摘要
为了增强TiO_2中电子和空穴的分离效率,通过喷雾高温分解的方法制备了TiO_2多孔微球、TiO_2/WO_3多孔微球。多孔微球样品通过SEM和XRD进行表征。TiO_2/WO_3多孔微球与TiO_2多孔微球进行比较显示出较低的发光强度,这说明WO_3的引入能够增强TiO_2电子和空穴的分离效率。在太阳光的照射下,TiO_2/WO_3多孔微球无论是对乙醛的降解速率影响还是生成CO_2的速率都显示出最高的光催化活性,这可能是由于电子、空穴复合的抑制所导致的。通过此方法合成的TiO_2/WO_3多孔微球在能量、环境保护、生物及其他重要领域将有重大的应用潜力。
In order to enhance charge separation of TiO2,TiO2 and TiO2/WO3 porous microspheres were prepared by ultrasonic spray pyrolysis. The microspheres were characterized with SEM,XRD. The PL intensities of TiO2/WO3 porous microspheres are lower than that of TiO2 porous microspheres,which suggests the introducing of WO3 enhances charge separation of TiO2. Under solar irradiation,TiO2/WO3 porous microspheres showed higher photocatalytic activity for acetaldehyde degradation and CO2 generation compared with TiO2,which could be ascribed to the suppression of electron-hole pair recombination. Also,it is believed that the novel porous TiO2/WO3 porous microspheres by this synthesis route might offer a great potential in energy,environmental protection,bioengineering,and many other important areas.
作者
杨继凯
成名
成丽波
寇艳强
亢佳琪
YANG Jikai, CHENG Ming, CHENG Libo, KOU Yanqiang, KANG Jiaqi(School of Science, Changehun University of Science and Technology, Changchun 13002)
出处
《长春理工大学学报（自然科学版）》
2017年第6期82-85,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金(51502023)
