Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 411, Issue -, Pages 169-172Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2013.08.032
Keywords
Photocatalysis; TiO2 nanoparticles; Methyl orange degradation
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Funding
- EPA STRIVE scheme [2009-PhD-ET-15]
- Environmental Protection Agency Ireland (EPA) [2009-PhD-ET-15] Funding Source: Environmental Protection Agency Ireland (EPA)
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This study examines the addition of various dopants to TiO2 nanoparticles for the enhancement of photocatalytic activity. The materials were tested for efficiency on the degradation of methyl orange under UV light. The dopants were added at different molar ratios to find the ideal amount required for optimum results. BET analysis was used to determine surface areas while X-ray diffraction (XRD) analysis was used to study the effect of the dopant on the transformation of the TiO2 structure. The dopants used were Ag, S and Zr and displayed high levels of activity and show some ability to be reused. Decomposition of methyl orange was carried out using a 40 W UV bulb at 365 nm and results were measured by UV-vis spectrometry. It was determined that, overall, Ag doping displayed the best photocatalytic properties but was poor upon reuse. (C) 2013 Elsevier Inc. All rights reserved.
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