标题：Preparation of TiO_2 Continuous Fibers with Oxygen Vacancies and Photocatalytic Activity
作者：NAN BAO;GUANG-BIN YIN;ZHEN-TAO WEI
作者机构：Production Editor, Solid State Phenomena, School of Environmental Science and Engineering, Shandong University, Ji\'nan, PR. Chin
摘要：TiO_2 continuous fibers were prepared by a modified sol-gel method combined with centrifugal spinning and different heat treatment processes. The prepared fibers were characterized by TG-DSC, XRD, SEM, N_2 adsorption-desorption and XPS. The photocatalytic degradation of X-3B aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The results indicated that heat treatment in steam was conductive to the rapid nucleation of anatase nanocrystal and could effectively suppress the anatase-rutile transformation. Compared with samples calcined in air, products heat treated in steam were long fibers with oxygen vacancies and abundant mesoporous structures, which enhanced their photocatalytic activities.