Rational design of CNTs@FeCo2O4 as anode materials for lithium-ion batteries

Hydroquinone colorimetric sensing based on core–shell structured CoFe2O4@N-GQDs@CeO2 nanocomposites as oxidase mimics

“…3b. The fitted peaks at binding energies of 781.1 eV and 796.0 eV are attributed to Co 2+ , 42 and the fitted peak at 779.8 eV is associated with Co 3+ , 43 where a satellite peak exists at 785.9 eV. These results indicate the presence of both Co 2+ and Co 3+ in CoFe 2 O 4 @N-GQDs@CeO 2 .…”

“…3f), peaks at 398.84 eV and 405.6 eV were attributed to pyrrole-N and N-O, respectively. 42 The highresolution C 1s spectra (Fig. 3g) showed three fitted peaks at 284.3 eV, 285.5 eV, and 289.1 eV corresponding to C-C/CQC, C-O/CQN, and CQO bonds, respectively.…”