Raman spectrum of Cannonite
Resumo
In this paper, the X-ray powder diffraction and Raman scattering measurements for cannonite crystal structure [(Bi2O(OH)2SO4)] are presented. Cannonite was obtained as a by-product of tests for the chemical durability of glass in the system Bi2O3-SiO2-Al2O3-B2O3-ZnO. The assignment of the vibrational bands of the crystal growth on the glass-corroded surface was done by comparison with Raman spectrum of a cannonite mineral sample. Both crystals showed the same spectral pattern making possible to determine the crystalline phase deposited on the glass surface. Contrary to report in the literature, our samples did not transform in oxo-carbonated bismuth salt when exposed to air, being chemically stable.
Referências
FREDERICCI, C.; YOSHIMURA, H. N.; MOLISANI, A. L.; FELLEGARA, H. Effect of TiO2 addition on the chemical durability of Bi2O3-SiO2-ZnO-B2O3 glass system. Journal of Non-Crystalline Solids, v. 354, n. 42-43, p. 4777- 4785, 2008.
REPICHET, S.; ZWICK,A.; VENDIER, L.; LE ROUX, C.; DUBAC, J. A practical, cheap and environmentally friendly preparation of bismuth(III) trifluormethanesulfonate. Tetrahedron Letters, v. 43, n. 6, p. 993-995, 2002.
RRUFFTM. Search RRUFF Sample Data. Available in: <http://rruff.info/>. Accessed in: Apr. 4 2018.
SHEN, X. P.; YIN, G.; ZHANG, W- L.; XU, Z. Synthesis and characterization of Bi2S3 faceted nanotube bundles. Solid State Communication, v. 140, n. 3-4, p. 116-119, Oct. 2006.
STANLEY, C. J.; ROBERTS, A. C.; HARRIS, D. C.; CRIDDLE, A. J.; SZYMANSKI; J. T. Cannonite, Bi2O(OH)2SO4, a new mineral from Marysvale, Utah, USA. Mineralogical Magazine, v. 56, n. 385, p. 605-609, 1992. DOI: 10.1180/minmag.1992.056.385.17
ZHANG, J.; GU, H.; YANG, X.; CHEN, M.; YANG, Z.; ZHANG, W. Large-scale synthesis of self-assembled ultralong cannonite nanobelt film as a visible-light photocatalyst. Royal Society of Chemistry (RSC Advances), v. 5, n. 12, p. 8537-8543, 2015.
