摘要
采用Alder法合成四羟基苯基卟啉,并用四种醋酸盐:醋酸锌,醋酸镍,醋酸铜,醋酸钴与原卟啉合成了相应4种金属卟啉(MTHPP).采用金属卟啉为敏化剂,并与蒸汽热法制备的纯锐钛矿型TiO2作用,得到相应的金属卟啉敏化TiO2复合光催化剂.利用红外、紫外、SEM、和XRD对所得金属卟啉以及金属卟啉-TiO2复合光催化剂进行了表征和分析.结果表明,所合成的金属卟啉均为目标化合物,金属卟啉负载于TiO2表面,未改变TiO2的晶型和形貌.金属卟啉与TiO2之间存在氢键的作用力.可见光降解亚甲基蓝(MB)实验结果表明,用锌卟啉(ZnTHPP)敏化的复合催化剂性能最好,复合催化剂性质稳定,可重复使用多次.
The original porphyrin of meso-5, 10, 15, 20-tetra （4-hydroxylphenyl） porphyrin （THPP） was synthesized by Alder method. Four metal porphyrin complexes of original porphyrin with Zn^2 ＋ , Ni^2＋ , Cu^2＋ , Co^2＋ were synthesized by the method of room temperature solid state synthesis, denoted as MTHPP. Using four kinds of metal porphyrin（MTHPP） as sensitizer, anatase TiO2 samples prepared by stream method were impregnated with metal porphyrin to form MHTPP/TiO2 composite photoeatalysts. The photocatalysts were characterized by IR, VU-Vis, SEM, and XRD. The results showed that the crystal structure and morphology of TiO2 were not effected by the exist of porphyrin on its surface. The photoeatalytie activity of MHTPP/TiO2 composite photocatalysts were investigated by carrying out the photodegradation of methylene blue （MB） in aqueous suspension and under visible light. The degradation test results show that ZnTHPP/TiO2 composite exhibited the best performance among the four composite catalysts. The photocatalysts show good stability under irradiation conditions and they continued to maintain good photocatlytic activity also after several cycles.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2011年第5期435-441,共7页
Journal of Molecular Catalysis(China)
基金
陕西省科技计划项目(2011k103-02)
教育部博士点基金(20096118110008)
西安市科技创新计划(CXY09025)
西安理工大学优秀博士学位论文研究基金项目(108
|211005)
西安理工大学青年科学研究计划项目(108
|211011)
