【摘 要】
：
为提高TiO2纳米晶在光催化过程中对可见光的利用效率,采用化学吸附的方法分别制备了四苯并卟啉锌、中位-四(酰氯基亚甲基)苯并卟啉锌和中位-四(羧基亚甲基)苯并卟啉锌修饰的T
【机 构】
：
中国科学院山西煤炭化学研究所,中国科学院研究生院,
论文部分内容阅读
为提高TiO2纳米晶在光催化过程中对可见光的利用效率,采用化学吸附的方法分别制备了四苯并卟啉锌、中位-四(酰氯基亚甲基)苯并卟啉锌和中位-四(羧基亚甲基)苯并卟啉锌修饰的TiO2纳米晶,并将其用于氙灯辐照下曙红B的降解。由于卟啉吸收可见光后,激发态电子能转移到TiO2的导带,敏化后TiO2的光降解效率均有所提高,其中中位-四(羧基亚甲基)苯并卟啉锌因其与TiO2有效地结合,降解效率最高。
In order to improve the visible light utilization efficiency of TiO2 nanocrystals in the photocatalytic process, Zn (Ⅱ), Zn (Ⅳ) -tetrazodicarboxylate - Tetrakis (carboxymethylene) benzoporphyrin modified TiO2 nanocrystals were synthesized and used for the degradation of eosin B under xenon lamp irradiation. Since the porphyrin absorbs visible light, the excited state electrons can transfer to the conduction band of TiO2. The photodegradation efficiency of TiO2 after sensitization has been improved. Among them, Zn (II) -tetrakis (carboxymethylene) TiO2 effectively combined, the highest degradation efficiency.
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