Journal
JOURNAL OF NANOMATERIALS
Volume 2015, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2015/869821
Keywords
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Funding
- Scientific Research Foundation of Chongqing University of Arts and Sciences [R2014CH08]
- Science and Technology Project from Chongqing [cstc2014jcyjA20023]
- National Training Programs of Innovation and Entrepreneurship for Undergraduates [201410642003]
- Chongqing Training Programs of Innovation and Entrepreneurship for Undergraduates [201410642008]
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Nanoscale titanium dioxide (nano-TiO2) was modified via metal doping to improve its photocatalytic activity and utilization of visible light. Nano-TiO2 doped with iron III (Fe3+) only, lanthanum III (La3+) only, and both Fe3+/La3+ was prepared using the sol-gelmethod. The photocatalytic activities of the three forms of doped nano-TiO2 were evaluated. Metal codoping limited crystal growth of crystal, and the sol-gel method was shown to be an effective technique for doping the lattice of TiO2 with Fe3+ and La3+. Codoping of nano-TiO2 with the tombarthite metal mixture had a synergistic effect of the photocatalytic performance, with the codoped nano-TiO2 exhibiting a performance greater than the sum of those of the single-doped nano-TiO2 samples. Kinetic studies showed that the photodegradation reaction of methyl orange by nano-TiO2 follows the Langmuir-Hinshelwood first order mechanism.
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