水热法合成可见光响应的B掺杂TiO_2及其光催化活性  

Synthesis of Visible Light Responsive B-Doped TiO_2 by Hydrothermal Method and Its Photocatalytic Activity in Phenol Degradation

作　　者：于爱敏[1] 武光军[1] 严晶晶[1] 郑春明[1] 章福祥[1] 杨雅莉[1] 关乃佳[1] 

机构地区：[1]南开大学化学学院新催化材料科学研究所,天津300071

出　　处：《催化学报》2009年第2期137-141,共5页

基　　金：国家自然科学基金(20573059;20777039);国家重点基础研究发展计划(973计划;2003CB615801);科技部国际科技合作计划(2007DFA90720)

摘　　要：以硼酸和钛酸丁酯为原料,采用水热法一步合成了B掺杂的纳米TiO2.采用X射线衍射、紫外-可见光谱、透射电镜以及X射线光电子能谱对所得样品进行了表征.结果表明,该方法制备的B-TiO2具有明显的可见光吸收,并且少量B的掺杂不会对TiO2的晶型和粒径造成很大影响.掺杂的B以B-O-Ti的形式存在,有利于可见光活性的提高.苯酚的光催化降解反应实验表明,水热法合成的B-TiO2在可见光下具有较好的光催化活性,反应5h后苯酚降解率可达100%.Boron-doped TiO2 was successfully synthesized by the hydrothermal method. Characterization results of X-ray diffraction, ultraviolet-visible spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy showed that the doping of B did not influence the crystal phase and the particle size of TiO2, and B-O-Ti bonds were formed. Furthermore, the catalyst showed reasonable visible light response. Phenol degradation was used as a probe reaction to evaluate the photocatalytic activity of B-doped TiO2 under visible light, and excellent photocatalytic activity （100 % phenol degradation in 5 h） was achieved.

关 键 词：二氧化钛 硼 掺杂 水热法 可见光 苯酚 降解 

分 类 号：O643.36[理学—物理化学]