Preparation and Photocatalytic Performance of α-SiW11Ti/PANI/TiO2 Nanocomposite

摘要：

　　An efficient α-SiW11Ti/PANI/TiO2 nanocomposite photocatalyst was prepared by a “In-stiu polymerization method.(NH4)2S2O8 was used as an oxidant to form polyaniline-wrapped TiO2 particles and then by an electrostatic assembly of α-SiW11Ti.The α-SiW11Ti/PANI/TiO2 nanocomposite were characterized by UV-visible absorption spectrum (UV-Vis),Fourier transformation infrared spectroscopy (FT-IR),X-ray diffraction (XRD) and scanning electron microscopy (SEM).The photocatalytic activity in degradation of malachite green on the α-SiW11Ti/PANI /TiO2 was carried out in an aqueous solution.The results show that the sensitizing effect of PANI can improve the light response of TiO2 and enhance the separation efficiency of electron and hole pairs,which in turn promotes the photocatalytic activity of the composites.This novel photocatalyst exhibits high photocatalytic activity to decompose malachite green under 30 W ultraviolet light irradiation.The malachite green was degraded by 97.53% after 90 min irradiation on the α-SiW11Ti/PANI/TiO2 nanocomposite,which was better than that of Degussa P25 (TiO2) and PANI/TiO2.

关键词： α-SiW11Ti/PANI/TiO2 “In-stiu polymerization Photocatalytic Malachite green degradation

作者: Ronghua Ma Liyang Deng Dandan Wang

作者单位: College of chemistry and engineering,qiqihar university, qiqihar 161006,China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 837-842

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）