Institute of Inorganic Chemistry, Academy of Science of the Czech Republic, 250 68 Husinec-Rez, Czech Republic.
ACS Appl Mater Interfaces. 2010 Feb;2(2):575-80. doi: 10.1021/am9007598.
Nanosized boron(III) oxide-doped titania was prepared by homogeneous hydrolysis of titanium oxo-sulfate with urea in aqueous solutions in the presence of amorphous boron. The prepared samples were annealing at 700 degrees C. The structure of as-prepared samples was characterized by X-ray powder diffraction (XRD) and selected area electron diffraction (SAED) and surface area (BET) and porosity determination (BJH). The morphology and microstructure characteristics were obtained by scanning electron microscopy (SEM) and high-resolution electron microscopy (HRTEM). The method of UV/vis diffuse reflectance spectroscopy was employed to estimate band gap energies of the boron-doped titania. The photoactivity of the prepared samples was assessed by the photocatalytic decomposition of Orange II dye in an aqueous slurry during irradiation at 365 and 400 nm wavelength. The prepared titania samples doped with boron(III) oxide showed better photocatalytic activity in comparison with the reference TiO(2) sample. These photocatalysts showed better photocatalytic performance under visible-light irradiation.
纳米级三氧化二硼掺杂二氧化钛是通过在水相溶液中用钛氧硫酸盐与尿素均匀水解，在无定形硼存在下制备的。制备的样品在 700°C 下退火。通过 X 射线粉末衍射（XRD）和选区电子衍射（SAED）以及比表面积（BET）和孔隙率测定（BJH）对所制备的样品的结构进行了表征。通过扫描电子显微镜（SEM）和高分辨率电子显微镜（HRTEM）获得了形貌和微观结构特征。采用紫外/可见漫反射光谱法估计了硼掺杂二氧化钛的能带隙能量。通过在 365nm 和 400nm 波长照射下，在水悬浮液中光催化分解橙色 II 染料来评估所制备样品的光催化活性。与参考 TiO2 样品相比，掺杂三氧化二硼的二氧化钛样品表现出更好的光催化活性。这些光催化剂在可见光照射下表现出更好的光催化性能。
