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Title: Templating Mesoporous Hierarchies in Silica Thin Films Using the Thermal Degradation of Cellulose Nitrate

Abstract

Materials containing a hierarchical pore structure (i.e. large pores leading to small pores) are highly desirable because they combine the advantages of high surface area with the rapid mass transport. Mesoporous SiO2 with hierarchical pore structure was prepared by a novel dual templating approach using a combination of cellulose nitrate and surfactants as the templates. Both ionic and nonionic surfactants, or mixtures of surfactants, in conjunction with cellulose nitrate were used as the pore templates. Low angle XRD patterns show well-defined pore structures and BET shows surface areas from 500 to over 800m2/g, with tunable bimodal or trimodal pore-size distributions from 18Å to 0.3µm. The hierarchical pore structure can be controlled by manipulating the template composition.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
902671
Report Number(s):
PNNL-SA-54344
20291; 20291a; TRN: US200718%%51
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Microporous and Mesoporous Materials, 99(3):308-318; Journal Volume: 99; Journal Issue: 3
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CELLULOSE; NITRATES; PORE STRUCTURE; SILICA; SURFACE AREA; THERMAL DEGRADATION; THIN FILMS; reverse micelles; combustion synthesis; porous silica; nanoparticles; powders; particles; composite; mechanism; Environmental Molecular Sciences Laboratory

Citation Formats

Li, Xiaohong S., Fryxell, Glen E., Wang, Chong M., and Young, James A. Templating Mesoporous Hierarchies in Silica Thin Films Using the Thermal Degradation of Cellulose Nitrate. United States: N. p., 2007. Web. doi:10.1016/j.micromeso.2006.09.037.
Li, Xiaohong S., Fryxell, Glen E., Wang, Chong M., & Young, James A. Templating Mesoporous Hierarchies in Silica Thin Films Using the Thermal Degradation of Cellulose Nitrate. United States. doi:10.1016/j.micromeso.2006.09.037.
Li, Xiaohong S., Fryxell, Glen E., Wang, Chong M., and Young, James A. Sat . "Templating Mesoporous Hierarchies in Silica Thin Films Using the Thermal Degradation of Cellulose Nitrate". United States. doi:10.1016/j.micromeso.2006.09.037.
@article{osti_902671,
title = {Templating Mesoporous Hierarchies in Silica Thin Films Using the Thermal Degradation of Cellulose Nitrate},
author = {Li, Xiaohong S. and Fryxell, Glen E. and Wang, Chong M. and Young, James A.},
abstractNote = {Materials containing a hierarchical pore structure (i.e. large pores leading to small pores) are highly desirable because they combine the advantages of high surface area with the rapid mass transport. Mesoporous SiO2 with hierarchical pore structure was prepared by a novel dual templating approach using a combination of cellulose nitrate and surfactants as the templates. Both ionic and nonionic surfactants, or mixtures of surfactants, in conjunction with cellulose nitrate were used as the pore templates. Low angle XRD patterns show well-defined pore structures and BET shows surface areas from 500 to over 800m2/g, with tunable bimodal or trimodal pore-size distributions from 18Å to 0.3µm. The hierarchical pore structure can be controlled by manipulating the template composition.},
doi = {10.1016/j.micromeso.2006.09.037},
journal = {Microporous and Mesoporous Materials, 99(3):308-318},
number = 3,
volume = 99,
place = {United States},
year = {Sat Feb 10 00:00:00 EST 2007},
month = {Sat Feb 10 00:00:00 EST 2007}
}