This study proved the significance of simulated sunlight irradiation response capability of Sn-F co-doped TiO_(2)/SiO_(2)(Sn-F-TiO_(2)/SiO_(2))photocatalysts,which were prepared by a simple sol-gel method and were eva...This study proved the significance of simulated sunlight irradiation response capability of Sn-F co-doped TiO_(2)/SiO_(2)(Sn-F-TiO_(2)/SiO_(2))photocatalysts,which were prepared by a simple sol-gel method and were evaluated by acrylonitrile degradation for photocatalytic activity.The synthesized catalysts were characterized by X-ray Diffraction(XRD),Scanning Electron Microscopy(SEM),Energy Dispersive Spectrometer(EDS),X-ray Photoelectron Spectroscopy(XPS),Brunauer-Emmett-Teller(BET),Ultraviolet-Visible Absorption spectroscopy(UV-Vis),and Photoluminescence Spectroscopy(PL).UV-Visible spectroscopy demonstrated that Sn doping caused remarkable red shift in TiO_(2),which significantly increased the absorption efficiency of the catalysts.The XPS results showed that Sn was successfully doped into the TiO_(2) lattice.The photocatalytic degradation of acrylonitrile indicated that the Sn-F-TiO_(2)/SiO_(2) photocatalysts exhibited excellent photocatalytic activity when being annealed at 550℃for 2 h.The degradation rate of acrylonitrile reached 67.7%after irradiation under simulated sunlight for 6 min,and the hole was the most important active species.展开更多
The effects of N-2-hydroxyethyl-N-methyl-p-toluidine (HMT) on MMA polymerization using organic peroxide as an initiator and on AN photoinduced polymerization have been investigated respectively. The kinetics of polyme...The effects of N-2-hydroxyethyl-N-methyl-p-toluidine (HMT) on MMA polymerization using organic peroxide as an initiator and on AN photoinduced polymerization have been investigated respectively. The kinetics of polymerization and the overall activation energy of polymerization were determined. Based on kinetics study and the end group analysis of the polymer obtained by UV spectrum method, the initiation mechanism is proposed.展开更多
基金Sponsored by the Science and Technology Commission of Shenzhen Municipality,P.R.China(Grant Nos.JCYJ20140417172417138 and ZDSYS20140508161622508).
文摘This study proved the significance of simulated sunlight irradiation response capability of Sn-F co-doped TiO_(2)/SiO_(2)(Sn-F-TiO_(2)/SiO_(2))photocatalysts,which were prepared by a simple sol-gel method and were evaluated by acrylonitrile degradation for photocatalytic activity.The synthesized catalysts were characterized by X-ray Diffraction(XRD),Scanning Electron Microscopy(SEM),Energy Dispersive Spectrometer(EDS),X-ray Photoelectron Spectroscopy(XPS),Brunauer-Emmett-Teller(BET),Ultraviolet-Visible Absorption spectroscopy(UV-Vis),and Photoluminescence Spectroscopy(PL).UV-Visible spectroscopy demonstrated that Sn doping caused remarkable red shift in TiO_(2),which significantly increased the absorption efficiency of the catalysts.The XPS results showed that Sn was successfully doped into the TiO_(2) lattice.The photocatalytic degradation of acrylonitrile indicated that the Sn-F-TiO_(2)/SiO_(2) photocatalysts exhibited excellent photocatalytic activity when being annealed at 550℃for 2 h.The degradation rate of acrylonitrile reached 67.7%after irradiation under simulated sunlight for 6 min,and the hole was the most important active species.
基金The project supported by the National Natural Science Foundation of China
文摘The effects of N-2-hydroxyethyl-N-methyl-p-toluidine (HMT) on MMA polymerization using organic peroxide as an initiator and on AN photoinduced polymerization have been investigated respectively. The kinetics of polymerization and the overall activation energy of polymerization were determined. Based on kinetics study and the end group analysis of the polymer obtained by UV spectrum method, the initiation mechanism is proposed.
