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Received December 24, 2014
Accepted January 1, 2016
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Highly efficient Al-doped ZnO : Ag catalyst for RB19 photocatalytic degradation: Microwave-assisted synthesis and characterization
Department of Nanotechnology, Semnan University, Semnan, Iran 1Department of Environmental Research, Institute for Color Science and Technology, P. O. Box 16765-654, Tehran, Iran 2Department of Nanomaterial’s and Nanocoatings, Institute for Color Science and Technology, P. O. Box 16765-654, Tehran, Iran
Korean Journal of Chemical Engineering, July 2016, 33(7), 2018-2026(9), 10.1007/s11814-016-0001-1
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Abstract
ZnO: Ag.Al nano-catalyst was synthesized by microwave technique. The characterization and evaluation of this semiconductor catalyst was examined in contrast with ZnO and ZnO:Ag by X-ray diffraction (XRD), scanning electron microscopy (SEM), tunneling electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy. Thermodynamic study of combustion synthesis showed the reaction temperature for ZnO: Ag·Al samples decreased to 481.48 ℃ compared to ZnO that is 1141 ℃. Tauc’s plot was used to calculate the band gap of samples and the location of absorption edge was found at 380 nm. Different molar ratios of Ag and Al were examined to find the best activity of catalyst. In this study, reactive blue 19 (RB19) as a water pollution was used to find the efficiency of catalyst, and the effect of pH on the reaction was studied in a batch reactor under UV radiation. Also, the recyclability experiments confirm that the synthesized ZnO: Ag·Al (7mole% Ag and 3% mole Al) has responsible photocatalytic activity as compared to ZnO at a similar operating condition.
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Karunakaran C, Rajeswari V, Gomathisankar P, Solid State Sci., 13, 923 (2011)
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Mondal S, Bhattacharyya SR, Mitra P, Physics, 80, 315 (2013)
Wang L, Hu Q, Li Z, Guo J, Li Y, Mater. Lett., 79, 277 (2012)
Iqbal J, Jan T, Ismail M, Ahmad N, Arif A, Khan M, Adil M, Arshad A, Ceram. Int., 40, 7487 (2013)
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Xie W, Li Y, Sun W, Huang J, Xie H, Zhao X, J. Photochem. Photobiol. A-Chem., 216, 149 (2010)
Aydın C, Abd El-sadek MS, Zheng K, Yahia IS, Yakuphanoglu F, Opt. Laser Technol., 48, 447 (2013)
Son HJ, Jeon KA, Kim CE, Kim JH, Yoo KH, Lee SY, Opt. Laser Technol., 48, 447 (2013)
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Pal B, Dhara S, Giri PK, Sarkar D, J. Alloy. Compd., 615, 378 (2014)
Lin KF, Cheng HM, Hsu HC, Lin LJ, Hsieh WF, Chem. Phys. Lett., 409(4-6), 208 (2005)
Mohan R, Krishnamoorthy K, Kim SJ, Chem. Phys. Lett., 539-540, 83 (2012)
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Sahu DR, Lin SY, Huang JL, Sol. Energy Mater. Sol. Cells, 91(9), 851 (2007)
Shahla MN, Tabatabaei SM, Young Researchers and Elite Club, 2 (2000)
Gomez GA, Veldman MB, Zhao Y, Burgess S, Lin S, PLoS ONE, 4(3) (2009)
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Housecroft CE, Sharpe AG, Inorganic Chemistry (2nd Ed.). Prentice Hall. P.173 ISBN 978-0130399137 (2004).
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Saravanan R, Karthikeyan N, Gupta VK, Thirumal E, Thangadurai P, Narayanan V, Stephen A, Mater. Sci. Eng., 4, 2235 (2013)
Pyne S, Sahoo GP, Bhui DK, Bar H, Sarkar P, Samanta S, Maity A, Misra A, Spectroc. Acta Pt. A-Molec. Biomolec. Spectr., 93, 100 (2012)
