In this study, an effect of different concentrations of urea on the morphology of cobalt oxide (Co3O4) nanostructures was investigated. The Co3O4 nanostructures are fabricated on gold coated glass substrate by the hydrothermal method. The morphological and structural characterization was performed by scanning electron microscopy, and X-ray diffraction techniques. The Co3O4 nanostructures exhibi...

In the present work, two sets of Co/ZSM-5 mesoporous catalysts with different acidity and Co loadings varying from 1 to 5 10 wt% were prepared using ZSM-5-A (Si/Al = 50) ZSM-5-B 150) as support. X-ray diffraction (XRD) analysis showed that Co3O4 phase was formed in surface reducibility nanoparticles on greater comparison solid. situ FTIR pyridine adsorption characterization confirmed all contai...

Metal oxide nanosheets have potential applications in novel nanoelectronics as nanocrystal building blocks. In this work, the devices with a structure of Au/p-type Co3O4 nanosheets/indium tin oxide/glass having bipolar resistive switching characteristics were successfully fabricated. The experimental results demonstrate that the device have stable high/low resistance ratio that is greater than ...

Ni-doped Co3O4 catalysts with various Ni concentrations (0.01, and 0.015 M) were synthesized using a simple, cost-effective hydrothermal route. The samples are denoted as Co3O4-1 Co3O4-2. Structural morphological properties of as-prepared characterized by XRD, FTIR, XPS, SEM, HR-TEM techniques. electrochemical characteristics for the urea oxidation (UOR) on catalyst examined cyclic voltammetry ...

The highly ordered mesoporous Co3O4-Al2O3 bimetal oxide, prepared by a nano-casting method, was modified with Sn promoter (denoted as Sn/m-CoAlOx) to enhance selectivity liquid-hydrocarbons well suppress CO2 formation formed water gas-shift (WGS) reaction activity during CO hydrogenation hydrocarbons (Fischer–Tropsch Synthesis (FTS) reaction). Based on the surface properties of Sn/m-CoAlOx in r...

The practical application of lithium–sulfur batteries (LSBs) is severely hindered by the undesirable shuttling lithium polysulfides (LiPSs) and sluggish redox kinetics sulfur species. Herein, a series ultrathin single-atomic tungsten-doped Co3O4 (Wx-Co3O4) nanosheets as catalytic additives in cathode for LSBs are rationally designed synthesized. Benefiting from enhanced activity optimized elect...

The Co3O4 hollow dodecahedron (Co3O4@CN) was prepared by calcining ZIF-67 in N2 and then air atmosphere. In the Co3O4@CN compound material, nanoparticles (Co3O4 NPs) are anchored carbon skeleton, solving aggregation problem of NPs. Because retains porous structure ZIF-67, presence Co2+ Co3+ favors electron transfer between enzyme substrates, it has excellent peroxidase-like (POD-like) activity....

A general corrosion strategy was employed for the straightforward fabrication of a variety of metal oxide nanostructures, such as Fe3O4 octahedra, Co3O4 nanoplates, nanoporous TiO2, and Mn3O4 octahedra.