4.5 Article

Preparation of magnetic imprinted graphene oxide composite for catalytic degradation of Congo red under dark ambient conditions

期刊

WATER SCIENCE AND TECHNOLOGY
卷 76, 期 7, 页码 1676-1686

出版社

IWA PUBLISHING
DOI: 10.2166/wst.2017.342

关键词

catalytic degradation; Congo red; dark ambient conditions; imprinted; magnetic property

资金

  1. Program for New Century Excellent Talents in University [NCET-13-0710]
  2. National Natural Science Foundation of China [31570572]

向作者/读者索取更多资源

Magnetic imprinted N-doped P25/Fe3O4-graphene oxide (MIGNT) was prepared with methyl orange as the dummy template and pyrrole as functional monomer for catalytic degradation of Congo red (CR). Hummers method and the hydrothermal method were used to synthesize Fe3O4-GO and N-doped P25, respectively. The results of adsorption and degradation experiments showed that the adsorption capacity and catalytic degradation ability of the imprinted composite for CR were obviously higher than those of a non-imprinted one. Moreover, the effect factors on degradation efficiency of CR, such as the initial concentration of CR, catalysis time, pH of the solution and temperature, were investigated. The MIGNT was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, a physical property measurement system and a thermal gravimetric analyzer. The degradation products of CR were detected with high performance liquid chromatography and a mass spectrometer. The MIGNT was a brand-new imprinted composite and had high degradation efficiency for CR under dark ambient conditions. The MIGNT could be recycled conveniently, due to its magnetic property, and could be used as an effective, environmentally friendly and low-cost catalytic degradation material for the treatment of water contaminated by CR.

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