中文摘要：

报道了酞菁钴（CoPc）分子原位自组装于纳米 SnO2 颗粒表面, CoPc 大环分子与 SnO2 表面形成 Co—O轴向相互作用, 测定了原位合成方法（标记为 i）制备的 CoPc/SnO2（i）与浸渍法（标记为 d）制备 CoPc/SnO2（d）间的结合特性, 并进行了可见光光催化表征及 CoPc 敏化机理探讨. 结果表明, 在结合位点数相当的情况下, CoPc/SnO2（i）结合常数比 CoPc/SnO2（d）的高两个数量级, 前者的光催化效率亦比后者高 32.5%（光照 150 min）, 且 CoPc/SnO2（i）光催化稳定性较高（重复十次循环使用）. 其 CoPc 敏化 SnO2 的机理为, 由于敏化剂与半导体之间存在的强相互作用, 不仅增强了光生电荷在 CoPc 的 LUMO 与 SnO2 半导体导带间的导入效率及光生电荷对的分离效率, 而且提高了敏化剂的负载稳定性与循环光催化效率的持续性.

英文摘要：

Cobalt phthalocyanine （CoPc） was synthesized and self-assembled on the surface of nanoscale tin dioxide （SnO2） by in-situ process, marked as i, and Co-O interaction was verified to conjugate axially between macromolecule （CoPc） and SnO2 in CoPc/SnO2（i）. The results indicated that the binding constant of CoPc/SnO2（i） was two-order higher than that of CoPc/SnO2（d） synthesized by dipping process, marked as d, while the numbers of binding sites were comparable in both samples. The degradation rate in the photocatalytic activity of CoPc/SnO2（i） was 32.5% higher than that of CoPc/SnO2（d） under visible-light irradiation for 150 min due to the effective electron separation and energy injection from LUMO of CoPc to conduction band of SnO2 for CoPc/SnO2（i） based on the strong interaction between CoPc and SnO2. The degradation recyclability of CoPc/SnO2（i） retained 48.8% in 10 times under the same circular photocatalytic process.