From a fundamental point of view, hydrogen has a unique chemistry, in view of its small mass, the presence of a single 1 s valence orbital, the absence of core and non-bonding electrons, and an anomalously high electronegativity [4]. These factors contribute to the versatility of the M...
Corrosion inhibitors are extensively used to protect metal surfaces1,2; however, traditional inhibitors, particularly chromates, must be replaced by compounds of lower toxicity3, and thus there is great interest in organic inhibitors4,5,6. These are usually constituted by elements with lone pair el...
Chromium (VI) concentrations in control and chromium nanoparticle (Cr0) exposed primary macrophages and culture supernatants were determined following the incubation with a solution containing 0.5 ml 3 M H2SO4, 0.5 ml 50% 1.5-Diphenylcarbazide in 9.0 ml deionized water. The absorbance was measured...
Corrosion inhibitors are extensively used to protect metal surfaces1,2; however, traditional inhibitors, particularly chromates, must be replaced by compounds of lower toxicity3, and thus there is great interest in organic inhibitors4,5,6. These are usually constituted by elements with lone pair el...
The molecular wavefunction ΨCASSCF is constructed as a linear combination ΨCASSCF=∑i=1KaiΞi of all CSFs Ξi each of which is formed by distributing all active electrons over all active spin-orbits in all possible ways, and have the same spin and symmetry eigenvalues as those of the inv...
A study of the equilibrium adsorption capacity was conducted utilizing the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich adsorption isotherms. The data exhibited a clear conformity to the Langmuir isotherm, as evidenced by the results. For RBB removal, H2SO4-modified pumice demonstrated a ...
vibrational overtone-induced processes in HNO3 and H2SO4. Another focal topic is thermally, as well as overtone-induced processes of NO x , HNO x and other atmospherically relevant species in water clusters, the latter serving as models for water surfaces, aerosols and other water environments. ...
Although the detailed mechanisms that control hemicellulose removal during hydrothermal pretreatment are not well understood, the mass transfer effect controlled by the flow-rate, lignin-hemicellulose-oligomers and their solubility are believed to be significant. It was observed that the distribution of ...
(II) to the oxygen 2p orbital in O2to form an *OOH intermediate on the Co site37,44. It is worth noting that the Co valence state increases from 0.9 V to 0.7 V and reaches the plateau at 0.4 V, owing to the mass-transfer controlled diffusion of O2at 0.4 V that ...
The mixture, which was oxidized in the previous process, was transferred to a 1 L beaker to start the exfoliation process. This process was continued by washing the material with a solution of 3% H2SO4 and 0.5% H2O2 (15.8 mL H2SO4, 7.8 mL H2O2 and 476.4 mL distilled water) with ...