Structural, morphological and optical investigation of β-Ag2MoO4 microcrystals obtained with different polar solvents. Issue 43 (8th October 2015)

• Record Type: Journal Article
• Authors: Cunha, F. S.; Sczancoski, J. C.; Nogueira, I. C.; de Oliveira, V. G.; Lustosa, S. M. C.; Longo, E.; Cavalcante, L. S.
• Is Part Of: CrystEngComm. Volume 17:Issue 43(2015)
• Page Start: 8207
• Page End: 8211
• Publication Date: 2015-10-08
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c5ce01662b
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : In this work, rietveld refinement, morphology and optical properties of β-Ag2 MoO4 microcrystals were synthesized by the precipitation method using different polar solvents: water, methanol, ethanol, 1-propanol and 1-butanol. Abstract : This communication reports the formation of beta-silver molybdate (β-Ag2 MoO4 ) microcrystals synthesized by a simple precipitation method using different polar solvents (water, methanol, ethanol, 1-propanol and 1-butanol). These crystals were structurally characterized by means of X-ray diffraction (XRD) and Rietveld refinement. The crystal shapes and sizes were observed by field emission scanning electron microscopy (FE-SEM). Their optical properties were analyzed by ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy. XRD patterns and Rietveld refinement data indicated all crystals have a spinel-type cubic structure. FE-SEM images revealed the crystals tend to increase the average size with reduction in the degree of polarity of the solvent. Finally, β-Ag2 MoO4 microcrystals exhibited a dependence of optical band gap energies (from 3.22 to 3.38 eV) on the intermediary energy levels.