Highly Crystalline and Conductive Nitrogen‐Doped Mesoporous Carbon with Graphitic Walls and Its Electrochemical Performance

Abstract

We present a rational and simple methodology to fabricate highly conductive nitrogen-doped ordered mesoporous carbon with a graphitic wall structure by the simple adjustment of the carbonization temperature of mesoporous carbon nitride without the addition of any external nitrogen sources. By simply controlling the heat-treatment temperature, the structural order and intrinsic properties such as surface area, conductivity, and pore volume, and the nitrogen content of ordered graphitic mesoporous carbon can be controlled. Among the materials studied, the sample heat-treated at 1000 °C shows the highest conductivity, which is 32 times higher than that for the samples treated at 800 °C and retains the well-ordered mesoporous structure of the parent mesoporous carbon nitride and a reasonable amount of nitrogen in the graphitic framework. Since these materials exhibit high conductivity with the nitrogen atoms in the graphitic framework, we further demonstrate their use as a support for nanoparticle fabrication without the addition of any external stabilizing or size-controlling agent, as well as the anode electrode catalysts. Highly dispersed platinum nanoparticles with a size similar to that of the pore diameter of the support can be fabricated since the nitrogen atoms and the well-ordered porous structure in the mesoporous graphitic carbon framework act as a stabilizing and size-controlling agent, respectively. Furthermore the Pt-loaded, nitrogen-doped mesoporous graphitic carbon sample with a high conductivity shows much higher anodic electrocatalytic activity than the other materials used in the study.

Nitrogen-Functionalized Ordered Mesoporous Carbons as Multifunctional Supports of Ultrasmall Pd Nanoparticles for Hydrogenation of Phenol

“…9 Additionally, compared with amorphous supports, the ordered mesoporous supports with high surface area and large pore volume can favor mass transfer and show the confinement effect to prevent the metal NPs growth as well, which are all beneficial to the efficient catalysis. [10][11][12] Therefore, combining the confinement effect and hybrid doping of the ordered mesoporous supports, the N-functionalized (e.g. nitrogen) mesoporous nanomaterial can be an ideal alternative catalyst supports for the immobilization and stabilization of ultrasmall metal NPs.…”

Adsorption studies of Pb(II) and Cu(II) ions on mesoporous carbon nitride functionalized with melamine-based dendrimer amine

“…In recent years, the incorporation of nitrogen into carbon nanostructures to obtain nitride carbons due to their unique optical, electronic, mechanical and energy storage properties has aroused much attention (Thomas et al 2008;Kawaguchi et al 2004;Kroke and Schwarz 2004).Their ability as conductors, precursors of superhard materials, ceramics and their potential applications as catalysts for the selective adsorption of small organic molecules in fuel cells and in dyes have been reported (Jin et al 2009;Datta et al 2011;Ansari et al 2012;Song et al 2012). They are also used in adsorption and chromatographic separation systems, battery electrodes, nanoreactors, capacitors and biomedical device.…”

A dual templating route to three-dimensionally ordered mesoporous carbon nanonetworks: tuning the mesopore type for electrochemical performance optimization

“…The structure characteristics of the as-prepared OMC-S, OMCNW-c, and OMCNW-h were determined by N 2 sorption analysis. 34,35 As shown in the Raman spectroscopy of Figure 2e, the small intensity ratio of I D /I G is observed on OMCNW-c (0.931) and OMCNW-h (0.942), even lower than that of graphene, suggests a high crystalline degree of carbon in the OMCs. An indistinct capillary condensation step at P/P 0 = 0.20-0.40 indicates a typical small mesopores.…”