Chinese Journal of Catalysis

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Ordered mesoporous manganese oxide as catalyst for hydrogen peroxide oxidation of norfloxacin in water

SUI Minghao, SHE Lei, SHENG Li, WEI Jinjie, ZHANG Lingdian, HUANG Shuhang   

  1. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • Received:2012-08-31 Revised:2012-11-22 Online:2013-04-02 Published:2013-04-03
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (50708067, 51078281, 51278351), Foundation for the Author of National Excellent Doctoral Dissertation of China (2007B48), the National Science and Technology Major Project (2012ZX07408001), and the Fundamental Research Funds for the Central Universities (0400219192).

Abstract:

Ordered mesoporous manganese oxide (om-MnOx) was prepared and used in oxidation by hydrogen peroxide of norfloxacin (NFX). The om-MnOx was prepared using a hard template method. The catalytic activity of om-MnOx was investigated by evaluating the changes in degradation efficiency and antibacterial activity of NFX. om-MnOx exhibited significant catalytic activity for the degradation of NFX in water by hydrogen peroxide. Lower pH conditions favored the catalytic activity of om-MnOx/hydrogen peroxide. The presence of om-MnOx achieved a greater reduction in the antibacterial ability of NFX than that was obtained with hydrogen peroxide alone. The inhibiting effect of t-butanol indicated that om-MnOx enhanced the generation of hydroxyl radicals. Byproducts from NFX were detected during the om-MnOx-catalyzed hydrogen peroxide process, and possible reaction pathways were proposed.

Key words: Ordered mesoporous material, Manganese oxide, Hydrogen peroxide, Oxidation, Norfloxacin