Synthesis of F-doped flower-like TiO2 nanostructures with high photoelectrochemical activity
Synthesis of F-doped flower-like TiO2 nanostructures with high photoelectrochemical activity
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DOI：
10.1021/la703098g
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发表时间：
2008-04-01
期刊：
影响因子：
3.9
通讯作者：
Chen, Aicheng
中科院分区：
文献类型：
--
作者：
Wu, Guosheng;Wang, Jingpeng;Chen, Aicheng
我们报道了一种在氢氟酸溶液中低温水热条件下在钛表面直接生长氟掺杂花状二氧化钛纳米结构的新颖而简便的方法。系统研究了温度、反应时间、氢氟酸浓度等实验参数对F掺杂花状二氧化钛纳米结构形貌和光电催化活性的影响。HF的存在和反应时间对F掺杂的花状二氧化钛纳米结构的形成起着重要的作用。与目前被认为是最好的商用TiO2光催化剂之一的P-25相比，合成的新型F掺杂的TiO2花状纳米材料具有良好的结晶性，并具有较高的分解水和光降解有机污染物的光电化学活性。本研究提供了一种简单而新颖的方法来合成F掺杂的二氧化钛纳米结构材料，为实际应用做好准备，如光降解废水。
We report on a novel and facile approach for the direct growth of F-doped flower-like TiO2 nanostructures on the surface of Ti in HF Solutions under low-temperature hydrothermal conditions. The influence of the experimental parameters such as temperature, reaction duration, and the HF concentration on the morphology and photoelectrocatalytic activity of the formed F-doped flower-like TiO2 nanostructures was systematically studied. The presence of HF and the reaction time play an important role in the formation of the F-doped flower-like TiO2 nanostructures. The synthesized novel F-doped TiO2 flower-like nanomaterials possess good crystallinity and exhibit high photoelectrochemical activity for water-splitting and photodegradation of organic pollutants compared with P-25, which is currently considered to be one of the best commercial TiO2 photocatalysts. The approach described in this study provides a simple and novel method to synthesize F-doped TiO2 nanostructured materials that are ready for practical applications such as the photodegradation of wastewater.