Langmuir 2016, 32, 5802

Further Insight into the Definite Morphology and Formation
Mechanism of Mesoporous Silica KCC‑1

The unique three-dimensional pore structure of KCC-1
has attracted significant attention and has proven to be different compared
to other conventional mesoporous silica such as the MCM-41 family,
SBA-15, or even MSN nanoparticles. In this research, we carefully examine
the morphology of KCC-1 to define more appropriate nomenclature.
We also propose a formation mechanism of KCC-1 based on our experimental
evidence. Herein, the KCC-1 morphology was interpreted mainly
on the basis of compiling all observation and information taken from
SEM and TEM images. Further analysis on TEM images was carried out.
The gray value intensity profile was derived from TEM images in order to
determine the specific pattern of this unique morphology that is found
to be clearly different from that of other types of porous spherical-like
morphologies. On the basis of these results, the KCC-1 morphology would
be more appropriately reclassified as bicontinuous concentric lamellar morphology. Some physical characteristics such
as the origin of emulsion, electrical conductivity, and the local structure of water molecules in the KCC-1 emulsion were
disclosed to reveal the formation mechanism of KCC-1. The origin of the KCC-1 emulsion was characterized by the
observation of the Tyndall effect, conductometry to determine the critical micelle concentration, and Raman spectroscopy.
In addition, the morphological evolution study during KCC-1 synthesis completes the portrait of the formation of mesoporous
silica KCC-1.