The synthesis of NiO nanoparticles was done by sol-gel method. Nickel Acetate Tetrahydrate ((CH3COO)2 –Ni·4H2O) was dissolved in ethanol with constant stirring to obtain a clear and light greenish sol. Oxalic acid solution was used to obtain a thick green gel, then dried in an oven to get dried gel and was then grinded into fine powders and calcined for different time periods to obtain nanocrys...

Three-dimensionally (3D) nanoarchitectured palladium/nickel (Pd/Ni) catalysts, which were prepared by atomic layer deposition (ALD) on high-aspect-ratio nanoporous alumina templates are investigated with regard to the electrooxidation of formic acid in an acidic medium (0.5 M H2SO4). Both deposition processes, Ni and Pd, with various mass content ratios have been continuously monitored by using...

The bacterial-induced hollow cylinder NiO (HCNiO) nanomaterial was utilized for the enzymeless (without GOx) detection of glucose in basic conditions. The determination of glucose in 0.05 M NaOH solution with high sensitivity was performed using cyclic voltammetry (CV) and amperometry (i-t). The fundamental electrochemical parameters were analyzed and the obtained values of diffusion coefficien...

novel ceramic oxides have been increasingly focused in recent years because of their potentialapplications in environmental purification especially to treat organic contaminants present in water. in thisresearch work, a set of nio-co3o4 nano-ceramic composite materials were prepared by a simple refluxcondensation method using nickel acetate / cobalt acetate as precursor salts, sodium monododecy...

Biochar derived from waste biomass has proven as a promising sorbent for removal of heavy metals from wastewater. However, proper disposal of such a heavy metal-containing biochar is challengeable. The major objective of this study is to create a reuse way by converting the heavy metal-loaded biochar into supercapacitor. Two biochars were produced from dairy manure and sewage sludge, respective...

The stability of vertical geometry NiO/Ga2O3 rectifiers during two types annealing were examined, namely (1) the NiO only, prior to deposition Ni/Au metal anode stack, and (2) completed device. devices annealed in oxygen for 1 min at a temperature up 500 °C. results show that 300 °C can lead best performance both terms maximizing breakdown voltage on–off ratio, lowering forward turn-on voltage,...

This study is the first attempt to large-scale energy-efficient production of nanomagnetic Ni/NiO composites by using autocombustion based on leaves or extract corchorus olitorius. The as synthesized product can be characterized XRD, SEM, TEM and EDX techniques. results confirm that materials consisted entirely well crystalline Ni NiO phases. crystallinity both enhanced increasing amount Howeve...

To clarify the Ni species of NiO/SiO2-Al2O3 catalysts that are active for ethylene oligomerization, 18 types were prepared using three Ni-loading methods (i.e., ion-exchange, impregnation, and homogeneous precipitation), with different Ni-loadings (1–20 wt%), examined respect to their structure catalytic activity oligomerization. Characterized by N2 adsorption, powder XRD, FE-SEM, H2-TPR, NH3-T...