X-ray photoelectron spectroscopic and morphologic studies of Ru nanoparticles deposited onto highly oriented pyrolytic graphite

Absorption of calcium ions on oxidized graphene sheets and study its dynamic behavior by kinetic and isothermal models

“…A band at 1760 cm -1 was assigned to be the C-O stretching vibrations of the COOH groups and the band at 1600 cm -1 would be considered to be the vibration of C (Aleksandrzak et al 2015). A weak peak located at 1350 cm -1 was assigned to be the OH bending of the C-OH groups (Bavand et al 2015). A strong band at 1100 cm -1 might be attributed to C-O stretching vibration (Chang et al 2015;Singh et al 2015).…”

A Metalloprotein Inspired Ruthenium Complex as an Efficient and Reusable Catalyst for Selective Oxidation of Alcohols to their Corresponding Carbonyl Compounds

“…The characteristic peak has been deconvoluted into five components for best fitting parameter of R 2 value 0.999 using Gaussian multipeak fitting technique. The characteristic peak for Ru 3d 5/2 and 3d 3/2 was observed at 282.2 eV and 283.9 eV respectively indicating the presence of Ru . Since the C1 s reference peak also lies at 285 eV it overlaps with the Ru peak and somehow it reflects a little bit shifts in the deconvoluted data.…”

“…Since the C1 s reference peak also lies at 285 eV it overlaps with the Ru peak and somehow it reflects a little bit shifts in the deconvoluted data. The appearance of 3d 5/2 peak at 282.2 eV is indicating Ru−N species in +3 oxidation state . The 286.5 eV peak attributed to the Ru−C species adjacent to carboxyl and 287.6 eV corresponds to the electron deficient carbon atom within the carboxyl …”

Highly Selective, Iron‐Driven CO2 Methanation

“…461.2 eV, while RuO 2 has characteristic peaks at 462.6 eV and 464.0 eV ,. No ruthenium species has been identified with a characteristic peak at 463.1 eV, so this peak shift has been tentatively assigned as either a shift from RuO 2 after activation to Ru(0) after reaction, or merely a shift in the RuO 2 peak with no change in oxidation state . In fresh Ru,Fe@NCNT the peak is observed at 459.2 eV in the Ru,Fe@NCNT‐0.05/0.95 sample, and at 461.8 eV in the Ru,Fe@NCNT‐0.2/1.0 sample.…”

“…In fresh Ru,Fe@NCNT the peak is observed at 459.2 eV in the Ru,Fe@NCNT‐0.05/0.95 sample, and at 461.8 eV in the Ru,Fe@NCNT‐0.2/1.0 sample. These peaks are both attributed to either Ru(0) or Ru carbide, as the CVD‐doped ruthenium is likely incorporated directly into the NCNT support structure, similar to the Fe nanoparticles. In the absence of characteristic peak positions, these assignments are justified by the oxygen‐free CVD synthesis environment, in which the formation of Ru oxides in the fresh samples is significantly less likely than the formation of Ru(0) or Ru carbides as the particles are formed and similarly covered with a graphitic carbon layer.…”