A catalytic nanostructured cobalt oxide electrode enables positive potential operation for the cathodic electrogenerated chemiluminescence of Ru(bpy)32+ with dramatically enhanced intensity

Abstract

We report the first novel cathodic electrochemiluminescence of Ru(bpy)(3)(2+) at positive potential of +0.6 V (vs. Ag/AgCl) with a strong light emission clearly visible to the naked eye triggered by reactive oxygen species O(2)(-) on an in situ electrodeposited Co(3)O(4) nanostructured electrode.

Environment friendly hydrothermal synthesis of carbon–Co3O4 nanorods composite as an efficient catalyst for oxygen evolution reaction

“…3 d) is broad. The major peak at the binding energy of 530 eV concurs with the oxygen species in the Co 3 O 4 phase [39] . The peak at 531.13 eV corresponds to organic C-O bond.…”

Splitting Water with Cobalt

“…There have been many reports in the literature concerning the use of cobalt oxide/hydroxide materials as electrode coatings that catalyze water oxidation. Various methods of preparation from soluble Co II salts (anodic deposition in alkaline [161,[182][183][184][185] or acidic to neutral [186,187] solution, cathodic deposition from CoCl 2 , [188][189][190][191][192][193][194][195][196] possibly in the presence of acetate anions, [197,198] passivation of a cobalt electrode, [199] chemical vapour deposition, [200] or reactive sputtering in O 2 plasma [201] ) have been described and these result in distinct stoichiometries. The activity of cubic Co 3 O 4 nanoparticles has also been reported.…”

Heterogeneous Cobalt‐Catalyzed Direct N‐Formylation of Isoquinolines with CO2 and H2

“…In Figure 1b,t he peaks at 779.2 and 794.6 eV can be assigned to the Co 0 2p 3/2 and Co 0 2p 1/2 configurations, respectively. [14] The resultsi ndicated that, after reduction with hydrogen at 400 8C, the Co 0 species was formed. The Co II/III speciesw ere ar esult of oxidation during the catalystp reparation and characterization.…”

“…The two peaks at 786.5 and 803.3 eV are Co 2+ shake‐up satellite peaks of Co 3 O 4 (Figure d). In Figure b, the peaks at 779.2 and 794.6 eV can be assigned to the Co 0 2p 3/2 and Co 0 2p 1/2 configurations, respectively . The results indicated that, after reduction with hydrogen at 400 °C, the Co 0 species was formed.…”