journal article·2025-06

Regulating COOH Intermediate via Rationally Constructed Surface‐Active Sites of Bi2WO6 for Solar‐Driven CO2‐to‐CO Production

Nguyen Quoc Thang, Amr Sabbah, Raghunath Putikam, Chih‐Yang Huang, Tsai‐Yu Lin, Mahmoud Kamal Hussien, Heng‐Liang Wu, Ming‐Chang Lin, Chih‐Hao Lee, Kuei‐Hsien Chen, Li‐Chyong Chen

Advanced Functional Materials· Volume 35· Issue 23
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Abstract

Abstract Solar‐driven CO2 reduction holds great promise for sustainable energy, yet the role of atomic active sites in governing intermediate formation and conversion remains poorly understood. Herein, a synergistic strategy using Ni single atoms (SAs) and surface oxygen vacancies (Ov) is reported to regulate the CO2 reduction pathway on the Bi2WO6 photocatalyst. Combining in‐situ techniques and theoretical modeling, the reaction mechanism and the structure‐activity relationship is elucidated. In‐situ X‐ray absorption spectroscopy identifies Bi and Ni as active sites, and in‐situ diffuse reflectance infrared Fourier transform spectroscopy demonstrates that adsorption of H2O and CO2 readily forms CO32− species on the Ov‐rich catalyst. Optimally balancing Ni SAs and Ov lowers the energy barrier for the formation and dehydration of a key COOH intermediate, leading to favorable CO formation and desorption. Consequently, a superior CO production efficiency of 53.49 µmol g‒1 is achieved, surpassing previous reports on Bi2WO6‐based catalysts for gas‐phase CO2 photoreduction.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · CO2 Reduction Techniques and Catalysts

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan

Center for Condensed Matter Sciences National Taiwan University Taipei 10617 Taiwan

Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan

Institute of Physics Academia Sinica Taipei 15201 Taiwan

Department of Engineering and System Science National Tsing Hua University Hsinchu 30013 Taiwan

Center of Atomic Initiative for New Materials National Taiwan University Taipei 10617 Taiwan

Tabbin Institute for Metallurgical Studies Tabbin Helwan 109 Cairo 11421 Egypt

Department of Applied Chemistry National Yang‐Ming Chiao Tung University Hsinchu 30010 Taiwan

International Graduate Program of Molecular Science and Technology National Taiwan University (NTU‐MST) Taipei 10617 Taiwan

Molecular Science and Technology Program Taiwan International Graduate Program (TIGP) Academia Sincia Taipei 11529 Taiwan

Department of Chemistry Faculty of Science Assiut University Assiut 71516 Egypt

Department of Chemistry National Taiwan University Taipei 10617 Taiwan

Department of Physics National Taiwan University Taipei 10617 Taiwan

Funding

National Taiwan University · National Science and Technology Council · Center of Atomic Initiative for New Materials, National Taiwan University · Academia Sinica · Ministry of Education

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