Photocatalytic properties of mesoporous TiO2 nanocomposites modified with carbon nanotubes and copper |
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| Affiliation: | 1. Department of Materials Science and Engineering, Shahreza Branch, Islamic Azad University, Iran;2. Advanced Materials Research Center, Faculty of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;3. Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Iran;4. Department of Materials Science, Sharif University of Technology, International Campus, Tehran, Iran;5. Macdiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, New Zealand;1. Department of Life Science, Dongguk University-Seoul, Seoul 100-715, South Korea;2. USDA, ARS, Forage and Range Research Laboratory, 696 N. 1100 E., Logan, UT 84322, USA;1. Research Centre for Natural Sciences, Hungarian Academy of Sciences, Institute of Materials and Environmental Chemistry, Budapest, 1117 Magyar tudósok krt. 2, Hungary;2. Eötvös Loránd University, Institute of Chemistry, Department of Analytical Chemistry, Pázmány Péter sétány 1/A 1117, Budapest, Hungary;1. State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Research & Development Center for Eco-material and Eco-chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China |
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| Abstract: | The photocatalytic activity of mesoporous TiO2 modified by the addition of carbon nanotubes (CNTs) and Cu is reported. Nanocomposites of carbon nanotubes (CNTs) containing varying amounts of Cu were formed by treatment with Cu2+ then reduced to Cu0 using NaBH4 as the reducing agent. The mesoporous TiO2, synthesized by a sol-gel method from titanium isopropoxide, was combined with the CNT/Cu nanocomposites to form the photocatalysts which were characterized by XRD, SEM, TEM, FTIR, XPS and BET surface area analysis. The photocatalytic properties of the mesoporous TiO2 composites were studied by measuring the degradation of methyl orange (MO) which was optimal in the sample containing 20 wt% of the Cu-CNT nanocomposite. The degradation efficiency for MO was a synergistic effect of photo-degradation of TiO2 and may be due to improvement of the electrical conductivity of the system by the presence of the CNT/Cu networks, since the photodegradation of MO and the photocatalytic activity of the photoactive systems increased with increasing copper content. |
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| Keywords: | Photocatalysis Carbon nanotubes Nanocomposites Copper |
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