酞菁钴/SnO_2纳米复合材料的原位合成及可见光光催化  

In-situ Synthesis of Cobalt Phthalocyanine/SnO_2 Nanocomposite and Its Photocatalytic Activity Under Visible Light

作　　者：王芳[1] 潘海波[1] 黄金陵[1] 陈耐生[1] 范燕华[1] 

机构地区：[1]福州大学功能材料研究所,福州350002

出　　处：《应用化学》2006年第3期246-250,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(50472001);福建省教育厅(JB03008)资助项目

摘　　要：以Co(Ⅱ)为模板,通过邻苯二腈在SnO2纳米颗粒表面直接原位合成酞菁钴(Co(Ⅱ)Pc)/SnO2纳米复合材料,并采用XRD、TG-DTA、UV-V is和FT-IR等测试技术对合成产物进行了表征,同时对材料进行了可见光光催化反应实验。实验结果表明,采用原位合成方法能够在SnO2纳米表面上原位生成Co(Ⅱ)Pc,在可见光照射下,复合材料首先由CoPc吸收可见光,激发电子通过Co—O键注入至纳米SnO2导带,并与O2气作用形成超氧自由基,在150 m in内使罗丹明B的可见光降解率达87.1%,且其催化活性经10次循环使用,稳定性较好。Cobalt phthalocyanine/SnO2 nanocomposite was synthesized in-situ through the annulation of dicyanobenzene on the surface of SnO2 nanoparticles with Co （ Ⅱ ） as template. The prepared products were characterized by means of XRD, DTA, UV-Vis and FT-IR methods. The photoeatalytic activity of materials under visible light was also discussed. The experimental results indicate that Cobalt phthalocyanine and SnO2 are indeed synthesized with the in-situ method. Under the visible light irradiation, CoPc molecules are excited first and then the excited electrons are injected into the conduction band of SnO2 through the Co-O chemical bond. Superoxide radicals are formed by reaction with O2, the degradative rate of Rodanming B is up to 87.1% within 150 min. The degradative rate is very stable during circulating degradation for 10 times.

关 键 词：SNO2 酞菁钴 纳米复合材料 原位合成 光催化 

分 类 号：O643[理学—物理化学]