José Ferreira

José Ferreira
University of Aveiro | UA · Department of Materials and Ceramics Engineering

PhD

About

704
Publications
158,311
Reads
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19,879
Citations
Introduction
José Ferreira currently works at the Department of Materials and Ceramics Engineering, University of Aveiro. José does research in Inorganic Chemistry, Materials Chemistry and Nanotechnology. Their current project is 'Alkali-free bioactive glasses for bone regenration applications', calcium phosphate-based biomaterials and composite materials for health care applications.
Additional affiliations
December 1982 - present
University of Aveiro
Position
  • Professor (Associate)
Description
  • Colloidal processing and microfabrication of ceramic materials. Nanomaterials. Biomaterials (bioactive glasses and glass-ceramics, calcium phosphate based materials, bone cements, composites, etc.). Glass-ceramic sealants for SOFC;
December 1982 - present
University of Aveiro
Position
  • Professor (Associate)
Description
  • Processing of ceramic materials; Colloidal processing techniques; Advanced preparation methods; Recycling and new products; Chemistry and Physics of Surfaces; Tissue Engineering and Therapeutics; Laboratories of Biomedical Engineering.
Education
October 1989 - March 1993
University of Aveiro
Field of study
  • Materials Science and Engineering

Publications

Publications (704)
Article
Utilization of optical limiting materials to suppress the input intense laser energy is obligatory in a wide variety of applications that deploy the high‒power laser sources. In this letter, we demonstrate that the optimization of borate structural units in lanthanum borate (LB) glasses through the addition of various concentrations of heavy metal...
Article
Full-text available
The incorporation of therapeutic-capable ions into bioactive glasses (BGs), either based on silica (SBGs) or phosphate (PBGs), is currently envisaged as a proficient path for facilitating bone regeneration. In conjunction with this view, the single and complementary structural and bio-functional roles of CuO and Ga2O3 (in the 2–5 mol% range) were a...
Article
We report the first ever robocast (additive manufacturing/3D printing) sintered ceria scaffolds, and explore their use for the production of renewable fuels via solar thermochemical fuel production (STFP, water and carbon dioxide splitting using concentrated solar energy). CeO2 catalyst scaffolds were fabricated as 50 mm diameter discs (struts and...
Article
Full-text available
The present study deals with the development of multifunctional biphasic calcium phosphate (BCP) scaffolds coated with biopolymers—poly(ε-caprolactone) (PCL) or poly(ester urea) (PEU)—loaded with an antibiotic drug, Rifampicin (RFP). The amounts of RFP incorporated into the PCL and PEU-coated scaffolds were 0.55 ± 0.04 and 0.45 ± 0.02 wt%, respecti...
Article
Full-text available
3D printing emerged as a potential game-changer in the field of biomedical engineering. Robocasting in particular has shown excellent capability to produce custom-sized porous scaffolds from pastes with suitable viscoelastic properties. The materials and respective processing methods developed so far still need further improvements in order to obta...
Article
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In view of recent energy crisis and environmental considerations, reductions of melting temperature and CO2 emissions during the production of commercial soda lime silicate (SLS) glass at industrial scale are major intentions. Here we show that this goal can be achieved by using carbonate-free borate minerals such as colemanite (Ca2B6O11·5H2O) and...
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Sol–gel synthesis using inorganic and/or organic precursors that undergo hydrolysis and condensation at room temperature is a very attractive and less energetic method for preparing bioactive glass (BG) compositions, as an alternative to the melt-quenching process. When properly conducted, sol–gel synthesis might result in amorphous structures, wit...
Article
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This study aimed to fabricate three‐dimensional (3D) bioactive Sr²⁺ substituted apatite (Sr‐HAP) scaffolds prepared by gel‐casting with polymer sponge infiltration technique. Three dimensional (3D) Sr‐HAP scaffolds were prepared as engineering constructs with interconnected porous structure with a pore size of 200μm to 600μm ranging from a 10mm×10m...
Article
In this paper we present a new series of alkali‐free bioactive glasses (BG) based on FastOs® composition (38.49 SiO2 – 36.07 CaO – 19.24 MgO – 5.61 P2O5 – 0.59 CaF2, expressed in mol %), which was modified by partially replacing silicon dioxide network‐former with boron trioxide network‐former, utilizing calcium oxide as a charge compensator. The m...
Article
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Yttria‐stabilized zirconia (YSZ) scaffolds with a planned macro porosity fraction of about 70% were fabricated by Robocasting from inks with high solid loadings. The effects of solids loading and the concentrations of processing additives on the flow behavior of the starting suspensions and the viscoelastic properties of the resulting inks were inv...
Article
This work is a proof of concept for making load bearing implants with osseointegration and bone bonding ability. Yttria‐Stabilized Zirconia (YSZ) scaffolds with a percentage of macro porosity of about 70% were fabricated by robocasting. Although a maximum solids volume fraction of 50 vol.% could be achieved, the 3D‐printing process revealed to be m...
Article
This study addresses the preparation of hybrid nanoparticles comprised of magnetite (Fe3O4) cores and a surface functionalized with tetramethylammonium hydroxide (TMAOH). The stabilized core nanoparticles were subsequently coated with a polymer matrix consisting of poly(L-co-D,L lactic acid-co-trimethylene carbonate) and poly(ethylene oxide) − poly...
Article
Currently, there is a considerable time-lag in the industrialization of innovative technological solutions for the functionalization of osseous implants, with ever-demanding healthcare requirements (e.g., controlled release of therapeutic ions, match of biomaterial degradation – bone growth rates, antimicrobial efficiency). As third-generation biom...
Article
The structural role of V in 28Li2O–72SiO2 (in mol %) lithium silicate glass doped with 0.5 mol % V2O5 was assessed using 29Si and 51V Nuclear Magnetic Resonance (NMR), Fourier‐Transform InfraRed (FTIR) and X‐ray Photoelectron (XPS) spectroscopy techniques. Despite the low amount of V2O5 used, the structural information obtained or deduced from the...
Article
Full-text available
Silica-based bioactive glasses (SBG) hold great promise as bio-functional coatings of metallic endo-osseous implants, due to their osteoproductive potential, and, in the case of designed formulations, suitable mechanical properties and antibacterial efficacy. In the framework of this study, the FastOs®BG alkali-free SBG system (mol%: SiO2—38.49, Ca...
Article
Hydroxyapatite powders were synthesized according to a wet precipitation route and then subjected to heat treatments within the temperature range of 200 − 800 °C. The prepared samples were tested as sorbents for cadmium in an aqueous medium. The best performances were obtained with the material treated at 200 °C (HAp200), as the relevant sorbent te...
Article
The AC magnetically induced heating characteristics of uncoated and silica-coated magnetic iron oxide nanoparticles dispersed in liquids of different viscosities were investigated. The aim was to synthesize and prepare uncoated and silica-coated nanoparticles of maghemite, and evaluate their ability to hyperthermically dissipate heat under an appli...
Article
Over the last three decades, a variety of additive manufacturing techniques have gradually gained maturity and will potentially play an important role in future manufacturing industries. Among them, direct ink writing has attracted significant attention from both material and tissue engineering areas, where the colloidal ink is extruded and dispens...
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Full-text available
In this paper, we present a preliminary study and conceptual idea concerning 3D printing water-sensitive glass, using a borosilicate glass with high alkali and alkaline oxide contents as an example in direct ink writing. The investigated material was prepared in the form of a glass frit, which was further ground in order to obtain a fine powder of...
Preprint
In this paper, we present a preliminary study and conceptual idea concerning 3D printing water-sensitive glass by exemplifying with a borosilicate glass with high alkali and alkaline oxide contents using direct ink writing. The investigated material was prepared in the form of a glass frit, which was further ground in order to obtain a fine powder...
Article
An in situ aqueous precipitation with the aid of Gd3+ as a stabilizer has been used to attain a series of β‐Ca3(PO4)2/t‐ZrO2 composites. Analytical characterization techniques were used to investigate the formation of desired composite during progressive heat treatments. The transformation of calcium deficient apatite to β‐Ca3(PO4)2 that usually oc...
Chapter
As a branch of direct 3D printing technique, Robocasting is a promising candidate to fulfil multiple material printing [1]. Currently, the Robocasting community commonly utilizes small amplitude oscillatory shear (SAOS) tests to evaluate the printability and stiffness of the pastes for Robocasting, while large amplitude oscillatory shear (LAOS) tes...
Article
Exploring the reasons for the initiation of Al-O-Al bond formation in alkali-earth aluminosilicate glasses is a key topic in the glass-science community. Evidence for the formation of Al-O-Al and Al-NBO bonds in the glass composition 38.7 CaO - 9.7 MgO - 12.9 Al2O3 - 38.7 SiO2 (CMAS, mol%) has been provided based on Molecular Dynamics (MD) simulati...
Article
Recycling has emerged as an environmental key point due to the diminishing of natural resources and the generation of ever‐increasing amounts of industrial solid wastes. Glass wastes are among the materials that attract great interest in the recycling concept. This work presents the results of foams production from four series of compositions. The...
Article
Full-text available
The combination of calcium phosphates with bioactive glasses (BG) has received an increased interest in the field of bone tissue engineering. In the present work, biphasic calcium phosphates (BCP) obtained by hydrothermal transformation of cuttlefish bone (CB) were coated with a Sr-, Mg- and Zn-doped sol-gel derived BG. The scaffolds were character...
Article
The present work elucidates about the structure of bioactive glasses having chemical compositions expressed as (mol %) (50.0-x) SiO2 - x B2O3 - 9.3 Na2O - 37 CaO - 3.7 P2O5, where x = 0.0, 12.5, 25 and 37.5, and establishes a correlation between the structure and thermal stability. The structural modifications in the parent boron free glass (B0) wi...
Article
We show the influence of two functional ions (Cu2+ and La3+), incorporated into a quaternary (Si, Ca, Na, P) Sol‐Gel derived bioactive glass system, on its particle size, cytotoxicity and bioactivity. By doping the parent glass with the two ions in singular or combined forms, fifteen doped glasses were prepared by a rapid Sol‐Gel technique. The inf...
Preprint
The combination of calcium phosphates (CaP) with bioactive glasses (BG) has received an increased interest in the field of bone tissue engineering. In the present work, biphasic calcium phosphates (BCP) obtained by hydrothermal transformation (HT) of cuttlefish bone (CB) were coated with a Sr-, Mg- and Zn-doped sol-gel derived BG. The scaffolds wer...
Article
Cuttlefish bone (CB) has been explored as biomaterial in the bone tissue-engineering field due to its unique porous structure and capacity of the aragonite mineral to be hydrothermally converted into calcium phosphates (CaPs). In the present study, undoped and ion (Sr2+, Mg2+ and/or Zn2+) doped biphasic calcium phosphate (BCP) scaffolds were prepar...
Article
FREE DOWNLOAD FOR 50 DAYS at: https://authors.elsevier.com/a/1YVEm3IWkbyP~X Magnetic spinel ferrite particles were successfully prepared from only iron (III) nitrate, using clove and cinnamon plant extracts for the first time as eco-fuels for auto–ignition synthesis. Both natural substances were shown to play dual roles in the synthesis of the mag...
Article
Full-text available
Ni- and Fe-doped CeO2 nanoparticles were prepared by a chemical co-precipitation method and then heat treated at 300 °C. The structural, morphological, and compositional properties of the prepared nanoparticles were studied by powder X-ray diffraction (XRD), Energy Dispersive Spectroscopy (EDS), Scanning Electron Microscopy (SEM) and Fourier-Transf...
Article
Bioactive glass powders synthesised by sol‐gel are usually porous and exhibit high specific surface areas, conferring them poor ability for scaffolds fabrication using colloidal processing approaches. The difficulties assocciated with colloidal processing of sol–gel glass have hindered so far the processing of 3–D scaffolds by robocasting. This res...
Article
FREE DOWNLOAD FOR 50 DAYS at: https://authors.elsevier.com/a/1YoVO~2-EzDU7 This paper reports the hierarchical influence of co-doping copper and lanthanum in a sol–gel derived quaternary (Si, Ca, Na, P) bioactive glass on its sintering ability. The mutual effects of Cu & La on density, crystallisation and sinterability were investigated using Tagu...
Article
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The impact of selective rare-earth (RE) additions in ZrO 2 -based ceramics on the resultant crystal structure, mechanical, morphological, optical, magnetic, and imaging contrast features for potential applications in biomedicine is explored. Six different RE, namely, Yb ³⁺ , Dy ³⁺ , Tb ³⁺ , Gd ³⁺ , Eu ³⁺ , and Nd ³⁺ alongside their variations in th...
Article
FREE DOWNLOAD FOR 50 DAYS AT: https://authors.elsevier.com/a/1YdaM6CFjZC5PW This research details the successful fabrication of scaffolds by robocasting from high silica sol–gel glass doped with Cu2+ or La3+. The parent HSSGG composition within the system SiO2–CaO–Na2O–P2O5 [67% Si – 24% Ca – 5% Na – 4% P (mol%)] was doped with 5 wt.% Cu2+ or La3+...
Article
The ability of manganese to induce early zircon (ZrSiO 4 ) crystallization is investigated. An assorted range of manganese additions to the ZrO 2 [sbnd]SiO 2 binary system through a Sol-Gel approach is attempted to achieve ZrSiO 4 formation at low temperatures. XRD analysis alongside complementary Rietveld refinement tool has been used to determine...
Article
Full-text available
Structural and optical properties of antimony containing sodium borate glasses were studied and their ultrafast third-order nonlinear optical (NLO) properties have been evaluated using Z-scan measurements with femtosecond (fs) pulses (~150 fs, 80 MHz) at 750 nm, 800 nm and 880 nm wavelengths. Glasses in the (mol %) 20Na 2 O-(80-x)B 2 O 3-xSb 2 O 3...
Article
The alleged formation of La-clusters in silicate glasses has received an overall consensus. However, recent and the current experimental results do not support this hypothesis for the structural role of La2O3 in glasses. Therefore, here we propose a new model for the assignment of the peaks in NMR spectra. All the experimental results here reported...
Article
Transition metal ions are essential micronutrients for all living organisms and play an important role in bone metabolism. In the present study, we investigated the impact of transition metal ions (Cu, Co, Mn, Fe) on the structure and bioactivity of bioactive glasses. The emphasis was laid on understanding their influence on the chemical dissolutio...
Article
FREE DOWNLOAD FOR 50 DAYS at: https://authors.elsevier.com/a/1YRYV3PCJl7r8W This article reports the first robocasting of a sol–gel based glass ceramic scaffold. Sol–gel bioactive glass powders usually exhibit high volume fractions of meso– and micro–porosities, bad for colloidal processing as this adsorbs significant portion of the dispersing medi...
Article
Full-text available
The present work aims at evaluating the potential gains derived from partially replacing calcium in resorbable β-tricalcium phosphate (β-TCP) by two different molar percentages of strontium (5, 10) and zinc (1, 2), concomitantly with a fixed molar percentage (0.5) of manganese. Synthetic granular composite bone filling grafts consisting of doped β-...
Article
Full-text available
The discovery of bioactive glasses (BGs) in the late 1960s by Larry Hench et al. was driven by the need for implant materials with an ability to bond to living tissues, which were intended to replace inert metal and plastic implants that were not well tolerated by the body. Among a number of tested compositions, the one that later became designated...
Article
Full-text available
Direct ink writing has become a widespread additive manufacturing technique for material engineering, but its application in lead‐free Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) piezoelectric ceramics from aqueous systems has not been reported so far to our knowledge. The main obstacle is the high extent of hydrolysis reactions undergone by the starting powde...
Article
A series of seven alkali-free silica-based bioactive glasses (SBG) with ZnO and/or SrO additives (in concentrations of 0–12 mol%) were synthesized by melt-quenching, aiming to delineate a candidate formulation possessing (i) a coefficient of thermal expansion (CTE) similar to the one of titanium (Ti) and its medical grade super-alloys (crucial for...
Article
The prevention of microbial infections associated with implantable medical devices and superficial wounds represents one of the main research strategies in the field of biomaterials. The present study reports on the development of composite membranes of Chitosan (CS)-Polyethylene glycol (PEG) matrix, incorporating particles of biphasic calcium phos...
Article
Full-text available
High-performance bioceramics are required for preventing failure and prolonging the life-time of bone grafting scaffolds and osseous implants. The proper identification and development of materials with extended functionalities addressing socio-economic needs and health problems constitute important and critical steps at the heart of clinical resea...
Article
Full-text available
Bone is a vascularized and connective tissue. The cortical bone is the main part responsible for the support and protection of the remaining systems and organs of the body. The trabecular spongy bone serves as the storage of ions and bone marrow. As a dynamic tissue, bone is in a constant remodelling process to adapt to the mechanical demands and t...
Article
Advances on the fabrication of sintering-free biphasic calcium phosphate (BCP)/natural polymer composite scaffolds using robocasting as additive manufacturing technique are presented in the present work. Inks with high amounts of BCP powders (45 vol%) containing different HA/β-TCP ratios, in presence of crosslinked polymer, were successfully fine-t...
Preprint
Full-text available
Bone is a dynamic tissue with the capacity of repair and regeneration in specific conditions. Nevertheless, due to the increased incidence of bone disorders, the need of bone grafts has been growing over the past decades and the development of an ideal bone graft with optimal properties remains a clinical challenge. This review addresses the bone p...
Article
Novel quaternary (67Si-24Ca-10Na-8P) glass powders were successfully synthesised by sol-gel followed by two alternative drying schedules, conventional drying (CD) and an innovative fast drying (FD) process (200 times quicker). The glasses were thermally stabilised at 550 °C, and then characterised by different complementary techniques. The samples...
Article
Aluminosilicate glasses are considered to follow the Al-Avoidance principle, which states that Al-O-Al linkages are energetically less favourable, such that, if there is a possibility for Si-O-Al linkages to occur in a glass composition, Al-O-Al linkages are not formed. The current paper shows that breaching of the Al-Avoidance principle is essenti...
Article
A quaternary bioactive sol-gel glass of high silica content was heat treated at different temperatures, and then wet ball milled under different balls to powder ratios. A total of sixteen experiments were performed to study in detail the effects of both experimental variables on the structure, morphology, particle size distributions and nitrogen ad...
Article
Full-text available
Sol-gel glasses in quaternary silica-sodium-calcium-phosphorous systems have been synthesised using a rotary evaporator for rapid drying without ageing. This novel fast drying method drastically decreases the total drying and ageing time from several weeks to only 1 hour, thus overcoming a serious drawback in sol-gel preparation procedures for biog...
Article
During the last decades, the nucleation and crystallization of the Li2O-SiO2 system has been widely investigated and its particular theoretical features disclosed. However, multicomponent lithium disilicate systems, being of higher technological interest, still require further studies aiming at better tailoring their relevant mechanical and chemica...
Article
Alpha-tricalcium phosphate (α-TCP) is a component of particular interest in the formulation of apatitic calcium phosphate based bone cements. During the setting reaction of this type of cements, a calcium deficient hydroxyapatite with composition similar to bone hydroxyapatite is formed. But the purity levels of the commercially available products...
Article
This work investigates the effects of the type and concentration of acid catalysts on the microstructural features of silica-rich bioactive glasses (75Si-16Ca-5Na-4P, in mol%) synthesised from acetate and nitrate precursor salts, using an innovative rapid sol-gel method, followed by thermal stabilisation at 550 °C. The results of XRD, SEM, FTIR and...
Article
Full-text available
A BaCO3/BaSnO3/SnO2 nanocomposite has been prepared using a co-precipitation method without adding any additives. The prepared sample was characterized by using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy, energy dispersive X-r...
Article
Biphasic calcium phosphate (BCP) scaffolds were successfully produced by robocasting. The BCP powder was prepared by hydrothermal synthesis (150 °C for 4 h) and calcined at 1000 °C. The as-obtained powder was milled to obtain a suitable particle size distribution (PSD) for optimizing the rheological properties of the suspensions and pastes prepared...
Article
The addition of resorbable β-tricalcium phosphate (β-TCP) to other bone substitute materials such as hydroxyapatite (HA) has been pointed out as a suitable strategy to enhance the regenerative potential of bone grafts made thereof. To check the generalization of this hypothesis, a new synthetic composite bone graft material consisting of a mixture...
Article
Full-text available
In this study, nanocrystalline ZnO–SnO2 mixed metal oxide powder was prepared by co-precipitation using Zn(CH3COO)2∙2H2O and SnCl4∙5H2O as precursor materials. The powder was characterized by X–ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy. Williamson–Hall method was used to evaluate the micro structural...