Silicon nanoparticles trapped in an ordered mesoporous carbon composite were prepared by a one-step self-assembly with solvent evaporation using the triblock copolymer Pluronic F127 and a resorcinol-formaldehyde polymer as the templating agent and carbon precursor respectively. Such a one-pot synthesis of Si/ordered mesoporous carbon nanocomposite is suitable for large-scale synthesis. Characte...

2D nitrogen-doped mesoporous carbon (NMC) is synthesized by using a mesoporous silica film as hard template, which is then investigated as a non-precious metal catalyst for the oxygen reduction reaction (ORR). The effect of the synthesis conditions on the silica template and carbon is extensively investigated. In this work, we employ dual templates-viz. graphene oxide and triblock copolymer F12...

We report the detection of a feature at 65μm and a broad feature around 100μm in the far-infrared spectra of the diffuse emission from two active starforming regions, the Carina nebula and Sharpless 171. The features are seen in the spectra over a wide area of the observed regions, indicating that the carriers are fairly ubiquitous species in the interstellar medium. A similar 65μm feature has ...

Planar-heterojunction perovskite solar cells (PSCs) have experienced rapid evolution in recent years because of the low-temperature processing, suitable alignment, and high mobility tin oxide buried contact layer. However, improper SnO2 surface states poor crystallinity top films are still main obstacles for planar PSCs which performance always lags behind their mesoporous counterparts. Herein,...

A scalable technique of chemical vapor deposition (CVD) growth of ultra-thin graphitic film is proposed. Ultra-thin graphitic films grown by a one-step CVD process on catalytic copper substrate have higher crystallinity than pyrolytic carbon grown on a non-catalytic surface and appear to be more robust than a graphene monolayer. The obtained graphitic material, not thicker than 8 nm, survives d...

Capture of carbon dioxide from fossil fuel power plants via adsorption and sequestration of carbon dioxide in unmineable coal seams are achievable near-term methods of reducing atmospheric emissions of this greenhouse gas. To investigate the influence of surface heterogeneity upon predicted adsorption behavior in activated carbons and coal, isotherms were generated via grand canonical Monte Car...

The U.S. National Institute of Standards and Technology (NIST) provides a number of particulate matter (PM) standard reference materials (SRM) for use in environmental and toxicological methodology and research. We present here the first analysis with respect to the molecular structure of the carbon in three such NIST SRM samples, i.e., diesel engine exhaust soot from heavy duty equipment engin...

Graphitic strips (ribbons) can thought of as segments of carbon nanotubes (CNTs), and therefore may posses many of the useful mechanical and electronic properties of CNTs. We have prepared discrete graphitic strips from o-oligophenylenes, using the intramolecular Scholl oxidation. o-Oligophenylenenes were prepared by Ullmann coupling of a tetra methoxy substituted 2,2’-dibromobiphenyl. The meth...

Abstract Atomically monodispersed heterogeneous catalysts with uniform active sites and high atom utilization efficiency are ideal catalytic materials. Designing such type of catalysts, however, remains a formidable challenge. Herein, using wet-chemical method, we successfully achieved mesoporous graphitic carbon nitride (mpg-C 3 N 4 ) supported dual-atom Pt 2 catalyst, which exhibited excellen...