Characterization and properties of nanophases prepared by solar physical vapor deposition (SPVD)‎ in the solar reactor heliotron

الملخص EN

Solar Physical Vapor Deposition (SPVD) is an original process for preparing Nano powders.

This method has been developed in Odeillo-Font Romeu in France using solar reactors working under concentrated sunlight in 2 kW solar furnaces.

Various Nan phases, pure or containing other elements in addition, have been obtained.

Among them are ZnO, Zn1-xAlxO, Zn1-xCoxO, and metallic Zn Nan phases, TiO2 and Fe, Co or Mn-doped TiO2, mixtures of (Zn1-xBixO) and (Bi1yZny) 2O3 Nano phases, and complex nanoparticles such as MgO coated Fe nanoparticles.

It is shown that the X-ray diffraction analysis allows a fine nanostructure characterization of these Nano powders while informing on their composition and on coherence diffraction domain (size and shape anisotropy).

In many cases, HRTEM or SEM complements the XRD analysis.

A study of the properties of these Nano powders highlighted original behaviors in several fields such as chemical reactivity, photo catalysis, magnetic properties, luminescence, etc.

When massive nanomaterial was prepared from these Nano powders, macroscopic properties such as electrical conductivity can be enhanced.