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Received December 21, 2016
Accepted April 25, 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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Porous MnO2/CNT catalysts with a large specific surface area for the decomposition of hydrogen peroxide
1Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seoul 02841, Korea 2Advanced Analysis Center and Green City Technology Institute, Korea Institute of Science & Technology, Seoul 02792, Korea 3Green School, Korea University, 145 Anam-ro, Seoul 02841, Korea
bluebird18@korea.ac.kr
Korean Journal of Chemical Engineering, August 2017, 34(8), 2147-2153(7), 10.1007/s11814-017-0120-3
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Abstract
H2O2 vapor sterilization is an effective and safe method for removing various pathogens. To improve the efficiency of this technique, the time required for sterilization must be shortened. The aeration time constitutes a large portion of the total sterilization time; therefore, the development of a catalyst for H2O2 decomposition is necessary. Bulk MnO2 is typically used in H2O2 decomposition, but it has a low specific surface area. To increase H2O2 decomposition activity, specific surface area and electron transfer ability of catalyst need improvement. In this study, MnO2/ CNT(x), where x denotes the weight ratio of CTAB to H2O in the catalyst preparation, was synthesized using a soft template method with varying amounts of the template. Overall, the catalyst specific surface area remarkably increased to 190-200m2/g from 0.043m2/g for bulk MnO2 and these increased surface areas resulted in superior H2O2 decomposition activity. Among the CNT-supported catalysts tested, MnO2/CNT (1.0) exhibited the highest activity, which was 570 times that of bulk MnO2. Aeration times were also calculated with some assumptions and the aeration can be finished within 1 hr (bulk MnO2 needs about 25 hr).
Keywords
References
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Holmdahl T, Lanbeck P, Wullt M, Walder MH, Infect. Control Hosp. Epidemiol., 32, 831 (2011)
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Hasan MA, Zaki MI, Pasupulety L, Kumari K, Appl. Catal. A: Gen., 181(1), 171 (1999)
Hermanek M, Zboril R, Medrik N, Pechousek J, Gregor C, J. Am. Chem. Soc., 129(35), 10929 (2007)
Kim G, Jung KY, Lee CH, Han JS, Jeong BH, Park YK, Jeon JK, Mater. Res. Bull., 82, 76 (2016)
Lee YN, Lago RM, Fierro JLG, Gonzalez J, Appl. Catal. A: Gen., 215(1-2), 245 (2001)
Gupta KC, Abdulkadir HK, Chand S, J. Mol. Catal. A-Chem., 202(1-2), 253 (2003)
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Walling C, Goosen A, J. Am. Chem. Soc., 95, 2987 (1973)
Lee DW, Lee MS, Lee JY, Kim S, Eom HJ, Moon DJ, Lee KY, Catal. Today, 210, 2 (2013)
Baek SC, Bae JW, Cheon JY, Jun KW, Lee KY, Catal. Lett., 141(2), 224 (2011)
Ryu JH, Lee KY, La H, Kim HJ, Yang JI, Jung H, J. Power Sources, 171(2), 499 (2007)
Wang T, Zhang X, Liu H, Guo Y, Zhang Y, Wang Y, Sun B, Catal. Surv. Asia, 21, 94 (2017)
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Lee YH, Kim H, Choi HS, Lee DW, Lee KY, Korean J. Chem. Eng., 32(11), 2220 (2015)
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Jin M, Park JN, Shon JK, Li Z, Lee E, Kim JM, J. Porous Mat., 20, 989 (2013)
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Lee CW, Yoon SB, Bak SM, Han J, Roh KC. Kim KB, J. Mater. Chem., 2, 3641 (2014)
Ding K, Hu B, Xie Y, An G, Tao R, Zhang H, Liu Z, J. Mater. Chem., 19, 3725 (2009)
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Lee H, Kim S, Lee DW, Lee KY, Catal. Commun., 12, 968 (2011)
De Laat J, Gallard H, Environ. Sci. Technol., 33, 2726 (1999)
Huang CP, Huang YH, Appl. Catal. A: Gen., 346(1-2), 140 (2008)
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