A novel nanoporous graphitic composite

Abstract

A novel nanoporous composite containing micrographitic carbon layers is synthesized by preliminarily expanding the interlayer of an oxidized product of graphite using surfactant, followed by Si bridging/pillaring, and carbonization.

Preparation of TiO2, CeO2, and ZrO2 hierarchical structures in “one-pot” reactions

“…The result coincides with the double and single (centercenter) layer spacing of the parallel layer nanostructures, respectively. The pattern is very similar to that of the layer structure of an intercalated graphite oxide [14], which gave three diffraction peaks with d = 4.02, 2.04, and 1.38 nm, respectively. And the gallery height of layer structure of the intercalated graphite oxide was about 1.1 nm, very close to the gallery height of the layer nanostructure of T500 in this work.…”

“…This work implies that foam templates could be used to prepare metal oxides polycrystalline film, with foam structures (macropores) and inter-particles mesopores. Furthermore, several works [14][15][16] reported that the microscopic layer structure of graphite was used as template. They synthesized a novel nanoporous graphitic composite of silica and carbon from the layer graphite precursor, and then prepared a layer mesoporous carbon material by leaching silica components from the high temperature treatment products of degraded graphite layers.…”

Synthesis and Adsorption Characteristics of Nanoporous Graphite-Derived Carbon-Silica Composites

“…We have reported that nanoporous carbon/silica composites can be synthesized by hydrolyzing organic silicon alkoxides in the expanded interlayer of the oxidized product of graphite (Wang et al, 2002(Wang et al, , 2003. The obtained novel porous nanocomposite of carbon and silica has a very high surface area and presents a medium hydrophilicity between the typical activated carbon and hydrophilic silica particles.…”

Adsorption characteristics of nanoporous carbon–silica composites synthesized from graphite oxide by a mechanochemical intercalation method

“…The prepared GO has a higher order layered structure, presenting an XRD pattern with a sharp (001) peak at an identity period along c-axis (I c ) of 0.831 nm (2θ = 10.64 • ) and a smaller (002) peak with a repeating distance of 0.415 nm (2θ = 21.38 • ) [15]. The XRD pattern of surfactant-intercalated GOC 16 sample also shows a clear (001) peak at a larger I c value (2.372 nm, slightly greater than the reported one [18]) due to the layer expansion of GO (not shown here for simplicity).…”

“…In our previous paper, we have reported an effective soft-chemical route to obtain novel nanoporous carbon-silica composites from layered carbon precursor, graphite oxide (GO) [15][16][17]. The approach involves a series of colloidal and intercalation methods including GO layer delamination, layer pre-expansion with long chain surfactant, and interlayer hydrolysis of organic silicon species.…”