Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 86, Issue -, Pages 93-100Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2018.06.024
Keywords
Microrods alpha-Bi2O3; Ethylenediamine-solvent; Bismuth-Nitrate; Amorphous-sheet
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Funding
- CONACYT [251276]
- UNAM-PAPIIT [IN106015]
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Enlarged microrods alpha-Bi2O3 were directly obtained by chemical precipitation method at soft reflux conditions using ethylenediamine-solvent as precipitating and morphological template, in absence or presence of nitric acid. The influence of the molar ratio of HNO3/Bi3+ (0, 5 and 10) and reflux temperature, maintaining fixed the Bi3+ content in solution, on the formation of Bi2O3 or amorphous-compounds was investigated. The structure and properties of the alpha-Bi2O3 obtained by the direct precipitation condition or after calcination were obtained by X-ray diffraction, infrared analysis, diffuse reflectance spectroscopy and scanning electron microscopy. A relationship between the reflux temperature and the molar ratio of HNO3/Bi3+ ions for the direct formation of alpha-Bi2O3 phase is discussed. The photocatalytic properties, recyclability and stability of alpha-Bi2O3 solids were tested in the photodegradation of indigo carmine dye under UV-Light. X-ray diffraction and infrared analysis of the re-used alpha-Bi2O3 were also included.
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