| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials
|
| Presentation Title |
High-performance Interfacial Water Evaporation of Black TiO2-x with High-Concentration Bulk Oxygen Vacancies |
| Author(s) |
Young-In LEE, Jongmin Byun, Hee Yeon Jeon |
| On-Site Speaker (Planned) |
Young-In LEE |
| Abstract Scope |
Interfacial water evaporation is the most sustainable, eco-friendly, and cost-effective method for clean water production from sewage and seawater. The photothermal material in the evaporation layer can directly convert sunlight, the sole energy input, into heat for evaporation. This study proposes an innovative synthesis method utilizing the ultrasonic spray pyrolysis (USP) process and synthesis mechanism to introduce high-concentration bulk oxygen vacancies to TiO2 nanoparticles. The black TiO2-x NPs exhibited a higher evaporation rate than carbon black, a typical carbonaceous photothermal material, due to the high-concentration bulk oxygen vacancies promoting photo-to-heat conversion. Furthermore, This method overcomes the unavoidable drawbacks of conventional synthesis methods, including surface-concentrated oxygen vacancies of the black TiO2-x. The present work provides useful insight into the defect engineering of metal oxide for high-performance photothermal materials. It points out a new direction for solar steam generation utilizing metal oxide. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Nanotechnology, Ceramics |