X-ray photoelectron spectroscopy studies of some cobalt(II) nitrate complexes

Synthesis, Characterization and Crystal Structure of a New Cobalt Phosphomolybdate that Contains [(Mo16O32)Co16(H2O)18(PO4)6(HPO4)18] Wheels

“…spectrum of compound (1) molecules (see Supplementary Figure S1). The XPS measurement of compound (1) in the Mo3d3/2, Mo3d5/2 and P2p energy region gives one peak at 231.25 ev, attributed to Mo 5+ , and one peak at 133.6 ev attributed to P 5+ [14,15], in accordance with the valence bond calculations ( Figure 6). …”

Characterization of Co-doped birnessites and application for removal of lead and arsenite

“…However, when the initial Co/Mn molar ratio was high, the BE of the two split peaks shifted to the low BE side, and shake-up satellite peaks appeared on the high BE sides of each. This result means that CoB20 may contain a small amount of Co(II) [27,28]. Additionally, the Co (2p 1/2 )-Co (2p 3/2 ) splittings of CoB20 are 15.4 eV between the values of Co(III) (15 ± 0.1 eV) and Co(II) (15.9 ± 0.1 eV) [26].…”

Epoxidation of styrene using carbon nanotubes-supported cobalt catalysts

“…The curve-fitting of the Co 2p photoelectron peaks was performed and characterized by two components due to spin−orbital splitting Co 2p 3/2 and Co 2p 1/2 , along with two shakeup satellites ( Figure 4B). The Co 2p 3/2 and Co 2p 1/2 peaks of Co species, located at the binding energies of 781.5 and 797.8 eV, respectively, are the characteristic of surface Co 2+ species from Co(NO 3 ) 2 [49]. Because the Co/CNTs catalysts used in this study were prepared by desiccation at 60 o C without high-temperature calcination, there should be no cobalt oxide (CoO or Co 3 O 4 ) that can be specifically identified by XPS [50][51][52].…”