Ultra-small Fe3O4 nanoparticles encapsulated in hollow porous carbon nanocapsules for high performance supercapacitors

In situ synthesis of nanostructured Fe3O4@TiO2 composite grown on activated carbon cloth as a binder-free electrode for high performance supercapacitors

“…The characteristic peaks of Fe2p at 710.8 and 724.4 eV correspond to the spin–orbit peaks of Fe2p 3/2 and Fe2p 1/2 , which is in good agreement with previous reports. 36,37 Two satellite signals of Fe2p 3/2 and Fe2p 1/2 peaks were observed at the same time, which can be attributed to the oxidation states of Fe 3+ and Fe 2+ in Fe 3 O 4 nanoparticles. 38,39 Two strong peaks of rutile type crystals are shown in the Ti2p spectra ( Fig.…”

A sequential process to synthesize Fe3O4@MnO2 hollow nanospheres for high performance supercapacitors

“…5(c) shows the detailed Fe 2p spectrum, and the peaks located at around 711 eV and 724.8 eV are assigned to Fe 2p 3/2 and Fe 2p 1/2 , respectively. 36 As shown in Fig. 5(d), the high-resolution Mn 2p spectrum shows binding energies at 642.3 eV and 653.9 eV, which are attributed to Mn 2p 3/2 and Mn 2p 1/2 , respectively.…”

Superparamagnetic MoS2@Fe3O4 nanoflowers for rapid resonance-Raman scattering biodetection

“…As shown in Fig. 3 a, the Fe 2p spectrum via peak fitting had Fe(II)-O (710.2 eV, 724.4 eV) and Fe(III)-O (712.4 eV, 725.6 eV) peaks [ 24 , 25 ]. In the composite with MoS 2 , the Fe 2p spectra (Fig.…”