| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Advanced Ceramics for Environmental Remediation
|
| Presentation Title |
Photocatalysis and Photosensitization Using Atomically Precise Metal Nanoclusters for Solar Energy Harvesting and Conversion |
| Author(s) |
Nicola Pinna, Ye Liu, Yu Wang |
| On-Site Speaker (Planned) |
Nicola Pinna |
| Abstract Scope |
Metal nanoclusters (NCs) with atomic precision are a unique family of metal nanomaterials, representing ideal models to unravel structure-property relationship. In the first part of the talk, we demonstrate the differences of working principle between metal NCs and their particle counterparts. Metal NCs modified TiO2 catalyst is found to exhibit a fiver times higher performance than TiO2 modified with metal nanoparticles in H2 production. In the second part, we present the strategy to tune the charge transfer pathways of metal NCs sensitized semiconductors in photoelectrochemical system. While metal NCs serve as catalyst for oxidation reactions when loaded on n-type semiconductor, they serve as catalyst for reduction reactions when loaded on p-type semiconductor. In the last part, we will use Au25 NC as an example to demonstrate how the protecting ligand and the composition of the metal NC influence the overall performance of a NC/semiconductor system in photocatalytic H2 production. |