Key Laboratory Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Educ

Wuhan, China

Key Laboratory Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Educ

Wuhan, China

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Wang L.,China Three Gorges University | Fang Y.,China Three Gorges University | Gu Y.,China Three Gorges University | Huang Y.,China Three Gorges University | Zhang A.,Key Laboratory Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Educ
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2014

BiOI nano-plates were synthetized via using surfactants Cetyl pyridine sulfuric acid(CPSA)as templates by the method of hydrothermal. X-ray diffraction(XRD), scanning electron microscope(SEM), transmission electron microscopy(TEM), specific surface area, pore size analyzer(BET)and ultraviolet-visible absorption spectral reflection(UV-Vis) were employed to characterize the catalysts. Under visible irradiation(λ>420nm), BiOI was used to degrade dye Rhodamine B(RhB)and 4-Dichlorophenol(4-CP), which were degraded totally after illuminating 4h and 20h, respectively. Electronic spin capture technology(EPR)and contrast tests by adding scavengers of ·OH, O2 - and h+ were employed to prove the oxidation process mainly involved hole direct oxidation. In addition, the changes of infrared spectrometry(IR)and total organic carbon(TOC)were measured, and TOC decreased 90% after lighting 20h.

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