Two one-dimensional hierarchical hybrid nanostructures composed of NiCo2O4 nanorods and ultrathin nanosheets on carbon nanofibers (CNFs) are controllably synthesized through facile solution methods combined with a simple thermal treatment. The structure of NiCo2O4 can be easily controlled to be nanorods or nanosheets by using different additives in the synthesis. These two different nanostructu...

Green-chemistry type procedures were used to synthesize Pd nanostructures encapsulated by a vanadium-substituted Wells-Dawson-type polyoxometalate (Pd@POM). The cyclic voltammogram run with the Pd@POM-modified glassy carbon electrode shows well-defined waves, associated with Pd nanostructures and the V/V redox couple. The Pd@POM-modified electrode displayed remarkably reproducible cyclic voltam...

Colloidal route is one of the favored ways toward cost-effective large scale production of various nanostructures [1]. In our study, different types of nanoparticles have been designed and synthesized via colloidal approach, which can be applied for energy storage and other energy-type applications. For example, dispersible mesoporous nitrogen-doped hollow carbon nanoplates have been made by us...

Carbon microand nanostructures has received widespread interest recently due to their potential applications in biomedical devices, chemical sensors, and microelectronics. In this work, we successfully fabricated carbon-micro and nano electromechanical systems (CMEMS/NEMS) by UV/EB lithography and pyrolysis method. Our starting material is a negative photoresist, SU-8. We tried to solve chargin...

We use ab initio density functional calculations to study the formation and structural as well as thermal stability of cellular foamlike carbon nanostructures. These systems with a mixed sp(2)/sp(3) bonding character may be viewed as bundles of carbon nanotubes fused to a rigid contiguous 3D honeycomb structure that can be compressed more easily by reducing the symmetry of the honeycombs. The f...

Resistive memory effect has been found in carbon nanostructure-based devices by Standley et al. Nano Lett. 8, 3345 2008 . Compared to nanostructures, hydrogenated amorphous carbon a-C:H has much more controllable preparation processes. Study on a-C:H-based memory is of great significance to applications of carbon-based electronic devices. We observed nonvolatile resistance memory behaviors in m...

A vanadium oxide-carbon nanotube composite was prepared by solution-based hydrolysis of NH4VO3 in the presence of carbon nanotubes. The carbon nanotubes induce the nucleation of the 1D vanadium oxide nanostructures, with the nuclei growing into long freestanding nanorods. The vanadium oxide nanorods with the lengths up to 20 μm and the widths of 5–15 nm exhibit a well-ordered crystalline struct...

The short-range order of individual fractal-like amorphous carbon nanotips was investigated by means of energy-filtered electron diffraction in a transmission electron microscope (TEM). The nanostructures were grown in porous silicon substrates in situ within the TEM by the electron beam-induced deposition method. The structure factor S(k) and the reduced radial distribution function G(r) were ...

In this study, undoped ZnO and doped with Fe and Mn nanostructures were synthesized by hydrothermal method. The morphology of nanostructures was characterized by Scanning Electron Microscope. The electrochemical response of the carbon paste electrode modified with nanoparticles of ZnO and also ZnO doped with Fe and Mn toward levodopa (L-Dopa) was studied. Studies of cyclic voltammetry using pro...

We present here an exhaustive ab initio study of the use of carbon-based tips as electrodes in single-molecule junctions. Motivated by recent experiments, we show that carbon tips can be combined with other carbon nanostructures, such as graphene, to form all-carbon molecular junctions with molecules like benzene or C60. Our results show that the use of carbon tips can lead to relatively conduc...