Co3O4@carbon with high Co2+/Co3+ ratios derived from ZIF-67 supported on N-doped carbon nanospheres as stable bifunctional oxygen catalysts

Catalytic Hydrogenation of Biomass‐Derived Furoic Acid to Tetrahydrofuroic Acid Derivatives over Pd/CoOx Catalyst in Water

“…Further, deconvolution of these peaks evident the presence of two separate peaks located at 781.0 and 796.6 eV for Co 3+ (51.2 %), and 782.6 and 798.0 eV for Co 2+ (48.8 %). The observed Co 2+ /Co 3+ of 0.95 is in accordance with the literature reports, where the Co 2+ /Co 3+ ratio may vary from 0.53–1.58 [47–51] . Though the observed two satellite peaks at 787.3 eV and 803.8 eV are the characteristics of Co 3 O 4 , due to its non‐crystalline/amorphous form it is more appropriately expressed as CoO x .…”

“…ChemCatChem ratio may vary from 0.53-1.58. [47][48][49][50][51] Though the observed two satellite peaks at 787.3 eV and 803.8 eV are the characteristics of Co 3 O 4 , due to its non-crystalline/amorphous form it is more appropriately expressed as CoO x . The observed Co 2 + /Co 3 + ratio inferred the availability of surface oxygen vacancies, which presumably facilitate a favorable interaction of the carboxylate group of 2-furoic acid with the CoO x support.…”

Cerium-induced lattice disordering in Co-based nanocatalysts promoting the hydrazine electro-oxidation behavior

“…21,22 Besides, nitrogen-doped carbon (N–C) derived from the zeolitic imidazolate framework (ZIF) is a highly conductive and porous support, which could not only guarantee facile charge transfer but also realize anchored nanocatalysts with high exposure. 23,24 In this work, we proposed an N–C-supported Co-based catalyst with disordered oxide nanolayers induced by cerium incorporation, which synergistically achieves enriched active sites and enhanced intrinsic activity for promoted HzOR catalysis.…”

Nitrogen-doped carbon encapsulating a RuCo heterostructure for enhanced electrocatalytic overall water splitting

“…Therefore, the structural features of RuCo@C-350 will benefit the exposure of active sites, electrolyte penetration, accelerated mass and electron transport, and gas release. [37][38][39] The XRD patterns (Fig. S2 †) show that the obtained RuCo@C catalysts exhibit broad diffraction peaks corresponding to Ru (JCPDS no.…”