(by head-to-head overlapping) forms covalent bonds (σ-bonds) with the adjacent carbon atoms [42], whereas the remaining unhybridized orbital (by sidewise overlapping) forms a π-bond with the nearby carbon atom, developing an electron cloud above and below the sp2-hybridized carbon platform....
In the interest of finding effective and stable materials for optical limiting, we had tried to combine the multi-walled carbon nanotubes (CNTs) and ionic liquids surfactant (hydroxypropyl sulfo imidazoline) to obtain a new dispersion. Ultimately, we achieved non-covalent modification to carbon ...
Earth’s deep carbon cycle affects atmospheric CO2, climate, and habitability. Owing to the extreme solubility of CaCO3, aqueous fluids released from the subducting slab could extract all carbon from the slab. However, recycling efficiency is estimated at only around 40%. Data from carbonate inclu...
H-PHI shows values comparable to mpg-CN δ, obtained for the same mass of the material, which illustrates a transition from an ionic structure in Na-PHI to covalent as in mpg-CN upon substitution of Na+ with protons. Coupling of two benzylamine molecules is accompanied by the formation of...
The rich pore structure of activated carbon materials provides a natural advantage for the physical adsorption of both organic and inorganic sulfur gases. Surface area, pore size and porosity are key features that determine the physical adsorption performance of carbon materials as they control the sul...
The electrode is fabricated through combining S,N-codoped mesoporous carbon nanostructures of Co/Co-Cu-S/carbon nanoplates and carbon nanofibers (denoted as Co/Co-Cu-S@SNPCP-CFs). In this design, CdS nanoparticles (NPs) as pore formers and sulfur sources endow the resultant electrocatalysts ...
OrganicChemistry:OrganicChemistry:StudyofcarbonbasedmoleculesStudyofcarbonbasedmoleculesBondingBondingCovalent(sharevalenceeCovalent(sharevalencee--))AllNonmetalsAllNonmetalsMadeofMadeofcarbon,carbon,hydrogenhydrogenandotherandothernonmetalslikesulfur,oxygen,nitrogenetcnonmetalslikesulfur,oxygen,nitrogenetc..CarbonBased...
Heteroatom-doped porous carbon membranes (HPCMMs) are a unique group of carbon materials carrying an interconnected porous network in a membrane state, in which some of carbon atoms are selectively replaced by heteroatom such as nitrogen (N), sulfur (S), phosphorus (P), boron (B), and selen...
High performance rechargeable Li-S batteries using binder-free large sulfur-loaded three-dimensional carbon nanotubes Mumukshu D. Patel, Eunho Cha, Chiwon Kang, Bharat Gwalani, Wonbong Choi Pages 120-126 select article Molecular simulation and experiments of water adsorption in a high surface area...
It is known that the carbon atoms become more positive as the neighboring doped nitrogen and sulfur atoms are more electronegative27,29. This change of the charge state of the carbon atoms causes the nearby oxygen functional groups to be polarized and activated to anchor sulfur by covalent ...