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中孔的TUD-1负载的氧化铬掺杂TiO2(Cr-TiO2)有望用于紫外光照射下光催化降解苯酚的催化剂.低角X射线衍射和红外结果证实该样品中TUD-1存在无定形和中孔硅酸盐框架. TUD-1的中孔结构进一步得到N2吸附-脱附的证实:为IV型等温线,并具有窄的孔径分布(3.9 nm)和高的比表面积(>490 m2/g).透射电镜结果表明,所制样品保持了纳米颗粒和多孔孔道结构. TUD-1中负载Cr-TiO2后使得带隙能量增加.与未负载的Cr-TiO2相比,所有TUD-1负载的Cr-TiO2光催化剂表现出更高的紫外光下降解苯酚的活性.其中Si/Ti摩尔比为30的Cr-TiO2/TUD-1样品的光催化活性最高(82%).苯酚的光催化降解遵循一级Langmuir吸附等温线.

Mesoporous Technische Universiteit Delft (TUD‐1)‐supported chromium oxide‐doped titania (Cr‐TiO2) was developed as a promising photocatalyst for phenol photodegradation under visible light irradiation. Low‐angle X‐ray diffraction and Fourier transform infrared spectroscopy results confirmed the amorphous and mesoporous silicate framework of TUD‐1 in TUD‐1‐supported Cr‐TiO2. The mesostructure of TUD‐1 was further verified via N2 adsorption–desorption analysis, which showed a type‐IV isotherm with a narrow average pore size distribution of 3.9 nm and high surface area of > 490 m2/g. Transmission electron microscopy analysis results indicated that TUD‐1‐supported Cr‐TiO2 contained nanoparticles and porous channels. An increase in band gap energy was observed after loading Cr‐TiO2 into TUD‐1. Compared with that of unsupported Cr‐TiO2, TUD‐1‐supported Cr‐TiO2 showed higher photocatalytic activity for phenol degradation under visi‐ble light irradiation. The TUD‐1 supported Cr‐TiO2 photocatalyst with a Si/Ti molar ratio of 30 ex‐hibited the highest photodegradation of phenol (82%) of the prepared samples. The photodegrada‐tion of phenol by the supported catalyst followed the Langmuir adsorption isotherm with first‐order kinetics.

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