Synthesis and characterization of Fe-containing C/TiO_2 composites and their degradation effect for the piggery waste

摘要

In this present study, we have synthesized Fe-containing AC(activated carbon)/TiO_2 composites with titanium (VI) n-butoxide (TNB) as titanium source to Fe treated activated carbon through the impregnation method. The result of the textural surface properties demonstrates that there is a slight decrease in the BET surface area of composite samples with increasing of the amount of Fe treated. The surface properties of SEM presented to the characterization of porous texture on the Fe-containing AC/TiO_2 composites and homogenous compositions for Fe and titanium dioxide distributed on the sample surfaces. A Fe compound peaks and titanium dioxide structure were observed in the X-ray diffraction patterns for the Fe-containing AC/TiO_2 composites. The results of chemical elemental composition for the Fe-containing AC/TiO_2 composites showed that most of the spectra for these samples gave stronger peaks for C, O, treated Fe components and Ti metal than that of any other elements. From the photo degradation results for the piggery waste, the Fe-containing AC/TiO_2 composites showed the excellent degradation activity for the COD due to photocatalysis of the supported TiO_2, radical reaction by Fe species and adsorptivity and absorptivity of porous carbon.