Porous Titanate Ceramic Nanocomposite
Official patent title
PbTiO3/TiO2/Zn2Ti3O8 nanocomposite material and method of preparation thereof
Arabic title: مادة مركبة نانوية من PbTiO.SUB.3./TiO.SUB.2./Zn.SUB.2.Ti.SUB.3.O.SUB.8 وطريقة تحضيرها
Invention
Invention
Problem
Integrating lead titanate, titanium dioxide, and zinc titanate into a porous multiphase powder with controlled composition and particle properties is synthetically challenging.
Why it matters
Controlled ferroelectric and piezoelectric candidate materials may support sensors, actuators, and electronic components, provided their functional performance and lead-related safety are demonstrated.
Approach
The disclosure uses a sol-gel combustion route based on lead and zinc salts, titanium alkoxide, a polar protic solvent, and an amino-acid fuel. Drying and calcination yield a porous PbTiO3/TiO2/Zn2Ti3O8 nanocomposite with specified elemental ratios and particle characteristics.
Who may benefit
Potential beneficiaries include electronic-ceramic manufacturers, piezoelectric and ferroelectric researchers, sensor developers, materials-characterization laboratories, and specialty oxide producers.
Potential value
The route combines three titanate or oxide phases in a porous powder and specifies composition, morphology, and a reproducible solution-to-calcination sequence.
Background
Background
Ferroelectric and piezoelectric ceramics depend strongly on crystal phase, composition, grain size, and porosity. Combining lead titanate with titanium dioxide and zinc titanate may provide a multiphase platform, but controlling all phases through one synthesis is difficult. The publication defines a sol-gel combustion process and reports structural and morphological characteristics. The supplied record does not provide polarization, dielectric, piezoelectric coefficient, fatigue, or device data, and the presence of lead introduces handling, leaching, disposal, and regulatory considerations.
Technology overview
Technology overview
Lead and zinc ion sources are combined with a titanium alkoxide in a polar protic solvent, followed by an amino acid such as L-alanine to form a gel. Heating at about 200–400 °C dries or combusts the gel, and calcination at about 500–800 °C produces the multiphase powder. The disclosure specifies atomic ratios, crystallite size, median particle size, sphericity, and porosity, with XRD, SEM, and EDX used for laboratory characterization.
Potential applications
Potential applications
- Candidate ferroelectric ceramic components for laboratory evaluation.
- Candidate piezoelectric materials for sensor and actuator research.
- Multiphase titanate powders for electronic-material studies.
- Porous oxide nanocomposites for structure-property research.
Evidence-supported advantages
Evidence-supported advantages
- One route integrates lead, titanium, and zinc oxide phases.
- The process specifies gel formation, heating, and calcination windows.
- Composition, crystallite size, particle size, and porosity are defined.
- XRD, SEM, and EDX characterization are described.
Development stage
Development stage
Laboratory synthesis with XRD, SEM, and EDX characterization is described; functional ferroelectric or piezoelectric testing and lead-safety validation are not established.
Commercial opportunity
Commercial opportunity
The material may interest electronic-ceramic and sensor developers. Commercialization requires independent dielectric, ferroelectric, piezoelectric, fatigue, aging, and device benchmarking; reproducible scale-up; and robust lead exposure, leaching, recycling, and end-of-life controls. Functional application performance is not established by the supplied patent evidence.
Patent classifications
Patent classifications
WIPO IPC
- B01J35/00Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J21/06Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
CPC
- B01J35/651Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/08Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/33Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J21/063Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/70Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/51Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J37/036Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/40Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/393Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J23/06Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/19Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J35/45Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J23/14Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
Inventors
Inventors
- First inventorEhab Abdelhamed Abdelrahman Ahmed
Keywords
Keywords
- lead titanate
- titanium dioxide
- zinc titanate
- nanocomposite
- sol-gel combustion
- ferroelectric
- piezoelectric
- porous ceramic
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.