Formation of a p-n heterojunction photocatalyst by the interfacing of graphitic carbon nitride and delafossite CuGaO2
Benjamin Martinez
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
Search for more papers by this authorDai-Ning Chang
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
Search for more papers by this authorYu-Cheng Huang
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Department of Physics, Tamkang University, New Taipei City, Taiwan
Search for more papers by this authorChung-Li Dong
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Department of Physics, Tamkang University, New Taipei City, Taiwan
Search for more papers by this authorCorresponding Author
Te-Wei Chiu
Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Ming-Hsi Chiang
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Chun-Hong Kuo
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorBenjamin Martinez
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
Search for more papers by this authorDai-Ning Chang
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
Search for more papers by this authorYu-Cheng Huang
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Department of Physics, Tamkang University, New Taipei City, Taiwan
Search for more papers by this authorChung-Li Dong
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Department of Physics, Tamkang University, New Taipei City, Taiwan
Search for more papers by this authorCorresponding Author
Te-Wei Chiu
Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Ming-Hsi Chiang
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Chun-Hong Kuo
Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica and National Yang Ming Chiao Tung University, Taipei, Taiwan
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
National Synchrotron Radiation Research Center, Hsinchu, Taiwan
Correspondence
Te-Wei Chiu, Department of Materials and Mineral Resources Engineering, Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
Email: [email protected]
Ming-Hsi Chiang, Institute of Chemistry, Academia Sinica, Taipei 115201, Taiwan.
Email: [email protected]
Chun-Hong Kuo, Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Email: [email protected]
Search for more papers by this authorFunding information: Academia Sinica, Grant/Award Numbers: AS-SS-108-02, AS-iMATE-109-22; Ministry of Science and Technology, Taiwan, Grant/Award Numbers: 108-2628-M-A49-001-MY3, 110-2113-M-001-026-MY2, 110-2221-E-027-024; Executive Yuan, Taiwan
Abstract
Photocatalysts have focused on scientific endeavors for five decades already. Their ability to generate solar fuel via relatively environmentally benign processes brings promises of a future with increasingly sustainable energy production. A class of materials, heterojunction (HJ) semiconductors, have immense potential due to their versatility, stability, and cost-effectiveness. In addition, meticulous engineering of p-n HJ enables the apparition of an electric field at the junction, a supplementary driving force that drives the charge carriers to separate effectively upon illumination. Therefore, we combined n-type carbon nitride with p-type CuGaO2 to form a photo-active p-n HJ. Mechanistic insights being highly sought-after, we then employed X-ray photoelectron spectroscopy and X-ray absorption spectroscopy as complementary and orbital-specific techniques to probe the changes caused by interfacing CuGaO2 with g-C3N4.
CONFLICT OF INTEREST
The authors declare no competing financial interests.
Supporting Information
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| jccs202200083-sup-0001-supinfo.docxWord 2007 document , 6.7 MB | Appendix S1. The supporting information is available free of charge on the JCCS Publications website. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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