TiO₂ loaded on several substrates such as carbon fiber, aluminum plate, silica plate, and glass plate was prepared using the chemical vapor deposition (CVD) method for the photocatalytic reduction of Cr(VI) in water with the presence of ethanol under Ultraviolet (UV) illumination. As‐prepared samples were characterized by X‐Ray Diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), and scanning electron microscopy (SEM). The catalyst with TiO₂ loaded on carbon fiber possessed an extremely large surface area (1,463,91 m²/g), while the other catalysts possessed small surface areas (0.05–0.21 m²/g). The photocatalytic activity of TiO₂ loaded on carbon fiber, which was determined by the conversion of Cr(VI) and the degradation of chemical oxygen demand (COD), was much higher than that of other catalysts. The reusability of TiO₂ loaded on carbon fiber catalyst exhibited almost the same activity as the fresh catalyst. The results indicated that TiO₂ loaded on carbon fiber is feasible for practical application.

中文翻译：

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化学气相沉积在不同基材上合成TiO2以光催化还原水中的Cr（VI）

使用化学气相沉积（CVD）方法，在紫外光下，在乙醇存在下，在乙醇存在下，光催化还原水中的Cr（VI），制备了负载在几种基材（例如碳纤维，铝板，二氧化硅板和玻璃板上）上的TiO ₂。 UV）照明。制备的样品通过X射线衍射（XRD），X射线光电子能谱（XPS），Brunauer-Emmett-Teller（BET）和扫描电子显微镜（SEM）进行表征。负载在碳纤维上的TiO ₂催化剂具有极大的表面积（1,463,91 m ² / g），而其他催化剂具有较小的表面积（0.05–0.21 m ² / g）。TiO ₂的光催化活性由Cr（VI）的转化和化学需氧量（COD）的降解决定的碳纤维上的负载量要比其他催化剂高得多。负载在碳纤维催化剂上的TiO ₂的可重复使用性表现出与新鲜催化剂几乎相同的活性。结果表明，负载在碳纤维上的TiO ₂在实际应用中是可行的。