This patent presents a single-step, chemical-free method to fabricate titanium suboxides (TSO) by creating laser-induced oxygen vacancies on TiO2-doped polymer sheets using a CO2 infrared laser. The TSO formation is confirmed through XPS, XRD, and XAFS characterization techniques. The study explores the impact of laser settings, such as power and image density, on the reduction of TiO2 to TSO, offering a direct and efficient synthesis route for applications in electro-catalysis and photo-catalysis.
Type of IP
Faculty
Category of Patent
- Clean Water Access: Improves water purification, providing safer drinking water and reducing waterborne diseases.
- Environmental Protection: Enhances pollution control, contributing to a cleaner and healthier environment.
- Sustainable Energy: Boosts efficiency and durability of renewable energy systems
- Public Health: Facilitates virus inactivation and pollution reduction
This invention presents a method for fabricating titanium suboxide (TSO)-graphene composites by preparing TiO2-doped polymer sheets and using CO2 infrared laser irradiation to convert TiO2 into TSO and form graphene. The preparation involves dissolving Polyether Sulfone (PES) powder in dichloromethane (DCM), mixing with TiO2 powder, and controlling DCM evaporation to create sheets of approximately 120 ± 5 µm thickness. Laser irradiation is performed in the presence of air with specific laser settings (PPI of 140, 15% power, 25% speed, and image density of 6). This method produces TSO-graphene composite sheets, which can be utilized to create laser-induced TSO-graphene composite electrodes.
- Single-Step Process: Fabricates TSO-graphene composites in a single step, reducing complexity.
- Chemical-Free Method: Uses laser irradiation without the need for chemical reductants.
- Cost-Effective: Eliminates the need for high-temperature furnaces and multi-step processes.
- Rapid Fabrication: Achieves quick conversion of TiO2 to TSO with instantaneous photothermal heating.
6
Demonstration and/or validation in lab environment
Water Purification, Renewable Energy, Pollution Control, Electronics, Electrochemical Devices
- Water Purification: Electro-catalytic and photo-catalytic removal of organic dyes and viruses.
- Renewable Energy: Enhances solar cells and energy storage devices.
- Pollution Control: Catalysts for air and water purification.
- Electronics: Improves sensors, displays, and semiconductors. Electrochemical Devices: Produces high-conductivity electrodes for batteries and supercapacitors.