Influence of CTAB molar ratio in tuning the texture of rice husk silica into MCM 41 and SBA-16

An interesting observation of achieving both MCM 41 and SBA-16 from rice husk ash, by varying the CTAB molar ratio is reported. The work furnishes the first report on achieving SBA-16 from rice husk ash derived silica using CTAB as the single surfactant. The meso phase has been characterized by low...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2013-10, Vol.109, p.70-73
Main Authors: Renuka, N.K., Praveen, A.K., Anas, K.
Format: Article
Language:English
Subjects:
adsorption
Ashes
Electron microscopy
husk ash
MCM 41
nitrogen
Porosity
rice hulls
Rice husk ash
SBA-16
scanning electron microscopy
silica
Silicon dioxide
Surface area
Surface layer
Surfactants
Texture
Three dimensional
transmission electron microscopy
Tuning
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An interesting observation of achieving both MCM 41 and SBA-16 from rice husk ash, by varying the CTAB molar ratio is reported. The work furnishes the first report on achieving SBA-16 from rice husk ash derived silica using CTAB as the single surfactant. The meso phase has been characterized by low angle XRD, SEM, TEM, and N2 adsorption study. A reduction in CTAB to SiO2 molar ratio by 0.005 altered the mesoporous texture of silica from MCM 41 to SBA-16 under the prevailing conditions. MCM 41 possessed honeycomb like pores with thin walls, and exhibited surface area 807m2/g. SBA-16, with 226m2/g surface area exhibited 3D cubic cage structured pores with thick microporous walls of size 8.9nm. The decisive role of surfactant concentration in fabricating the mesoporous texture of silica is demonstrated in this study. [Display omitted] •MCM41 and SBA16 like materials prepared using the same synthetic procedure.•Variation in surfactant molar ratio drastically altered the meso texture.•Rice husk identified as an economic source for SBA 16 through greener route.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2013.07.074