标题：Preparation and characterization of the continuous titanium-doped ZrO_2 mesoporous fibers with large surface area
作者：Gang Yu;Luyi Zhu;Guanglei Zhang;Guoqiang Qin;Hua Fu;Fengqiu Ji;Jinjin Zhao
作者机构：[Yu, G] School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;[ Zhu, L] State Key Laboratory of Crys 更多
通讯作者地址：[Yu, G]Shijiazhuang Tiedao Univ, Sch Mat Sci & Engn, Shijiazhuang 050043, Peoples R China.
来源：Journal of porous materials
关键词：Zirconia mesoporous fibers;Sol-gel;Hydrolysis-condensation process;Dry-spinning
摘要：The continuous titanium-doped ZrO_2 mesoporous fibers with a large surface area (190 m ~2 g~(-1), TZ50-400) have been prepared by the sol-gel method coupled with the chemical template route. In the formation process, the self-induced acid environment of ZrOCl_2-8H_2O in ethanol solution was utilized to avoid a rapid hydrolysis process and the viscous sol precursors were successfully obtained for spinning fibers. X-ray photoelectron spec-troscopy and UV-vis diffuse reflectance spectra were used to study the chemical environment of surface Ti(Ⅳ) and Zr((Ⅳ)) ions. The findings disclose that the partial Ti atoms (less than 30 %) enter into the ZrO_2 lattice and occupy the positions of Zr atoms, while the excess Ti atoms construct the linear Ti-O-Ti chains inside the extra framework, being favorable to prevent the collapse of meso structure.