Role of reactive species in processing materials at laboratory temperature by spray plasma devices
-
Mehrdad Nikravech
,
Kamal Baba
Abstract
Processing the aerosol of metal salts in non-equilibrium plasma represents a promising technique that combines the advantages of spray pyrolysis with the high reactivity of plasmas at nearlaboratory temperature in order to produce mixed-oxides and perovskite materials. The aim of this paper is to describe the principles of this new technique and to present the various applications and latest developments. This technique’s capacity to deposit various mixed metal oxides with precise stoichiometry is demonstrated. It is shown that oxidant plasma species play a key role in the chemical transformation of starting materials into oxides at laboratory temperature, while the configuration of the reactor determines the morphology and texture of the deposited layers. Two different reactor configurations are presented. The porous layers of LaxSr1−x MnO3 as the cathode for fuel cells were synthesised in a wave shock reactor configuration, while nanostructured ZnO-Al layers to form a transparent conductive cathode for photovoltaic cells were deposited in the spray plasma reactor of the latest generation for this technique. The experimental results emphasise the role of plasma species in the rate of chemical reactions and in the chemical composition of the deposited layers.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Ultrathin organic, inorganic, hybrid, and living cell coatings — Topical Issue
- Functional polymer thin films designed for antifouling materials and biosensors
- In-situ polymerized molecularly imprinted polymeric thin films used as sensing layers in surface plasmon resonance sensors: Mini-review focused on 2010–2011
- Design of polyglycidol-containing microspheres for biomedical applications
- On the interfacial chemistry of aryl diazonium compounds in polymer science
- Polypyrrole coating of inorganic and organic materials by chemical oxidative polymerisation
- Spectroscopy of thin polyaniline films deposited during chemical oxidation of aniline
- Ultrathin functional films of titanium(IV) oxide
- Sol-gel thin films with anti-reflective and self-cleaning properties
- Nanostructured electrocatalysts immobilised on electrode surfaces and organic film templates
- Influence of adsorbed oxygen on charge transport and chlorine gas-sensing characteristics of thin cobalt phthalocyanine films
- Ni-W alloy coatings deposited from a citrate electrolyte
- Role of reactive species in processing materials at laboratory temperature by spray plasma devices
- Electrodeposition of hafnium and hafnium-based coatings in molten salts
- Role of interfacial chemistry on the rheology and thermo-mechanical properties of clay-polymer nanocomposites for building applications
- Endothelial cell adhesion on polyelectrolyte multilayer films functionalised with fibronectin and collagen
