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Preparation and Photocatalytic Activity of Iron Oxide-Loaded Potassium Titanate Layered Compounds

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Iron oxide-loaded hydrous potassium tetratitanate (K0.3Ti4O7.3(OH)1.7) compounds consisting of 1.48 wt% (sample ‘B’), 1.87 wt% (sample ‘C’) and 5.60 wt% (sample ‘D’) of iron oxide were synthesized by suspending the K0.3Ti4O7.3(OH)1.7 (sample ‘A’) in Fe2(SO4)3 solution for 24 h, followed by washing several times with deionized water and then dried at 120 °C for 24 h. The K0.3Ti4O7.3(OH)1.7 was synthesized by refluxing the K2Ti4O9.2H2O in 1 M HNO3 solution. Band-gap energies of the K0.3Ti4O7.3(OH)1.7 and the iron oxide-loaded samples are 3.12 ± 0.6 eV and 2.23 ± 0.09 eV, respectively. Photooxidation activity towards methylene blue decomposition under fluorescence irradiation was found to decrease as follow: sample ‘B’ > sample ‘C’ > Sample ‘A’ > sample ‘D’ > commercial Fe2O3 ∼ Blank. The photoactivity under sunlight irradiation was found to decrease as follow: sample ‘B’ > sample ‘A’ > Sample ‘C’ > sample ‘D’ > commercial Fe2O3 ∼ Blank.
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Document Type: Research Article

Publication date: 2012-06-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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