Preparation of NaxBayBiO3·nH2O and their photooxidation characteristic under visible-light irradiation
作者： Feng Peng , Chunlin Chen , Hao Yu , Hongjuan Wang , Jian Yang
DOI: 10.1016/J.MATCHEMPHYS.2009.03.031
关键词: Photochemistry 、 Chemistry 、 Hydrothermal circulation 、 Calorimetry 、 Visible spectrum 、 Photocatalysis 、 X-ray photoelectron spectroscopy 、 Irradiation 、 Phenol 、 Scanning electron microscope
摘要: Abstract NaxBayBiO3·nH2O (NBBO) has been prepared using a commercial NaBiO3·nH2O (NBO) as starting material with hydrothermal iron-exchange reaction. As-synthesized samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible light (UV–vis) absorbance spectra, thermogravimetry-differential calorimetry (TG-DSC) and photoelectron spectroscopy (XPS) techniques. The photooxidation decomposition phenol over NBBO carried out under visible-light irradiation (λ > 400 nm). result revealed that the showed considerable activity for degradation in range visible light. reusability indicated structure was instable, which changed to Bi2O2CO3 process, although kept high three runs. This study provided useful information development new bismuthate photocatalyst higher photoactivity irradiation.
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