In this study, Co3O4@ZnO core-shell nanoparticles (CZCS NPs) have been synthesized using three different core to shell materials ratios of Co3O4 to ZnO (0.5 : 0.25 CZCS (1), 0.5 : 0.5 CZCS (2),...

Jan 1, 2021 · The Co 3 O 4 nanoparticles was further rectified for its structural purity by XRD and also analyzed by Scanning Electron Microscope (SEM) for their morphology.

May 24, 2021 · Here, we show that nanocrystalline CeO 2 in a Co 3 O 4 /CeO 2 nanocomposite can modify the redox properties of Co 3 O 4 and enhances its intrinsic oxygen evolution reaction activity, and...

Apr 1, 2014 · The as-prepared samples were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The optical absorption spectrum indicates that the direct band gaps of Co 3 …

In this study, we report a Co 3 O 4 nanoparticle (NP) catalyst synthesized by a hydrothermal method. Furthermore, Ru was successfully incorporated into the Co 3 O 4 NPs (Ru x Co 3–x O 4 NPs) for further improvement of catalytic performance in chlorine generation.

The as-prepared Co3O4 NPs exhibited the face-centered cubic structure of Co3O4 with the crystallite sizes ranging from 20 to 30 nm with an energy band gap of 3.86 eV.

Nov 1, 2024 · The SEM and TEM analysis provided the strong evidence for heterojunction formation because of the well distribution of Co 3 O 4 onto PCN (Fig. 11 (f and g). And the improved photoactivity was due to the presence of N defects which endowed the photocatalyst with numerous active sites.

Co3O4 octahedral particles, with lengths of ~70 nm and widths of ~60 nm, were hydrothermally synthesized under the assistance of triphenylphosphine (PPh3). X-ray powder diffraction (XRD) showed that the Co3O4 octahedra belong to the cubic crystal system. Scanning electron microscopy (SEM) and high-resolution

Sep 26, 2023 · Among metal oxide nanoparticles, Co 3 O 4 NPs have attracted a lot of attention because of their low price and great electroactivity. However, being a transition metal, cobalt may exist in a variety of oxidation states (including Co 2+, Co 3+, and Co 4+).

Dec 18, 2013 · Ultrathin Co 3 O 4 nanosheet arrays, which are composed of well aligned uniform long-range (~5 μm in length) and thin (~10 nm in thickness) nanosheets, with reasonable mass loading on Ni...