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 ...

A novel three-dimensional (3D) metal/metal oxide core/branch array electrode has been fabricated as a supercapacitor electrode. Hollow Ni nanocorn arrays are constructed on Ni foams and act as a highly conductive and stable support to Co3O4 nanoflakes. Enhanced pseudocapacitive performance compared to bare Co3O4 nanosheets is demonstrated with high rate capability and excellent cycling stability.

Highly sensitive, stable, low production costs, together with easy maintenance and portability, sensors are ever most demanded nowadays for monitoring quantification of hazardous chemicals/gases in the environment. The utilization one dimensional (1D) metal oxide nano structured chemical/gas environmental is vastly investigated because their superior surface to volume ratio, stability, provide ...

We report directly grown strongly adherent graphene on Co3O4(111) by carbon molecular beam epitaxy (C MBE) at 850 K and density functional theory (DFT) findings that the first graphene layer is reconstructed to fit the Co3O4 surface, while subsequent layers retain normal graphene structure. This adherence to the Co3O4 structure results from partial bonding of half the carbons to top oxygens of ...

in this paper, the mer-co(nh3)3(no2)3 complex was used as a new precursor for synthesizing spinel-type cobalt oxide nanoparticles (co3o4nps).thermal decomposition of the complex at low temperature (175 °c) resulted in the co3o4nps without using expensive and toxic solvents or complicated equipment. xrd, ft-ir, sem, edx, and tem were employed to characterize the product, and its optical and magn...

The preferential oxidation of CO (CO-PrOx) to CO2 is an effective catalytic process for purifying the H2 utilized in proton-exchange membrane fuel cells power generation. Our current work reports on synthesis, characterization and CO-PrOx performance evaluation unsubstituted magnesium-substituted iron- cobalt-based oxide catalysts (i.e., Fe3O4, Co3O4, MgFe2O4 MgCo2O4). More specifically, abilit...

The effect of the Co-Cu oxide catalysts composition on their physicochemical properties and performance in deep oxidation ethanol was studied. with Co:Cu molar ratios 4:1, 1:1, 1:4 were obtained by calcination (4 h at 500 °C air) coprecipitated precursors characterized detail using powder XRD, Raman spectroscopy, N2 physisorption, H2-TPR, XPS. XRD spectroscopy indicated formation Co3O4 CuO mixt...

Abstract. Differential thermal analysis (DTA) was used to examine the effect of particle size and morphology cobalt (III/IV) oxide (Co3O4) on its response under exposure methane (1 vol % in dry synthetic air), which is a relevant gas for detection combustible gases. The DTA results from catalytic oxidation methane, characteristics should correlate with pellistor response. Co3O4 samples differin...