In this report, functional one-dimensional (1-D) Pt-Co3O4 heterostructures with enhanced electrochemical properties were synthesized via colloidal polymerization of polymer-coated ferromagnetic cobalt nanoparticles (PS-CoNPs). Colloidal polymerization of dipolar nanoparticles into hollow metal-semiconductor nanowires was achieved via a consecutive galvanic replacement reaction between Co and Pt...

The maximum magnetisation (saturation magnetisation) obtainable for iron oxide nanoparticles can be increased by doping the nanocrystals with non-magnetic elements such as zinc. Herein, we closely study how only slightly different synthesis approaches towards such doped nanoparticles strongly influence the resulting sub-nano/atomic structure. We compare two co-precipitation approaches, where we...

BACKGROUND Tungsten carbide nanoparticles are being explored for their use in the manufacture of hard metals. To develop nanoparticles for broad applications, potential risks to human health and the environment should be evaluated and taken into consideration. OBJECTIVE We aimed to assess the toxicity of well-characterized tungsten carbide (WC) and cobalt-doped tungsten carbide (WC-Co) nanopa...

The pyrolysis of transition metal carboxylates into organically modified silica glass-ZrO2 hybrid sol-gel films yields composite materials containing cobalt oxide nanoparticles in various proportions. The particles have sizes ranging from 5 to 10 nm, and they are homogeneously dispersed in the final materials. A reaction temperature near 250°C results in translucent films that have good mechani...

Indium doped zinc oxide hierarchical nanostructures have been synthesized using a simple aqueous solution based method. A change in morphology from hierarchical nanostructures in ZnO to nanorods after doping with indium has been observed. The optical properties of nanostructures have been investigated using diffuse reflectance and photoluminescence spectroscopy. The band gap of zinc oxide nanop...

• Microwave-assisted cobalt oxide (Co 3 O 4 ) based nanocomposite electrodes doped with carbon dots and reduced graphene oxide. The dot containing enables the highest specific capacitance of 936 Fg ?1 at 0.5 Ag current density. cyclic stability is reasonably high, retain 93%, 87%, 88% their initial after 10,000 cycles for Co , @RGO, @RGO@CDs. optimized @RGO@CDs were used to fabricate a symmetri...

The combination of plasmonic material and magnetic metal oxide nanoparticles is widely used in multifunctional nanosystems. Here we propose a method for the fabrication gold/cobalt ferrite nanocomposite biomedical applications. composite includes gold cores ~10 nm diameter coated with arginine, which are surrounded by small cobalt diameters ~5 covered dihydrocaffeic acid. structure elemental co...

the preparation of nanostructure type manganese oxide and cobalt oxide materials with the smallest particle size is reported here. the nanorod manganese oxide and cobalt oxide nanotube were prepared via a sol-gel reaction in reverse micelles from kmno4 and cocl2 with respectively source at room-temperature. the structure and surface morphology of the obtained manganese oxide were studied by mea...

Abstract A 3D self-supported integrated electrode, consisting of heteroatomic nitrogen-doped carbon nanotube arrays on cloth with confined ultrafine Co 4 N nanoparticles and a distribution anchored single-atom Co, is fabricated via cobalt-catalyzed growth strategy using dicyandiamide as the nitrogen source layered cobalt hydroxide-nitrate salt precursor. The abundance exposed active sites, name...