负载于 TiO2 Degussa P25 上的金属卟啉的光催化降解甲基橙。
Photocatalytic degradation of methyl orange over metalloporphyrins supported on TiO2 Degussa P25.
机构信息
School of Chemistry and Chemical Engineering, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, 510275, Guangzhou, China.
出版信息
Molecules. 2012 Jan 25;17(2):1149-58. doi: 10.3390/molecules17021149.
The photocatalytic activity of meso-tetraphenylporphyrins with different metal centers (Fe, Co, Mn and Cu) adsorbed on TiO(2) (Degussa P25) surface has been investigated by carrying out the photodegradation of methyl orange (MO) under visible and ultraviolet light irradiation. The photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance UV (DRS-UV-vis) and infrared spectra. Copper porphyrin-sensitized TiO(2) photocatalyst (CuP-TiO(2)) showed excellent activity for the photodegradation of MO whether under visible or ultraviolet light irradiation. Natural Bond Orbital (NBO) charges analysis showed that methyl orange ion is adsorbed easier by CuP-TiO(2) catalyst due to the increase of induced interactions.
已通过在可见和紫外光照射下光降解甲基橙（MO）来研究吸附在 TiO(2)（Degussa P25）表面上具有不同金属中心（Fe、Co、Mn 和 Cu）的中卟啉的光催化活性。通过 X 射线衍射（XRD）、扫描电子显微镜（SEM）、漫反射紫外可见光谱（DRS-UV-vis）和红外光谱对催化剂进行了表征。铜卟啉敏化 TiO(2) 光催化剂（CuP-TiO(2)）在可见或紫外光照射下对 MO 的光降解均表现出优异的活性。自然键轨道（NBO）电荷分析表明，由于诱导相互作用的增加，甲基橙离子更容易被 CuP-TiO(2)催化剂吸附。
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