Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710069, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Jul;111:161-8. doi: 10.1016/j.saa.2013.02.021. Epub 2013 Feb 21.
Three porphyrins containing different functional groups (-OH, C-O2C2H5, -COOH), 5-(4-hydroxy) phenyl-10,15,20-triphenyl porphyrin (1a), 5-(4-ethylacetatatomethoxy) phenyl-10,15,20-triphenyl porphyrin (1b), 5-(4-carboxylatomethoxy) phenyl-10,15,20-triphenyl porphyrin (1c), were synthesized and characterized spectroscopically. The CuPp(2a, 2b, 2c)-TiO2 photocatalysts were then prepared and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (UV-vis-DRS), Fourier-transform infrared spectroscopy (FT-IR). The photocatalytic activities of the photocatalysts were investigated by carrying out the photodegradation of 4-nitrophenol in aqueous solution under simulated solar irradiation. It was found that the CuPp(2a, 2b, 2c)-TiO2 enhanced the photocatalytic efficiency of bare TiO2 in photodegrading the 4-NP due to the interaction between CuPp(2a, 2b, 2c) and TiO2, resulted in the enhancement of the photogenerated electron-hole separation. The reasons of this enhanced photocatalytic activity were also discussed. Based on the present study, it could be considered as a promising photocatalyst for the further industrial application.
三种含有不同官能团（-OH、C-O2C2H5、-COOH）的卟啉，5-（4-羟基）苯基-10,15,20-三苯基卟啉（1a）、5-（4-乙氧羰基甲氧基）苯基-10,15,20-三苯基卟啉（1b）、5-（4-羧基甲氧基）苯基-10,15,20-三苯基卟啉（1c），通过光谱学方法进行了合成和表征。然后通过 X 射线衍射（XRD）、透射电子显微镜（TEM）、X 射线光电子能谱（XPS）、紫外可见漫反射光谱（UV-vis-DRS）、傅里叶变换红外光谱（FT-IR）对 CuPp（2a、2b、2c）-TiO2 光催化剂进行了制备和表征。在模拟太阳光照射下，通过在水溶液中光降解 4-硝基苯酚考察了光催化剂的光催化活性。结果发现，由于 CuPp（2a、2b、2c）与 TiO2 之间的相互作用，CuPp（2a、2b、2c）-TiO2 增强了 TiO2 光降解 4-NP 的光催化效率，从而增强了光生电子-空穴的分离。还讨论了这种增强光催化活性的原因。基于本研究，可以将其视为一种很有前途的光催化剂，可用于进一步的工业应用。
