Carbon, nitrogen, and oxygen are essential components in solid-state materials. However, under standing their preference on the bonding to metals has not been straightforward. Here, niobium carbide, nitride, and oxide with simple rock-salt-based structures were analyzed by first principles ...
Clathrate hydrates are compounds that can trap molecules within their polyhedral cages; these cages are constructed by water molecules linked through hydrogen bonding. Type I, type II, and H16 are commonly formed into two cubic forms. The crystallographic properties of each structure are different, ...
Nitrogen-coordinated single atom iron sites (FeN4) embedded in carbon (Fe–N–C) are the most active platinum group metal-free oxygen reduction catalysts for proton-exchange membrane fuel cells. However, current Fe–N–C catalysts lack sufficient long-term durability and are not yet viable for...
Organic compounds typically consist of groups of carbon atoms covalently bonded to hydrogen, usually oxygen, and often other elements as well. Created by living things, they are found throughout the world, in soils and seas, commercial products, and every cell of the human body. The four ...
Also, the adsorption mechanism is depended on the action due to π–π stacking interaction and hydrogen bonding. The smaller size of IBP molecules in comparison with the pore size of carbon aerogel also contribute to the pre-filling mechanism of sorption (Abolhasani et al., 2019). Carbon ...
Considering the perspective of economic and environmental sustainability, biochar is deemed as the most promising carbonaceous material for environmental applications. Biochar is a carbon-rich byproduct produced from a range of renewable biomass wastes under oxygen-limited conditions (Lehmann 2007). As a...
Additional analyses of the O K-edge using model samples containing carbamate, carbonate, and bicarbonate functional groups as reference demonstrate a carbamate bonding mechanism for the chemical adsorption of CO2 by the HAS material under the conditions employed. These findings show the capability of ...
However, the carbon materials discussed here are mainly built up by sp2 bonding (Tran et al. 1995). Repeating sp2 bonding forms a large network of 6-ring structures leading to a two-dimensional graphene sheet. The stacking order of these graphene sheets is important; van der Waals forces ...
Figure Schematic illustration of solid carbon nanosphere, hollow carbon nanosphere and OHPC-25. For the first time, a novel dissolution–reassembly route based on strong hydrogen-bonding interaction was developed to prepare unique orchid-like hierarchical porous carbon, in which phloroglucinol acted as ...
This reactivity is governed by large ionic radii, high coordination numbers, kinetic lability, the involvement of f orbitals in bonding, and single-electron redox processes or σ-bond metathesis, which are distinct from the oxidative addition and reductive elimination pathways commonly seen for ...