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Article
Open AccessCatalytic Effect of Pd Clusters in the Poly(N-vinyl-2-pyrrolidone) Combustion
Pd(0) is able to catalyze oxygen-involving reactions because of its capability to convert molecular oxygen to the very reactive atomic form. Consequently, the embedding of a little amount of Pd(0) clusters in ...
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Chapter
Chapter 2 Composite Materials
Composites are combined materials created by the synthetic assembly of two or more components – a selected reinforcing agent and a compatible matrix binder – in order to obtain specific and advanced characteri...
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Article
Bioethanol as feedstock for chemicals such as acetaldehyde, ethyl acetate and pure hydrogen
In the present paper, the development of new heterogeneous catalytic processes to produce high commodity chemicals of industrial interest such as acetaldehyde, ethyl acetate, and pure hydrogen by bioethanol ha...
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Chapter and Conference Paper
THE ROLE OF INTERFACE IN THE MECHANISM OF HYDROGEN ABSORPTION BY METAL-POLYMER COMPOSITES
We have studied the hydrogen storage capacity and sorption kinetics of composite materials made of LaNi5 particles dispersed into hydrogen permeable polymers. Samples consisted of metal particles well separated a...
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Article
Preparation and characterization of transparent/conductive nano-composites films
Polymer-embedding of nano-sized indium tin oxide (SnO·In2O3, ITO) produces electrically conductive materials transparent to the visible light at filling factors higher than the percolation threshold. ITO powders ...
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Article
Optical characterization of the polymer embedded alloyed bimetallic nanoparticles
A theoretical approach for the calculation of the bimetallic nanoparticles absorption spectra has been developed as an extension of the Mie theory in which nanoparticle dielectric function is found by the w...
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Article
On-line monitoring of Au nanoparticles formation by optical spectroscopy
Experimental results concerning the synthesis of gold nanoparticles prepared by alcoholic reduction of Au(III) ions in presence of a polymeric stabilizer, and UV-visible spectroscopic characterization is prese...
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Article
Synthesis and characterization of gold-based quantum dots
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Article
Preparation and characterization of cobalt-based nanostructured materials
Nano-sized cobalt clusters passivated by alkane-thiol molecules were obtained by the action of concentrated thiol solutions on micrometric cobalt particles. Thiol molecules caused an erosive process on the met...
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Article
Spectroscopic Study of the Growth Mechanism of Silver Microclusters
Polymer-protected silver microclusters have been obtained by room-temperature alcoholic reduction of metal ions in presence of a polymeric stabilizer (i.e., poly(N-vinyl-2-pyrrolidone) (PVP)). The method allow...
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Article
A qualitative model for the growth mechanism of silver clusters in polymer solution
A simple and high-reproducible method for the synthesis of polymer-protected silver cluster of controlled size is described. UV-visible spectroscopy has been used for investigating the influence of the aging o...
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Article
Low temperature magneto-conductivity properties of micro-sized Ag/HD-PE metal/polymers
A composite material of a polyethylene matrix filled by a fine silver powder was prepared with different Ag contents and physical behaviours ranging from insulator to conductor. Ac differential magnetic suscep...
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Article
Dependence of the order–disorder transition temperature of 1-octadecanethiol/silver system on the substrate size
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Article
Preparation and characterization of nano-sized Ag/PVP composites for optical applications
A modification of the polyol process has enabled the direct synthesis of nm-sized Ag particles with narrow size distribution and controlled average dimension embedded in a polymeric matrix. Dispersion of collo...
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Article
Low-temperature anomalous magnetic properties of μ-sized Ag/HDPE composites
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Article
Macroporous hydroxyapatite as alloplastic material for dental applications
In the dentistry field, synthetic hydroxyapatite can be conveniently used as semiabsorbable alloplastic material to solve a number of clinical problems. The hydroxyapatite structure influences bone ingrowth as...
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Article
Preparation and characterization of new electrocardiogram electrodes
A new generation of electrocardiogram (ECG) electrodes have been fabricated and superficially modified by a special controlled precorrosion process. The electrodes have been characterized by scanning electron ...
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Article
Dense/Porous Layered Hydroxylapatite Ceramic for Orthopedic Device Coating Prepared by Tape Casting Technique
A possible surgical technique in the replacement of a traumatized hip joint by a prosthesis system is to connect the acetabular component of the implant directly with pelvis bone tissue, without use of bone ce...
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Chapter
Composite materials
Composites are combined materials created by the synthetic assembly of two or more components — a selected reinforcing agent and a compatible matrix binder — in order to obtain specific and advanced characteri...
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Article
A Review of Ceramic Sintering and Suggestions on Reducing Sintering Temperatures
Theories and applications associated with sintering of ceramics and reducing of sintering temperature are reviewed. The whole sintering process is divided into three sub-processes as powder preparation, compac...
