parameter along which axis the perovskite layers are stacked. Magnetization measurements have been carried out on the few-layer samples containing iron. Few-layer species of a few layered metal-organic compounds have been obtained by ultrasonication and characterized by Tyndall cones, atomic force microscopy, optical spectroscopy and magnetic measurements. Significant changes in the optical spectra and magnetic properties are found in the few-layer species compared to the bulk samples. Few-layer species of the Aurivillius family of oxides may find uses as thin layer dielectrics in photovoltaics and other applications. - Graphical abstract: Exfoliation of the layered Aurivillius oxides into few-layer nanosheets by chemical Li intercalation using n-BuLi followed by reaction in water. Exfoliation of the layered metal-organic compounds into few-layer nanosheets by ultrasonication. - Highlights: • Few-layer nanosheets of Aurivillius family of oxides with perovskite layers have been generated by lithium intercalation. • Few-layer nanosheets of few layered metal-organic compounds have been generated by ultrasonication. • Few-layer nanosheets of the Aurivillius oxides have been characterized by AFM, TEM and optical spectroscopy. • Aurivillius oxides containing Fe show layer dependent magnetic properties. • Exfoliated few-layer metal-organic compounds show changes in spectroscopic and magnetic properties compared with bulk materials.

• OSTI ID: 22475553
• Journal Information: Journal of Solid State Chemistry, Vol. 224; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ATOMIC FORCE MICROSCOPY
BARIUM COMPOUNDS
BARIUM IONS
BISMUTH COMPOUNDS
BORATES
COMPARATIVE EVALUATIONS
COPPER COMPLEXES
FERROELECTRIC MATERIALS
IRON IONS
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
NANOSTRUCTURES
NITROGEN OXIDES
ORGANOMETALLIC COMPOUNDS
PHOSPHONATES
PHOTOVOLTAIC EFFECT
THIN FILMS
TITANIUM IONS
TRANSMISSION ELECTRON MICROSCOPY