“Mesoporous silica-titania composed materials”

PAULA V. MESSINA, MARCELA A. MORINI, MARÍA B. SIERRA, PABLO C. SCHULZ

JOURNAL OF COLLOID AND INTERFACE SCIENCE

Año: 2006 vol. 300 p. 270 - 278

0021-9797

Abstract Titania mesosized particles were obtained by TiCl4 hydrolysis in Aerosol OT/water/n-hexane microemulsion. These particles were incorporated in surfactant templated silica mesoporous materials ofMCM-41 and MCM-50 structures. Results depended on the surfactant: hexadecyltrimethylammonium bromide templated materials retained the honeycomb structure with small modifications in their characteristics. The dodecyltrimethylammonium bromide templated material changed from honeycomb to lamellar structure when the titania particles were included, with dramatic changes in the structure characteristics. The didodecyldimethylammonium bromide templated lamellar structure was retained after TIO2 inclusion, with a slight increase in the specific area, pore diameter and pore walls thickness.4 hydrolysis in Aerosol OT/water/n-hexane microemulsion. These particles were incorporated in surfactant templated silica mesoporous materials ofMCM-41 and MCM-50 structures. Results depended on the surfactant: hexadecyltrimethylammonium bromide templated materials retained the honeycomb structure with small modifications in their characteristics. The dodecyltrimethylammonium bromide templated material changed from honeycomb to lamellar structure when the titania particles were included, with dramatic changes in the structure characteristics. The didodecyldimethylammonium bromide templated lamellar structure was retained after TIO2 inclusion, with a slight increase in the specific area, pore diameter and pore walls thickness.2 inclusion, with a slight increase in the specific area, pore diameter and pore walls thickness. © 2006 Elsevier Inc. All rights reserved.2006 Elsevier Inc. All rights reserved. Keywords: Mesoporous material; Silica–titania material; Inverse microemulsion templated particlesMesoporous material; Silica–titania material; Inverse microemulsion templated particles