화학공학소재연구정보센터
Applied Surface Science, Vol.478, 54-61, 2019
Fe-Mn binary oxide decorated diatomite for rapid decolorization of methylene blue with H2O2
In this paper, a novel Fe-Mn binary oxide-diatomite (FMBO-Dt) composite was prepared by co-precipitation method. The morphological and structural features of the synthesized composite were characterized by X-ray diffraction, Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The catalytic activity of FMBO-Dt composite was investigated by the degradation of methylene blue (MB) in the presence of H2O2 and the effects of various factors such as Fe/Mn molar ratio, initial pH, and initial H2O2 concentration on MB degradation were evaluated. It was found that FMBO-Dt composite was highly effective for the degradation of MB in the presence of H2O2. In addition, the stability and reusability of the composite was also investigated. Finally, the possible mechanism for the decolorization of MB in the heterogeneous system was proposed. These results suggested that FMBO-Dt composite was a promising candidate for dye wastewater treatment.