Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 78, Issue -, Pages 106-115Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2014.11.038
Keywords
Bi2WO6; Nanocatalyst; X-ray diffraction; Spectroscopy
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Funding
- Prince of Songkla University (PSU) [SCI560002S]
- Thailand's Office of the Higher Education Commission through the National Research University (NRU) Project for Chiang Mai University (CMU)
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In this research, effect of pH on phase, morphologies and photocatalytic activities of Bi2WO6 synthesized in the precursor solution with the pH of 2-12 by the 180 degrees C and 20 h hydrothermal reaction is reported. The as-synthesized Bi2WO6 products were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectrophotometry, Brunauer-Emmett-Teller (BET) isotherm, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-visible spectroscopy. The photocatalytic activities of the as-synthesized Bi2WO6 products were evaluated via the photodegradation of rhodamine B (RhB) under visible-light radiation. The results showed that the precursor solution pH had an important influence on the photocatalytic activities of the Bi2WO6 nanocatalyst. When the precursor solution pH was 2, the RhB degradation exhibited the highest decolorization efficiency of 98% within 100 mm. (C) 2014 Elsevier Ltd. All rights reserved.
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