April 7 - 11, 2025
Seattle, Washington
Symposium Supporters
2025 MRS Spring Meeting & Exhibit
CH01.12.22

Experimental and Theoretical Investigations into the Mechanism of Wireless CO2 Reduction over Defective g-C3N4 Photocatalysts

When and Where

Apr 10, 2025
5:00pm - 7:00pm
Summit, Level 2, Flex Hall C

Presenter(s)

Co-Author(s)

Mahmoud Hussien1,Amr Sabbah1,Raghunath Putikam2,Kuei-Hsien Chen3,Li-Chyong Chen1

National Taiwan University1,National Yang Ming Chiao Tung University2,Academia Sinica3

Abstract

Mahmoud Hussien1,Amr Sabbah1,Raghunath Putikam2,Kuei-Hsien Chen3,Li-Chyong Chen1

National Taiwan University1,National Yang Ming Chiao Tung University2,Academia Sinica3
The light-driven reduction of carbon dioxide holds promise for CO2 mitigation and the conversion of CO2 into valuable fuels and chemicals. While extensive efforts have been dedicated to elucidating the mechanistic aspects of photocatalytic CO2RR, the majority of reported studies have primarily focused on liquid-phase reactions using metal-based photocatalysts. In this investigation, we systematically explore the water-vapor assisted CO2RR employing a modified, metal-free g-C3N4-based photocatalyst without the incorporation of any cocatalyst, photosensitizer, or sacrificial reagent. Our approach utilizes In-Situ FTIR, DFT calculations, and operando XAS to deepen our understanding of the reaction mechanism. Furthermore, this study yields significant insights into the dynamics of charge carriers and the identification of active sites, thereby advancing our comprehension of the entire photocatalytic process.

Keywords

2D materials

Symposium Organizers

Kejie Zhao, Purdue University
Jungwon Park, Seoul National University
Luxi Li, Argonne National Laboratory
Yijin Liu, University of Texas at Austin

Session Chairs

Luxi Li
Yijin Liu

In this Session