TY - JOUR

T1 - Synthesis and photocatalytic activity of mesoporous nanocrystalline Fe-doped titanium dioxide

AU - Qamar, M.

AU - Merzougui, B.

AU - Anjum, D.

AU - Hakeem, A.S.

AU - Yamani, Z.H.

AU - Bahnemann, D.

N1 - Funding information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through project No. 10-NAN1387-04 as part of the National Science, Technology and Innovation Plan. The support of Center of Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals is gratefully acknowledged.

PY - 2014/7

Y1 - 2014/7

N2 - Synthesis of mesoporous nanocrystalline iron-doped titania following the sol-gel method is presented in this work. Samples with various molar ratios (0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10 and 20%) of Fe to Ti were prepared. The particle size was found to be in the range of ∼12 nm while mesopores were approximately near to ∼5.5 nm. The effect of Fe as doping element on titania properties, such as crystallite size, surface area, pore size, pore volume and d-spacing was investigated. Moreover, distribution of Fe in TiO 2 matrix was determined by elemental mapping whereas change in absorption properties was evaluated by diffuse reflectance spectroscopy. It was observed that as the Fe content was increased, a partial phase transformation from anatase to rutile and pseudorutile took place. Effect of ultraviolet, ultraviolet-visible and visible radiations on the photocatalytic activity of these catalysts was studied by removal of Methyl Orange as model pollutant. As results, it was found that the photocatalytic activity of such catalysts depends strongly on Fe amount and type of radiation.

AB - Synthesis of mesoporous nanocrystalline iron-doped titania following the sol-gel method is presented in this work. Samples with various molar ratios (0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10 and 20%) of Fe to Ti were prepared. The particle size was found to be in the range of ∼12 nm while mesopores were approximately near to ∼5.5 nm. The effect of Fe as doping element on titania properties, such as crystallite size, surface area, pore size, pore volume and d-spacing was investigated. Moreover, distribution of Fe in TiO 2 matrix was determined by elemental mapping whereas change in absorption properties was evaluated by diffuse reflectance spectroscopy. It was observed that as the Fe content was increased, a partial phase transformation from anatase to rutile and pseudorutile took place. Effect of ultraviolet, ultraviolet-visible and visible radiations on the photocatalytic activity of these catalysts was studied by removal of Methyl Orange as model pollutant. As results, it was found that the photocatalytic activity of such catalysts depends strongly on Fe amount and type of radiation.

KW - Mesoporous nanomaterials

KW - Nanocomposite

KW - Photocatalysis

KW - Sol-gel

KW - Visible light photocatalysts

UR - http://www.scopus.com/inward/record.url?scp=84897580559&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2013.10.040

DO - 10.1016/j.cattod.2013.10.040

M3 - Article

VL - 230

SP - 158

EP - 165

JO - Catalysis today

JF - Catalysis today

SN - 0920-5861

ER -