A5000728338- Ferroelectric and Piezoelectric Materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Nuclear materials and radiation effects
- Acoustic Wave Resonator Technologies
- Conducting polymers and applications
- Malaria Research and Control
- Phytoestrogen effects and research
- Catalysis and Oxidation Reactions
- Edible Oils Quality and Analysis
- Carbon and Quantum Dots Applications
- Infant Nutrition and Health
- Hybrid Renewable Energy Systems
- Nanoparticles: synthesis and applications
- Botanical Research and Applications
- Fatty Acid Research and Health
- Dielectric materials and actuators
- Nanomaterials for catalytic reactions
- Analytical Chemistry and Sensors
- Graphene and Nanomaterials Applications
- Spectroscopy and Chemometric Analyses
- Advanced Photocatalysis Techniques
- Nanocluster Synthesis and Applications
- Environmental remediation with nanomaterials
- Gold and Silver Nanoparticles Synthesis and Applications
University of Sassari
2015-2021
National Interuniversity Consortium of Materials Science and Technology
2015-2019
Abstract Thermal decomposition of citric acid is one the most common synthesis methods for fluorescent carbon dots; reaction pathway is, however, quite complex and details are still far from being understood. For instance, several intermediates form during process they also give rise to species. In present work, formation C‐dots has been studied as a function time by coupling infrared analysis, X‐ray photoelectron spectroscopy, liquid chromatography/mass spectroscopy (LC/MS) with change...
Genistein has been reported to have antioxidant and neuroprotective activity. Despite encouraging in vitro vivo results, several disadvantages such as poor water solubility, rapid metabolism, low oral bioavailability limit the clinical application of genistein. The aim this study was design characterize genistein-loaded chitosan nanoparticles for intranasal drug delivery, prepared by ionic gelation technique using sodium hexametaphosphate. Nanoparticles were characterized their cytotoxicity...
Graphene oxide/iron (III–VI) oxides nanocomposites have been produced with a fast and one-pot synthesis. K2FeO4 (Fe(VI)-based compound), obtained from dry synthesis, has used as green oxidant of graphite to produce graphene oxide, avoiding the use toxic permanganates. oxide flakes low oxidation degree decorated iron in one-step reaction. The material characterized by several techniques investigate structure (SEM, TEM analysis), composition (X-ray fluorescence, XPS, FTIR, UV–visible, Raman...
Malaria represents one of the most common infectious diseases which becoming an impellent public health problem worldwide. Antimalarial classical medications include quinine-based drugs, like chloroquine, and artesunate, a derivative artemisinin, molecule found in plant Artemisia annua. Such therapeutics are very effective but show heavy side effects drug resistance. In this study, "green" silver nanoparticles (AgNPs) have been prepared from two species (A. abrotanum A. arborescens),...
Enzyme-based sensors have emerged as important analytical tools with application in diverse fields, and biosensors for the detection of glucose using enzyme oxidase been widely investigated. In this work, preparation by electrochemical polymerization (poly)thiophenes, namely 2,2′-bithiophene (2,2′-BT) 4,4′-bis(2-methyl-3-butyn-2-ol)-2,2′-bithiophene (4,4′-bBT), followed immobilization on films, is described. N-cyclohexyl-N′-(2-morpholinoethyl)carbodiimide metho- p -toluenesulfonate (CMC) was...
Ultrasonic imaging system is a non‐invasive medical technique that has become one of the most widely used diagnostic tools in modern medicine for detecting prenatal anomalies and deep screening biological tissues. One core components ultrasound represented by probe where located transducer which produces mechanical energy response to electrical signals, conversely, produce signals stimulus. The generally made piezoelectric ceramic material such as lead zirconate titanate (PZT), present two...
Due to the ever‐increasing restrictions connected use of toxic lead‐based materials, developing lead‐free piezoceramics has become one most urgent tasks. In this context, potassium sodium niobate materials (KNN) have attracted a lot interest as promising candidates due their excellent piezo properties. For reason, many efforts been addressed optimize synthesis process now suffering by several drawbacks including high volatilization and at conventional temperature treatments expensive metal...
Cyclopentyl methyl ether and 2-methyltetrahydrofuran, low impact ethereal solvents forming a positive azeotrope with water, were successfully employed as in the synthesis of variety acetals carried out under Dean–Stark conditions presence heterogeneous acidic catalysts. Under these conditions, ammonium salts, either such or supported on SiO2, performed better equally well than widely homogeneous catalysts p-toluenesulfonic acid, Amberlyst 15®, Montmorillonite K10. Several examples highlight...
The treatment of used vegetable oils (UVOs) with clays represents a pivotal step in their industrial recycling process as well one the most challenging topics for researchers. In particular, cheap, effective, and sustainable powders need to be explored order develop new processes which produce beneficial results relation economic environmental aspects. this context, five samples within commercial waste were treated two sodium- calcium-based bentonites employing low oil/bentonite ratio (0.15...
VNbO<sub>5</sub> with a revised space group <italic>P</italic>212121 <italic>versus Pnma</italic> has been successfully synthesized by solvent-free mechanochemical route.
In this work, piezoceramics of the lead-free composition K0.5 Na0.5 NbO3 with an increasing amount MgNb2 O6 (0, 0.5, 1, 2 wt.%) were prepared through conventional solid-state synthesis and sintered in air atmosphere at 1100 °C. The effect magnesium niobate addition on structure, microstructure piezoelectric properties was evaluated. ceramics maintain orthorhombic Amm2 phase for all compositions, while Pbcm secondary found concentration . Our results show that densification these can be...
<italic>In situ</italic> synchrotron and conventional XRD patterns were solved for the phase developed at 700 °C with <italic>Amm</italic>2 orthorhombic space group, lattice parameters <italic>a</italic> = 21.187 Å; <italic>b</italic> 3.827 <italic>c</italic> 19.377 β 119.83° chemical composition V<sub>4</sub>Nb<sub>20</sub>O<sub>60</sub> (ρ 4.09 g cm<sup>−3</sup>).