A5077091078- Bone Tissue Engineering Materials
- Ferroelectric and Piezoelectric Materials
- Silicone and Siloxane Chemistry
- Mesoporous Materials and Catalysis
- Glass properties and applications
- Dental materials and restorations
- Microwave Dielectric Ceramics Synthesis
- Dental Implant Techniques and Outcomes
- Advanced ceramic materials synthesis
- Aerogels and thermal insulation
- Luminescence Properties of Advanced Materials
- Acoustic Wave Resonator Technologies
- Calcium Carbonate Crystallization and Inhibition
- Polymer Nanocomposite Synthesis and Irradiation
- Pigment Synthesis and Properties
- Chemical Synthesis and Characterization
- Analytical Chemistry and Sensors
- Muon and positron interactions and applications
- Electronic and Structural Properties of Oxides
- Polymer Nanocomposites and Properties
- Additive Manufacturing and 3D Printing Technologies
- Perovskite Materials and Applications
- Diatoms and Algae Research
- Polyoxometalates: Synthesis and Applications
- Collagen: Extraction and Characterization
University of Aveiro
2013-2022
University of Chemical Technology and Metallurgy
2008
University of Sheffield
2003
Lucideon (United Kingdom)
2000
Sol–gel derived films exhibit a high potential as substitutes for the environmentally unfriendly chromate metal-surface pre-treatment methods. Inorganic sol–gel offer good adhesion between metals and organic paint. However, they cannot provide adequate corrosion protection due to their crack-forming potential. Introduction of an component inorganic system leads formation thicker, more flexible functionalized with enhanced compatibility different top coatings. Incorporation nanoparticles in...
Abstract Methylcellulose (MC) / SiO2 organic inorganic hybrid materials have been prepared from MC and methyltriethoxysilane or ethyltrimethoxysilane, characterized by XRD, FTIR AFM. XRD showed peak shifts. shows intermolecular hydrogen bonding between SiO2. AFM depicts surface roughness which depends on the silica precursor content.
Lead zirconate titanate (PZT) (52/48) powders were prepared by a sol–gel process, using different raw materials to introduce the lead component together with several solvents and chemical modifying agents. A study of effect these variables on crystallization behavior was conducted determine best conditions for preparing monophasic submicrometer‐sized PZT perovskite in morphotropic region. In present work, well‐crystallized, single‐phase obtained after heat treatment at 600°C 1 h. The...
This article reports on the early stages of nucleation and growth texture development perovskite phase in PZT(52/48) seeded unseeded sol−gel thin films. Transmission electron microscopy (TEM) X-ray diffraction (XRD) revealed that, films, nucleates grows at film surface, seed particles Pt/PZT interface. In contrast, for only occurs from PZT/Pt At low pyrolysis temperatures, crystalline density is much higher than The formation process consequently accelerated by presence seeds. PZT films with...
Poly(dimethylsiloxane) (PDMS)–SiO2–CaO-based hybrid materials prepared by sol–gel have proved to be very promising for tissue engineering applications and drug-delivery systems. These hybrids are biocompatible present osteogenic bioactive properties supporting osteoblast attachment bone growth. The incorporation of therapeutic elements in these materials, such as boron (B) calcium (Ca), was considered this study an approach develop biomaterials capable stimulating regeneration. main purpose...
Abstract In this work we present our experimental results on synthesis, structure evolution and in vitro bioactivity assessment of new gelatin/silicocarnotite hybrid materials. The hybrids were obtained by diluting gelatin (G) silicocarnotite (S) ceramic powder with G:S ratios 75:25 25:75 wt.% hot (40°C) water. characterized using XRD, FTIR, SEM/EDS XPS. FTIR depicts that the “red shift” amide I COO− could be attributed to fact prefers chelate Ca2+ from S. growth calcium phosphates surface...
We report the first ever robocast (additive manufacturing/3D printing) sintered ceria scaffolds, and explore their use for production of renewable fuels via solar thermochemical fuel (STFP, water carbon dioxide splitting using concentrated energy). CeO2 catalyst scaffolds were fabricated as 50 mm diameter discs (struts voids ∼500 μm), at 1450 °C, with specific surface area 1.58 m2 g-1. These have hierarchical porosity, consisting macroporous scaffold structure combined nanoscale porosity...
Abstract Synthesis of sol‐gel glass with incorporation Na 2 O is extremely difficult, as such glasses have a great tendency to crystallize. Slow drying and aging over several days or weeks usually required in preparation procedures. This work reports fast, novel route for the synthesis bioglass powders considerably shortened period 1 h. A comparative study derived made by this using rotary evaporator drying, conventional oven aging, revealed that two methods produce stabilized (devitrified)...