Co3O4 nanoparticles
Catalytic properties of Co3O4 nanoparticles for rechargeable Li/air batteries
... nanoparticles were almost separated to become the nanorod type. When they discharged to 2.3 V, it was observed that the surface of the electrode was homoge- nously covered with precipitates, which appeared to be ...
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Structural and Optical Properties of Co3O4 Nanoparticles Prepared by Sol-gel Technique for Photocatalytic Application
... and is presented in Figure 8. The optical properties of the synthesized materials deliver the impurity levels, energy band structure, localized defects, excitons, lattice vibrations and certain magnetic excitations [17]. ...
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A Review on Bio-Synthesized Co3O4 Nanoparticles Using Plant Extracts and their Diverse Applications
... Generally, two main approaches are used for the synthesis of nanoparticle: top down and bottom up approach. The top down approach deals with material size reduction of particles via the physical and chemical process to ...
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Effects of TiO2 and Co3O4 Nanoparticles on Cell Cycle of a Pulmonary Cell Line (A549)
... We also evaluated the expression of three miRNAs involved in the regulation of the cell cycle (Figure 3). The expression of all miRNA varied over time in response to the presence of NPs. MiRNAs 34a and 126 were induced ...
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Microplasma assisted electrochemical synthesis of Co3O4 nanoparticles in absolute ethanol for energy applications
... NIR region is weak and can only be observed when the size of the crystals is larger than 60 nm. The absorbance measured for our solutions shows a peak at 675 nm for the sample synthesized at 4.6 mA, which is blue-shifted ...
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Comparative Surface Electrochemistry of Co and Co3O4 Nanoparticles: Nitrite as an Analytical Probe
... metal nanoparticles such as cobalt [24-28], it is surprising that most work focus more on electrocatalysis of theses metal nanoparticles other than their electron transport behaviour that form the basis for ...
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High Performance Asymmetric Supercapacitor based on spinel Co3O4 nanoparticles
... synthesized nanoparticles, black pearl carbon, and polyvinylidene difluoride (PVdF) in N-methyl pyrrolidine (NMP) as binder at the ratio of 90:5:5 wt% to form ...
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Fabrication and Investigation of the Magnetic Properties of Co and Co3O4 Nanoparticles
... The process involves conversion of monomers into a colloidal solution (sol) that acts as the precursor for an integrated network (or gel) of either discrete particles or network polymers.In this method, metal ...
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Synthesis, Characterization and Optical Properties of Co3O4 Nanoparticles
... 3) indicates the purity of the product. The diagram of the Co3O4 in 10º ≦ 2θ ≦ 80°, presents all the lines of magnetite (JCPDS No. 42-1467) and their intensities match the theoretical values [33, 34]. No distinct ...
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Synthesis By Sol Gel Method And Characterization Of Co3O4 Nanoparticles.
... XRD, SEM, EDAX . Particle structure was confirmed by x-ray diffraction analysis; size was determined by Scherrer formula. SEM analysis showed that prepared nanoparticles were in Nano regime, somewhat round shaped ...
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Environmental Friendly and Facile Synthesis of Co3O4 Nanowires and Their Promising Application with Graphene in Lithium Ion Batteries
... Abbreviations Co3O4: Cobalt oxides; Co3O4NPs: Co3O4 nanoparticles; Co3O4NWs: Co3O4 nanowires; CV: Cyclic voltammograms; DEC: Diethyl carbonate; dfGNS: Defect-free graphene nanosheets; EC[r] ...
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Synthesis of Porous CoO Nanorods @ N-doped Carbon as High- Performance Lithium Ion Battery Anode
... In present study, the CoO nanorods @ N-doped carbon has been prepared using porous Co3O4 nanorods as template, and the polypyrrole formed on the surface of Co3O4 nanorods are used as red[r] ...
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Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p Co3O4/n ZnO Heterostructures
... (a) Co3O4, (b) Co3O4/ZnO-5, (c) Co3O4/ZnO-15, (d) Co3O4/ZnO-25, (e) Co3O4/ZnO-35, (f) Co3O4/ZnO-45, and (g) ...ZnO, Co3O4, and Co3O4/ZnO heterostructures, and (b) ...
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A Novel Tyrosinase Biosensor based on Graphene and Co3O4 Nanocomposite Materials for Rapid Determining Catechol
... Graphene is a monolayer of sp 2 hybridized carbon atoms, which packed into a dense honeycomb crystal structure [13]. Ye group had developed electrochemical glucose oxidase biosensor based on reduced graphene oxide, ...
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Synthesis and Electrochemical Measurement of Three Dimensional Carbon Nanofibers/Co3O4-Polyaniline Composites as Supercapacitor electrode materials in Neutral Electrolyte
... Figure 3. (a) CV curves at 100mv/s; (b) charge-discharge curves at 1A/g; (c) the summary plots of specific capacitances versus different current densities; (d) the summary plots of specific capacitances versus different ...
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Effect of Substitution Degree and the Calcination Temperature on the N2O Decomposition over Zinc Cobaltite Catalysts
... [28] presented a detailed study on N2O decomposition over different oxide supported Co3O4 spinel catalysts prepared via the co-precipitation method and found that Co3O4/MgO with cobalt l[r] ...
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Synthesis of Porous CoO Nanorods @ N-doped Carbon as High- Performance Lithium Ion Battery Anode
... In present study, the CoO nanorods @ N-doped carbon has been prepared using porous Co3O4 nanorods as template, and the polypyrrole formed on the surface of Co3O4 nanorods are used as red[r] ...
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Shape-controlled Co3O4 as Advanced Electrode Materials for High-Performance Supercapacitor
... Among these two Co3O4 electrode materials, the Co3O4 nano-spheres shows more excellent electrochemical performance, with 96% capacity retention after 5000 cycles at the high current dens[r] ...
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Advanced Co3O4 interlayer as an efficient polysulfide barrier for high-performance Li-S batteries
... Figure 4 shows the cycle performance of Li-S battery using Co3O4 interlayer and without interlayer at the current density of 0.1 C.. It can be seen that the capacity of the Co3O4 interla[r] ...
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MnO2, Co3O4 and MnO2:Co3O4 Stacked Thin Film Electrodes for Supercapacitor
... International Journal for Research in Applied Science & Engineering Technology IJRASET SEM images clearly indicated the enhanced porous nature of MnO2:Co3O4 stacked oxide as compared to [r] ...
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