Ordered mesoporous silicon carbide (OM-SiC) via polymer precursor nanocasting

Abstract

Ordered mesoporous SiC with high specific surface area (650-800 m(2) g(-1)) and well ordered pore structure was obtained via nanocasting of polycarbosilanes into SBA-15 and subsequent conversion of the polymer at 1300 degrees C.

Space‐Confined Formation of FePt Nanoparticles in Ordered Mesoporous Silica SBA‐15

“…Ordered mesoporous oxides were found to be excellent templates for the preparation of well-defined nanoparticles, nanowires or three-dimensional nanostructures. [17][18][19][20] [22][23][24] Composite materials, consisting of ferromagnetic particles and a high surface area porous matrix, can be used as magnetically separable adsorbents or heterogeneous catalysts. [25,26] Recently, a replica of large pore ordered mesoporous silica was made with Co 3 O 4 by Wang et al [27] with crystalline pore walls and weak ferromagnetic properties.…”

Metalorganic chemical vapor deposition of mesoporous SiTiOC nanostructured thin films

“…8) us clearly noticeable to lower angles from 1.14 to 1.05°and from 0.81 to 0.73°, respectively. This shift to lower angles is another evidence of well ordered mesoporous structure films formation with increasing deposition temperatures [18,26,27].…”

The Synthetic Strategy for Developing Mesoporous Materials through Nanocasting Route

“…Using SBA-15 or KIT-6 as template and xylene or benzene dissolved polycarbonsilane precursor followed by a series of thermal treatments, 2D hexagonal and 3D bicontinuous highly ordered mesopores SiC are obtained respectively [94]. Ordered Mesoporous SiC prepared from diff erent PCS and operation processes have diff erent surface area as r eported in literature (Figure 2.13) [95,96]. Th e task of forming mesoporous metal nitrides by metal nitrides precursors is very diffi cult only due to extremely low volume conversion of precursor into metal nitrides and due to this nanoparticles of GaN and TiN were obtained instead of nanowire using MCM-41 and SBA-15 template [126][127][128].…”