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Mn1Ce1 and Mn0.9Co0.1Ce1 complex oxides were prepared by co-precipitation in hydrothermal conditions and their physicochemical properties were characterized with N2 adsorption, XRD, Raman, and SEM. The complex oxides show enough stability and catalytic activity for oxidative degradation of 4,4'-Dibromobiphenyl in sub-critical water. Mn0.9Co0.1Ce1 has higher activity than Mn1Ce1, indicating doping...
Humic acid (HA) was considered to be the main precursor of disinfection by-products (DBPs) in chlorination. In this study, an effective and economic method of preparing TiO2 film was successfully developed for adsorption of HA. The crystal structure and surface morphology of the TiO2 film were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The effects of some factors such...
Abstract-This study aimed at improving the photocatalytic oxidation of humic acids (HA) in α-Fe2O3suspensions by adding calcium cationic ion (Ca2+). A visible light photocatalyst of α-Fe2O3 was prepared by co-precipitation method and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). First a set of tests was conducted in the dark to study the adsorption of HA onto α-Fe...
The Zn2+-La3+Co-doped TiO2 photocatalysts prepared by doping lanthanum ion and zinc ion into TiO2 structure in a sol-gel process were shown to be efficient photocatalyst for the purification of Indoor air.The catalyst samples were then characterized by XRD and UV-vis analyses. The analytical results demonstrated that the lanthanum- zinc co-doping could inhibit the phase transformation of TiO2 and...
Multi-wall carbon nanotubes (MWNTs) had been synthesized by catalytic chemical vapor deposition of acetylene over Fe loaded mesoporous silica. The as-grown MWNTs were purified by a two-step purification procedure involving acid washing and oxidation in diluted air, and characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermo...
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