Although metallic nanostructures have been attracting tremendous research interest in nanoscience and nanotechnologies, it is known that environmental attacks, such as surface oxidation, can easily initiate cracking on the surface of metals, thus deteriorating their overall functional/structural properties1,2...
Flaming combustion is the most common type of combustion. It is the open-flame fire, such as the one seen in a gas burner. Chemically, it is a gas-to-gas reaction, meaning that the fuel has to be in the gaseous state in order to react with the oxidizer, which is already in the ...
of copper, enabling control over nanoscale morphology and the stabilization of Cu+at negative potentials. CO2reduction experiments, in situ X-ray spectroscopy and density functional theory simulations revealed the beneficial interplay between sharp morphologies and Cu+oxidation state. The catalyst exhibits ...
Mn is distributed at the octahedral 8 h site with a 99(1)% occupancy, along with the existence of oxygen vacancy [5(2)%] at O1(8 h) site. The valence state sum of Mn cation was calculated as 3.93+ based on the charging balance. In contrast, in MnO2-D the Mn occupancy...
Review of the state-of-the-art of exhaust particulate filter technology in internal combustion engines 2 Diesel oxidation catalyst and partial diesel particulate filter 2.1 Diesel oxidation catalyst The DOC is a non-filter-based open monolith (flow-through) system resembling the conventional catalytic ...
Pehkonen Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio ABSTRACT The oxidation state of four transition metals (Fe, Mn, Cu, and Cr) in cloudwater has been investigated during sev- eral cloud events at Whiteface Mountain (NY), one cloud event at San...
The introduction of electron-donating dopants into RuO2 would reduce the oxidation state of Ru (Run+, n < 4), thus protecting surface Ru cations from over oxidation to soluble species during OER34,35. However, lowering the Ru oxidation state can impair the catalytic activity for OER, ...
bicomponent excitation and promote the rapid charge transfer and separation to form the electron–hole pairs of BTTD•−and 9-AC•+under light illumination. The motifs in the excited state can quickly complete oxygen reduction to superoxide radical (O2•−) and C(sp3)–H bond activation...
We do not attempt to correlate the activity of the Au-Pd series to their initial peak shape or position because of these complexities and because the metal particles’ chemical state would change during the reaction; therefore, limited information that would be relevant to understanding the ...
Poyatos JM, Muñio MM, Almecija MC, Torres JC, Hontoria E, Osorio F (2009) Advanced oxidation processes for wastewater treatment: state of the art. Water Air Soil Pollut 205:187–204 Article Google Scholar Premarathna K, Rajapaksha AU, Sarkar B, Kwon EE, Bhatnagar A, Ok YS, Vithanag...