四磺基酞菁锌敏化TiO_2的原位自组装合成及可见光光催化  

Tetrasulfophthalocyaninatozinc-Sensitized Titania Synthesized by a Novel In-situ and Self-Assembly Process and Photocatalytic Activity under Visible-Light Irradiation

作　　者：钟超阳[1] 潘海波[1] 郭龙发[1] 黄金陵[1] 

机构地区：[1]福州大学化学化工学院,福建福州350002

出　　处：《光谱学与光谱分析》2007年第11期2329-2332,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(50472001);福建省纳米重大专项项目(2005HZ01-2-6)资助

摘　　要：采用溶胶-凝胶法与原位合成相结合的方法,合成了2,9,16,23-四磺基酞菁锌(ZnTsPc)/TiO2复合材料,用FTIR,UV-Vis,XRD,Zeta电位、荧光光谱等对复合材料进行了表征,同时对材料进行了可见光光催化反应实验。实验结果表明采用该原位自组装的方法,不仅在TiO2颗粒表面原位生成酞菁,还在TiO2表面形成化学键(—SO2—O—Ti—)。有效地增强了ZnTsPc的敏化能力,使光生载流子形成有效的分离,从而大幅度地提高了复合材料的可见光光催化能力。Tetrasulfophthalocyaninatozinc/titanium dioxide （ZnTsPc/TiO2） was synthesized by a novel in-situ and self-assembly process. The prepared products, including pure TiO2 and ZnTsPc, were characterized by XRD, UV-Vis, FTIR, Zeta potential and fluorescence spectroscopic techniques. The results indicated that ZnTsPc was indeed synthesized during the in-situ method and sol-gel process. A chemical bond （--SO2--O-Ti-） was also formed between the sensitizer （ZnTsPc） and the surface of ti- tanium dioxide particles. The photocatalyst of ZnTsPc/TiO2 reveals greatly enhanced activity for the degradation of organic pollutant, Rhodamine B, under visible-light irradiation as compared with pure TiO2 and P25. The sensitization mechanism is that photo-generated charge carriers are separated by the chemical bond between ZnTsPc and TiO2.

关 键 词：ZnTsPc/TiO2 原位自组装 可见光光催化 

分 类 号：O643[理学—物理化学]