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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...
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