In:
CLEAN – Soil, Air, Water, Wiley, Vol. 37, No. 7 ( 2009-07), p. 527-533
Abstract:
Ti‐SBA‐15 materials with Ti incorporated into the framework of SBA‐15 and controllable Ti contents were successfully prepared via a post‐treatment route in supercritical CO 2 ‐ethanol solution, followed by calcination. The resultant Ti‐SBA‐15 materials were characterized by means of different techniques including X‐ray diffraction, X‐ray photoelectron spectroscopy, transmission electron microscopy, IR analysis, and N 2 sorption analysis. It was demonstrated that the resultant materials retained a structure similar to that of the parent SBA‐15, and Ti was incorporated into the framework of SBA‐15. At high Ti content, i.e, Si/Ti = 5:1, a TiO 2 phase formed and was coated onto the inner surface of SBA‐15 in addition to the incorporation of the Ti in the framework. The BET surface areas of the Ti‐SBA‐15 samples decreased with increasing Ti content. The presence of small amounts of H 2 O in the reaction medium may have resulted in some TiO 2 nanoparticles being uniformly distributed in the pores of the SBA‐15 accompanying the incorporation of Ti in the SBA‐15 framework.
Type of Medium:
Online Resource
ISSN:
1863-0650
,
1863-0669
DOI:
10.1002/clen.200900030
Language:
English
Publisher:
Wiley
Publication Date:
2009
detail.hit.zdb_id:
2270984-8
detail.hit.zdb_id:
2271097-8
SSG:
13
SSG:
14
Permalink