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Received March 28, 2017
Accepted June 7, 2017
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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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Efficient photocatalytic removal of aqueous Cr(VI) by N-F-Al tri-doped TiO2
School of Environmental Science and Engineering, North China Electric Power University,, Baoding, Hebei 071003, P. R. China
wsqhg@163.com
Korean Journal of Chemical Engineering, September 2017, 34(9), 2507-2513(7), 10.1007/s11814-017-0161-7
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Abstract
As chromium is a common heavy metal contaminant in water, we have prepared N-F-Al tri doped TiO2 catalyst for Cr(VI) removal under visible light. The sample was prepared via a sol-gel method and was characterized by XRD, BET, UV-vis DRS, XPS and SEM techniques. In the photocatalytic experiments, effects of Al/Ti ratio, F/Ti ratio, calcination temperature and different dopants were investigated. The optimum Al/Ti molar ratio, F/Ti ratio and calcination temperature proved to be 0.01, 0.1 and 500 °C, respectively, which is in accordance with the characterization analysis. Catalysts prepared under this condition showed a high photoactivity for Cr(VI) removal in water.
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References
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Cao S, Wang HQ, Yu FX, Shi MP, Chen S, Weng XL, Liu Y, Wu ZBA, J. Colloid Interface Sci., 463, 233 (2016)
Giannakas AE, Seristatidou E, Deligiannakis Y, Konstantinou I, Appl. Catal. B: Environ., 132-133, 460 (2013)
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Li D, Cheng XW, Yu XJ, Xing ZP, Chem. Eng. J., 27, 9994 (2015)
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Valentin CD, Finazzi E, Pacchioni G, Chem. Eng. J., 20, 3706 (2008)
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Xiao J, Pan ZC, Zhang B, Liu G, Zhang HC, Song XF, Hu GH, Xiao CM, Wei ZG, Zheng YY, Mater. Lett., 188, 66 (2017)
Elbanna O, Zhang P, Fujitsuka M, Majima T, Appl. Catal. B: Environ., 192, 80 (2016)
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Samsudin EM, Abd Hamid SB, Juan JC, Basirun WJ, Centi G, Appl. Surf. Sci., 370, 380 (2016)
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Czoska AM, Livraghi S, Chiesa M, Giamello E, Agnoli S, Granozzi G, Finazzi E, Valentin CD, Pacchioni G, J. Phys. Chem., 112(24), 8951 (2008)
