Ultrasound assisted ambient temperature synthesis of ternary oxide AgMO{sub 2} (M=Fe, Ga)

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.01.043· OSTI ID:21370411

Nagarajan, R ^[1]; Tomar, Nobel ^[1]

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1. Materials Chemistry Group, Department of Chemistry, University of Delhi, Delhi 110 007 (India)

The application of ultrasound for the synthesis of ternary oxide AgMO{sub 2} (M=Fe, Ga) was investigated. Crystalline alpha-AgFeO{sub 2} was obtained from the alkaline solutions of silver and iron hydroxides by sonication for 40 minutes. alpha-AgFeO{sub 2} was found to absorb optical radiation in the 300-600 nm range as shown by diffuse reflectance spectroscopy. The Raman spectrum of alpha-AgFeO{sub 2} exhibited two bands at 345 and 638 cm{sup -1}. When beta-NaFeO{sub 2} was sonicated with aqueous silver nitrate solution for 60 minutes, beta-AgFeO{sub 2} possessing orthorhombic structure was obtained as the ion-exchanged product. The Raman spectrum of beta-AgFeO{sub 2} showed four strong bands at 295, 432, 630 and 690 cm{sup -1}. Sonication of beta-NaGaO{sub 2} with aqueous silver nitrate solution for 60 minutes resulted in olive green colored, alpha-AgGaO{sub 2}. The diffuse reflectance spectrum and the EDX analysis confirmed that the ion-exchange through sonication was complete. The Raman spectrum of alpha-AgGaO{sub 2} had weak bands at 471 and 650 cm{sup -1}. - Graphical abstract: The application of ultrasound in the formation of alpha and beta-forms of AgMO{sub 2} (M=Fe, Ga) has been demonstrated.

• OSTI ID: 21370411
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 6; Other Information: DOI: 10.1016/j.jssc.2009.01.043; PII: S0022-4596(09)00043-7; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMBIENT TEMPERATURE
GALLIUM OXIDES
ION EXCHANGE
IRON HYDROXIDES
IRON OXIDES
ORTHORHOMBIC LATTICES
RAMAN SPECTRA
SILVER HYDROXIDES
SILVER NITRATES
SILVER OXIDES
SOLUTIONS
SYNTHESIS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISPERSIONS
GALLIUM COMPOUNDS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SILVER COMPOUNDS
SPECTRA
TRANSITION ELEMENT COMPOUNDS