A method for the production of reduced graphene oxide using benzylamine as a reducing and stabilizing agent and its subsequent decoration with Ag nanoparticles for enzymeless hydrogen peroxide detection

VO2-based films are thermochromic and show infrared reflectance above a “critical” temperature in the vicinity of room temperature. Implementations on energy efficient windows have been discussed for decades but have been severely curtailed since the luminous absorptance is undesirably large and the solar energy transmittance modulation is too small. Here we show by calculations based on effective medium theory that dilute composites with VO2 nanoparticles embedded in hosts with properties mimicking glass or polymer can yield significantly decreased luminous absorption jointly with much enhanced transmittance modulation of solar energy. These results demonstrate that VO2-based nanothermochromics opens new avenues toward energy efficient fenestration.

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Nanothermochromics: Calculations for VO2 nanoparticles in dielectric hosts show much improved luminous transmittance and solar energy transmittance modulation

Nanotubes constitute an exciting class of one-dimensional nanomaterials of which carbon nanotubes are recognized widely as materials of importance. The possibility of having inorganic nanotubes was recognized early in the 1990s, accompanied by the report of nanotubes of MoS 2 and WS 2 . Since then, nanotubes of several inorganic materials have been prepared and characterized. While nanotubes of metal chalcogenides and oxides form a high proportion of the inorganic nanotubes investigated hither to, nanotubes of many other materials have also been prepared and characterized. Several synthetic strategies including both physical and chemical methods have been employed, of which the use of templates, precursors, and hydro- or solvothermal methods are prominent. In this article, we shall present a brief account of the present status of the synthesis of nanotubes of elemental materials as well as binary and complex metal oxides, chalcogenides, pnictides and carbides.

Synthesis of Inorganic Nanotubes

One dimensional nanomaterials have attracted much attention from academia and industry. A large series of devices have been created on the basis of 1D nanomaterials. Their applications have changed and will continuously change our daily life. In this paper, we will present a comprehensive review on the synthesis, structure characterization, properties and actual and future potential applications of one dimensional nanomaterials. Due to the large number of review papers on Carbon and ZnO nanomaterials, we will focus only on one dimensional nanostructures based on other important metal oxides than ZnO based 1D nanomaterials. Different general synthesis strategies have firstly been presented. A series of very promising and representative 1D metal oxide nanaomaterials, their synthesis and properties, will then be discussed. The applications of these 1D metal oxide nanomaterials in catalysis, photocatalysis, electrocatalysis, in sensors development, in solar cells, in field effect transistor development, in Li...

One-Dimensional Metal Oxide Nanotubes, Nanowires, Nanoribbons, and Nanorods: Synthesis, Characterizations, Properties and Applications

Synthesis and electrochemical properties of vanadium oxide materials and structures as Li-ion battery positive electrodes

A one-step hydrothermal way for the synthesis of vanadium oxide nanotubes containing the phenylpropylamine as template obtained via non-alkoxide route

Controlled hydrothermal synthesis of VO2(B) nanobelts

Vanadium dioxide nanorod B phase with high purity and crystallinity was synthesized by using the crystalline V2O5 as precursor and benzylamine for the first time as reducing agent via hydrothermal method. The structure and morphology of the sample were characterized by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, thermal analysis and infrared spectroscopy. Regularly sized nanorod B phase VO2 is about 20–100 nm wide and up to 2.5m long. © 2006 Elsevier B.V. All rights reserved.

Nanorod B phase VO2 obtained by using benzylamine as a reducing agent

Nanoneedles B phase VO2 with high crystallinity was hydrothermally synthesized from the foam prepared by mixing V2O5, aniline and H2O in the mol ratio 1:1:258. The samples have been characterized by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction and thermal analysis. Regularly sized VO2(B) nanoneedles have the following dimensions: 0.5–5 μm in length and about 50 nm in average diameter. According to transmission electron microscopy investigations, the V2O5 crystals resulting from the foam exhibit nanoparticles sizes between 50 and 100 nm. This way of synthesis provides a new simple and elegant route to elaborate the vanadium dioxide VO2(B) nanoneedles and V2O5 nanoparticles under soft conditions.

From V2O5 foam to VO2(B) nanoneedles

V 2 O 3 with spherical particles was hydrothermally synthesized (240 °C, 48 h, autogenous pressure) as a single-phase material from a mixture of V 2 O 5 , 1,6-diaminohexane and H 2 O in the mol ratio 1:1:269. It was characterized by scanning electronic microscopy, X-ray powder diffraction, thermal analysis and electron paramagnetic resonance.

F. Sediri

Papers

A one-step hydrothermal way for the synthesis of vanadium oxide nanotubes containing the phenylpropylamine as template obtained via non-alkoxide route

Controlled hydrothermal synthesis of VO2(B) nanobelts

Nanorod B phase VO2 obtained by using benzylamine as a reducing agent

From V2O5 foam to VO2(B) nanoneedles

Hydrothermal synthesis and characterization of V2O3