Preparation and characterization of the continuous titanium-doped ZrO2 mesoporous fibers with large surface area

Autor:	Guoqiang Qin, Hua Fu, Fengqiu Ji, Luyi Zhu, Guanglei Zhang, Gang Yu, Jinjin Zhao
Rok vydání:	2013
Předmět:	Materials science Mechanical Engineering Doping chemistry.chemical_element Catalysis Ion chemistry X-ray photoelectron spectroscopy Chemical engineering Mechanics of Materials Organic chemistry General Materials Science Mesoporous material Spinning Titanium Sol-gel
Zdroj:	Journal of Porous Materials. 21:105-112
ISSN:	1573-4854 1380-2224
DOI:	10.1007/s10934-013-9753-8
Popis:	The continuous titanium-doped ZrO2 mesoporous fibers with a large surface area (190 m2 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 ZrOCl2·8H2O 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 spectroscopy 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 ZrO2 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e67d9195a25dcb028f3d52f2f3603c6b https://doi.org/10.1007/s10934-013-9753-8 Zobrazit plný text záznamu Full text from SpringerLink