2018 Fiscal Year Annual Research Report
Near infrared plasmon-induced hole transfer in the heterostructured semiconductor nanocrystals
| Project/Area Number |
17J09073
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| Research Institution | Kyoto University |
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Principal Investigator |
廉 孜超 京都大学, 化学研究所, 特別研究員(PD)
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| Project Period (FY) |
2017-04-26 – 2019-03-31
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| Keywords | Hot hole transfer / LSPR / Near infrared light / Laser spectroscopy / Carrier dynamics / H2 evolution |
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| Outline of Annual Research Achievements |
The progress of this project has gone well with our expectation. Direct observation of near-infrared (NIR) light-induced plasmonic hot hole transfer was successfully made at a heterointerface in CdS/CuS heterostructured nanocrystals (HNCs). This part was published in the top journal (Z. Lian et al., Nature Commun. 2018, 9, 2314). The CdS/Cu7S4 HNCs with the morphology of heterodimers were successfully synthesized. They formed a novel plasmonic p-n junction, which overcame the ultrafast electron relaxation through hot electron injection and achieved extraordinarily long-lived charge separation (> 273 μs). The CdS/Cu7S4 HNCs exhibited high photocatalytic activity in hydrogen evolution under near- or short-wave infrared light irradiation. This part was published in the top journal (Z. Lian et al., J. Am. Chem. Soc. 2019, 141, 2446-2450). In addition, this article was selected as a Journal Cover Picture.
Next, durian-shaped CdS/ZnSe heterostructured semiconductor nanocrystals (d-CdS/ZnSe NCs) were successfully synthesized and the mechanism of formation processes were well explored. The d-CdS/ZnSe NCs exhibited high activity for H2 evolution due to the ultra-long lived charge separation (> 6.2 ms) and efficient hole transfer to the mesoporous shell. This part was published in a specific journal (Z. Lian et al., J. Phys. Chem. Lett. 2018, 9, 2212-2217).
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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[Journal Article] Durian-shaped CdS@ZnSe core@mesoporous-shell nanoparticles for efficient and sustainable photocatalytic hydrogen evolution2018
Author(s)
Zichao Lian, Masanori Sakamoto, Yoichi Kobayashi, Naoto Tamai, Jun Ma, Tsuneaki Sakurai, Shu Seki, Tatsuo Nakagawa, Mingwei Lai, Mitsutaka Haruta, Hiroki Kurata, Toshiharu Teranishi
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Journal Title
The Journal of Physical Chemistry Letters
Volume: 9
Pages: 2212-2217
DOI
Peer Reviewed / Int'l Joint Research
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