DBU液相催化法原位合成四苯氧基酞菁锌/ZnO复合材料的制备及光催化选择性研究

在负载于氧化铟锡(ITO)导电玻璃上、哑铃状纳米ZnO表面配位未饱和锌离子作为“模板”，以苯氧基邻苯二腈作为“分子碎片”，利用DBU液相催化法，在亲水性纳米ZnO表面，原位合成疏水性四苯氧基酞菁锌(ZnTPPc)。通过多种表征手段，分析证实了所合成的ZnTPPc分子结构、ZnTPPc/ZnO界面及光生电荷转移特性。在可见光下，分别以亲水性亚甲基蓝(MB)、疏水性苯酚(PL)及其混合液为待降解反应物，定量分析疏水性ZnTPPc/ZnO复合材料对降解疏水性PL的光催化选择性。结果表明： 原位合成ZnTPPc在ZnO表面呈现单分子层，具有较好的疏水性能，ZnTPPc可优先选择性降解疏水性PL，且在可见光光催化中对PL的相对降解效率是对MB分子的1.21倍。

Preparation of Four Phenoxy Phthalocyanine Zinc/ZnO Composites with in-situ Method by DBU Liquid Phase Catalyst and Its Photocatalytic Selectivity

Hydrophobic four phenoxyphthalocyanine zinc (ZnTPPc) was prepared on the surface of hydrophilic ZnO nanomaterialson the indium tin oxide (ITO) conductive glasswith in-situ synthesis by using DBU as liquid phase Catalyst. ZnTPPc was cyclized with phenoxy phthalonitrile as a molecular fragment and unsaturated zinc ions with dumbbellshaped ZnO(ZnO ZDs) surface as a template. The structure of ZnTPPc molecule and the characteristics of photogenerated charge in ZnTPPc/ZnO interface were confirmed by a variety of characterization methods. The photocatalytic selectivity of ZnTPPc/ZnO for the degradation of hydrophobic phenol (PL) was quantitatively analyzed by using hydrophilic methylene blue (MB), hydrophobic (PL) and their mixtures. The results show that hydrophobic ZnTPPc is synthesized by in-situ method on ZnO surface, presenting a monomolecular layer. The hydrophobic PL was preferentially adsorbed by ZnTPPc, and the relative degradation efficiency of PL is 1.3 times as high as that of MB under visible light irradiation.