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Lee M, Kim T, Jang W, Lee S, So JP, Jang G, Choi S, Kim S, Bae J, Kim T, Park HG, Moon J, Soon A, Shim W. Nontypical Wulff-Shape Silicon Nanosheets with High Catalytic Activity. J Am Chem Soc 2023; 145:22620-22632. [PMID: 37799086 DOI: 10.1021/jacs.3c07768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Nanostructured silicon with an equilibrium shape has exhibited hydrogen evolution reaction activity mainly owing to its high surface area, which is distinct from that of bulk silicon. Such a Wulff shape of silicon favors low-surface-energy planes, resulting in silicon being an anisotropic and predictably faceted solid in which certain planes are favored, but this limits further improvement of the catalytic activity. Here, we introduce nanoporous silicon nanosheets that possess high-surface-energy crystal planes, leading to an unconventional Wulff shape that bolsters the catalytic activity. The high-index plane, uncommonly seen in the Wulff shape of bulk Si, has a band structure optimally aligned with the redox potential necessary for hydrogen generation, resulting in an apparent quantum yield (AQY) of 12.1% at a 400 nm wavelength. The enhanced light absorption in nanoporous silicon nanosheets also contributes to the high photocatalytic activity. Collectively, the strategy of making crystals with nontypical Wulff shapes can provide a route toward various classes of photocatalysts for hydrogen production.
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Affiliation(s)
- Minwoo Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Taehoon Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Woosun Jang
- Integrated Science and Engineering Division, Underwood International College, Yonsei University, Incheon 21983, Republic of Korea
| | - Sangseob Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jae-Pil So
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Gyumin Jang
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Sangjin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungsoon Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Jihong Bae
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Taeyoung Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Hong-Gyu Park
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Jooho Moon
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Aloysius Soon
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Wooyoung Shim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei IBS Institute, Yonsei University, Seoul 08826, Republic of Korea
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Ata AÇ, Yildiko Ü, Tanriverdi AA, Ebiri R, Yiğit E, Orak İ, Cakmak İ. Two‐step novel aromatic polyimide synthesis and characterization: Survey of energy calculations and diode applications. J Appl Polym Sci 2023. [DOI: 10.1002/app.53689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ahmet Çağrı Ata
- Institute of Science, Department of Chemistry Kafkas University Kars Turkey
| | - Ümit Yildiko
- Architecture and Engineering Faculty, Department of Bioengineering Kafkas University Kars Turkey
| | | | - Rüstem Ebiri
- Faculty of Sciences. Department of Chemistry Ataturk University Erzurum Turkey
| | - Evin Yiğit
- Department of Chemistry, Faculty of Sciences and Arts Bingol University Bingol Turkey
| | - İkram Orak
- Vocational School of Health Services Bingol University Bingol Turkey
- Renewable Energy Systems, Institute of Science Bingol University Bingol Turkey
| | - İsmail Cakmak
- Faculty of Arts and Sciences. Department of Chemistry Kafkas University Kars Turkey
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