Bioactive glasses
are well-known materials suitable for bone-related
applications thanks to their biocompatibility and osteoconductivity.
In order to improve their in vivo performance, the modification of the glass composition by adding
ions with specific biological functions is required. As copper (Cu)
possesses antibacterial properties, in this study, 5 wt % of CuO has
been added to the 45S5 bioactive glass composition. The investigation
of the effect of the Cu-containing bioactive glass on cellular behavior
has revealed that the presence of Cu induces an early differentiation
of human mesenchymal stem cells through osteoblast phenotype, promotes
the expression of anti-inflammatory interleukin, and reduces proinflammatory
interleukin expression. With the aim to produce coatings with antibacterial
properties, the Cu-containing bioactive glass was used as the target
material for the pulsed laser deposition (PLD) of bioactive thin films.
PLD experiments were carried out at different substrate temperatures
to study the effect on the film’s characteristics. All of the
films are compact, crack-free, and characterized by a rough morphology
and good wettability. The in vitro bioactivity was demonstrated by
the apatite growth on the coating surface, after soaking in simulated
body fluid, revealed by Raman spectroscopy and scanning electron microscopyenergy
dispersive X-ray analyses. The antibacterial study proved that the
material showed more effective activity against three Gram-negative
bacteria (Pseudomonas aeruginosa, Escherichia coli, Salmonella enterica) rather than against Gram-positive bacteria (Staphylococcus
aureus).
, in order to obtain higher redox potentials. In this communication we report a systematic analysis of the synthesis condition of LiCoPO4 (LCP) using a solvo-thermal route at low temperature, the latter being a valuable candidate to overcome the theoretical performances of LFP. In fact, LCP shows higher working potential (4.8 V vs. 3.6 V) compared to LFP and similar theoretical capacity (167 mAh·g −1 ). Our goal is to show the effect of the synthesis condition of the ability of LCP to reversibly cycle lithium in electrochemical cells. LCP samples have been prepared through a solvo-thermal method in aqueous-non aqueous solvent blends. Different Co 2+ salts have been used to study the effect of the anion on the crystal growth as well as the effect of solution acidity, temperature and reaction time. Materials properties have been characterized by Fast-Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopies. The correlation between structure/morphology and electrochemical performances has been investigated by galvanostatic charge-discharge cycles.
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