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Received March 12, 2018
Accepted June 24, 2018
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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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Reduced graphene oxide supported V2O5-WO3-TiO2 catalysts for selective catalytic reduction of NOx
Minwoo Lee1 2
Bora Ye1
Bora Jeong1
Hye-yeon Chun1
Duck Hyun Lee1
Sam-sik Park3
Heesoo Lee2
Hong-Dae Kim1†
1Green Materials & Processes Group, Ulsan Regional Division, Korea Institute of Industrial Technology, Ulsan 44413, Korea 2Department of Materials Science and Engineering, Pusan National University, Busan 46142, Korea 3R&D Center, NANO. Co., Ltd., Sangju 37257, Korea
hdkim@kitech.re.kr
Korean Journal of Chemical Engineering, October 2018, 35(10), 1988-1993(6), 10.1007/s11814-018-0109-6
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Abstract
We present a reduced-graphene-oxide (rGO)-supported V2O5-WO3-TiO2 (VWTi) catalysts for the efficient selective catalytic reduction of NOx. The rGO support provides well-dispersed functional sites for the nucleation of nanoparticles, allowing the formation of VWTi catalysts with high specific surface areas. The dispersion of the nanoparticles, as observed by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), confirmed the uniform dispersion of the particles on the rGO surface. Detailed Fourier-transform infrared (FT-IR) and NH3 temperature-programmed desorption (NH3-TPD) analyses indicated that the high density of acidic sites provided by the rGO is key to the observed enhancement of NOx removal efficiency, and the rGO-supported catalysts exhibit improved NOx removal efficiencies with smaller amounts of V2O5 and WO3 compared with the commercially available V2O5-WO3-TiO2 catalysts.
Keywords
References
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Ko J, Jin D, Jang W, Myung CL, Kwon S, Park S, Appl. Energy, 187, 652 (2016)
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Li B, Wu C, Li Y, Zhang J, Environ. Sci. Technol., 45, 7394 (2011)
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Su W, Lu XN, Jia SH, Wang J, Ma HZ, Xing Y, Catal. Lett., 145(7), 1446 (2015)
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Wang P, Zhai Y, Wang D, Dong S, Nanoscale, 3, 1640 (2010)
Mao S, Cui S, Lu G, Yu K, Wen Z, Chen J, J. Mater. Chem., 22, 11009 (2012)
Aguilar-Romero M, Camposeco R, Castillo S, Marin J, Rodriguez-Gonzalez V, Garcia-Serrano LA, Mejia-Centeno I, Fuel, 198, 123 (2017)
Nguyen VK, Park JH, Shin CH, Korean J. Chem. Eng., 31(4), 582 (2014)
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Shen S, Wang X, Chen T, Feng Z, Li C, J. Phys. Chem. C, 118, 12661 (2014)
Shen B, Liu T, Zhao N, Yang X, Deng L, J. Environ. Sci., 22, 1447 (2010)
Matralis HK, Papadopoulou C, Kordulis C, Elguezabal AA, Corberan VC, Appl. Catal. A: Gen., 126(2), 365 (1995)
Wang CZ, Yang SJ, Chang HZ, Peng Y, Li JH, Chem. Eng. J., 225, 520 (2013)
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Mjejri I, Etteyeb N, Sediri F, Mater. Res. Bull., 48(9), 3335 (2013)
Wang S, Guo T, Pan W, Li M, Sun P, Liu S, Liu S, Sun X, Liu J, Phys. Chem. Chem. Phys., 19, 5333 (2017)
Topsoe NY, Dumesic JA, Topsoe H, J. Catal., 151(1), 241 (1995)
Du X, Gao X, Qiu K, Luo Z, Cen K, J. Phys. Chem. C, 119, 1905 (2015)
Lin CH, Bai H, Appl. Catal. B: Environ., 42(3), 279 (2003)
Jo SH, Shin B, Shin MC, Van Tyne CJ, Lee H, Catal. Commun., 57, 134 (2014)
