Simplified synthesis of single-crystalline magnetic CoFe2O4 nanorods by a surfactant-assisted hydrothermal process

An Efficient Bi-functional Electrocatalyst Based on Strongly Coupled CoFe 2 O 4 /Carbon Nanotubes Hybrid for Oxygen Reduction and Oxygen Evolution

“…The Fe 2p spectrum of CoFe 2 O 4 consists of two peaks: Fe 2p3/2 at 711.3 eV and Fe 2p1/2 at 724.7 eV (Fig. 3c), indicating the valence state of Fe 3+ [41][42][43] Nitrogen sorption measurements were carried out to investigate the pore structure and size distribution of CoFe 2 O 4 /CNTs hybrid. The N 2 sorption isotherm of the CoFe 2 O 4 /CNTs demonstrates a typical type IV isotherm with H2 hysteresis loop in the P/ P 0 range of 0.6-1.0 (Fig.…”

Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

“…Conventionally, CoFe 2 O 4 nanopowder is fabricated by sol-gel method [6][7][8], co-precipitation method [9][10][11] and hydrothermal method [12,13]. However, the difficulty on the control of solution pH value during the chemical dynamic process, and the requirement of strict and sophisticated drying conditions as well as expensive alkoxide precursors, respectively, makes the coprecipitation and sol-gel methods not so effective for obtaining highly qualified CoFe 2 O 4 nanopowder.…”

FeCo2O4/hollow graphene spheres hybrid with enhanced electrocatalytic activities for oxygen reduction and oxygen evolution reaction

“…3c) shows two peaks centered at 710.86 and 724.11 eV, corresponding to Fe 2p 3/2 and Fe 2p 1/2 , respectively, suggesting the existence of Fe 3+ cation [34][35][36]. A shift of 0.98 and 1.31 eV toward a low binding energy also exists in the peak of Fe 2p 3/2 and Fe 2p 1/ 2 , respectively, for FCO/HrGOS, as compared to free FCO (Fig.…”

“…3b) be further fitted to two peaks, respectively. The two fitted peaks at 780.76 and 796.86 eV are ascribed to Co 2+ , another two fitted two peaks at 779.52 and 794.71 eV are ascribed to Co 3+ [23,[32][33][34][35][36], and the Co 2+ :Co 3+ atomic ratio is calculated to be very close to 1:1. As compared to free FCO, a shift of 1.65 and 1.77 eV toward a low binding energy exists in the peak of Co 2p 3/2 and Co 2p 1/2 , respectively, for FCO/HrGOS hybrid.…”