| Author: | Lin, Biyun |
| Title: | Engineering dual active metal sites on metal-organic frameworks for photocatalytic CO2 reduction |
| Advisors: | Lo, Benedict (ABCT) |
| Degree: | Ph.D. |
| Year: | 2026 |
| Department: | Department of Applied Biology and Chemical Technology |
| Pages: | vii, 241 pages : color illustrations |
| Language: | English |
| Abstract: | Photocatalytic CO₂ reduction (CO₂RR) presents a promising strategy for addressing the global challenges of CO₂ emissions and renewable energy utilization. Metal-organic frameworks (MOFs) have received extensive research attention for their applications in CO₂RR due to their superior CO₂ capture capabilities, photochemical properties, and structural tunability. In this thesis, we investigated the atomic-level engineering of the dual metal active sites on metal-organic frameworks to optimize photocatalytic CO₂RR performance. We systemically evaluated how dual-atom catalysts (DACs), metal loading density, and bimetallic combinations (electronic structure tuning) influence the selectivity and efficiency of CO₂ conversion, particularly towards high-value multi-carbon (C₂+) products. Combining experimental results with theoretical modeling, we established structure-activity relationships and developed rational design principles for optimizing MOF-based photocatalysts with tailored dual metal site. Advanced characterization techniques, including transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray absorption fine structure (XAFS) analysis, and photoluminescence (PL) were employed to probe the coordination environment and photoinduced charge transfer capability of catalysts. |
| Rights: | All rights reserved |
| Access: | open access |
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